研究者詳細 - 馬　廷麗

論文 - 馬　廷麗

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Cellulose-Based Hydrogel with Fast Ion Transport Kinetics Inducing Flat Grain-Stacking Plating for Aqueous Zinc Metal Batteries 査読有り国際誌

Guo Z., Shao C., Su Y., Chen L., Kang Q., Meng X., Jin C., Ma T., Fan M., Peng D., Yan L.

ACS Sustainable Chemistry and Engineering 13 ( 1 ) 386 - 395 2024年01月

記述言語：英語掲載種別：研究論文（学術雑誌）

Hydrogel electrolytes have distinguished themselves in aqueous zinc metal batteries due to their strong designability and diverse functions, especially in inducing even zinc deposition and inhibiting side reactions. While the high water content of hydrogel electrolytes can enhance Zn2+ ionic conductivity, it also tends to exacerbate undesirable water-related side reactions; thus, how to realize fast zinc ion transport kinetics under low water content remains a challenge. This work introduces carboxylated cellulose nanofibers with ample and diversified polar functional groups into cross-linking polyacrylamide networks to form hydrogel electrolytes. The strong hydrophilic groups of cellulose nanofibers, including carboxyl, hydroxyl, and inter/intramolecular ether bonds, not only grasp water molecules to facilitate desolvation of [Zn(H2O)6]2+ but also disperse the single-site binding energy to Zn2+ through multiple adjacent O atoms, effectively reconciling the conflicting demands of high Zn2+ ionic conductivity and low water content. Beyond their favorable mechanical properties, the as-prepared hydrogel electrolytes can induce flat grain-stacking zinc deposition, mitigate side reactions, and suppress polyiodide shuttling. Consequently, symmetric/asymmetric batteries and aqueous zinc-iodine batteries demonstrate much improved electrochemical performance. This work provides a reference for intricately designing hydrogel electrolytes for aqueous zinc metal batteries with specific functions by screening molecular structures of the components.

DOI： 10.1021/acssuschemeng.4c07677

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Exceeding 15% Performance with Energy Level Tuning in Tin-Based Perovskite Solar Cells 査読有り国際誌

Wang L., Bi H., Liu J., Wei Y., Zhang Z., Chen M., Baranwal A.K., Kapil G., Kitamura T., Yang S., Miao Q., Shen Q., Ma T., Hayase S.

ACS Energy Letters 6238 - 6244 2024年01月

記述言語：英語掲載種別：研究論文（学術雑誌）

Less-toxic tin-based perovskite materials have received more attention because they are a potential alternative to toxic Pb-based perovskite materials. However, the device performance of Sn-based perovskite solar cells is still far behind that of their Pb-based counterparts. In addition to easy oxidation of Sn2+ and fast crystallization, energy level mismatch is the other important factor inhibiting the improvement of device performance. In the study, we synthesized a new material, 5-mercapto-1-methyltetrazole tin salt, SnT2, as a regulator of the energy level of Sn-based perovskites. The results show that deeper valence bands and conduction bands were detected after SnT2 addition, which can give a better energy level alignment. Furthermore, the introduction of SnT2 also achieved the reduction of trap densities and enlargement of the grain size of perovskite films. Consequently, a 15.33% device performance was realized with an open-circuit voltage of 842.6 mV, short-circuit current density of 24.72 mA cm-2, and fill factor of 0.736.

DOI： 10.1021/acsenergylett.4c03172

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Prelithiated rigid polymer with high ionic conductivity as silicon-based anode binder for lithium-ion battery 査読有り国際誌

Zhang J., Sun J., Zhao Y., Su Y., Meng X., Yan L., Ma T.　中国計量大学

Journal of Colloid and Interface Science 649 977 - 985 2023年11月

担当区分：責任著者記述言語：英語掲載種別：研究論文（学術雑誌）

Silicon-based electrodes suffer from rapid performance degradation derived from a severe volume expansion during cycling in lithium-ion batteries, and using elaborately designed polymer binders is deemed an efficient tactic to tackle the above thorny issues. In this study, a water-soluble rigid-rod poly(2,2′-disulfonyl-4,4′-benzidine terephthalamide) (PBDT) polymer is described and employed as the binder for Si-based electrodes for the first time. The nematic rigid PBDT bundles wrapped around the Si nanoparticles by hydrogen bonding effectively inhibit the volume expansion of the Si and promote the formation of stable solid electrolyte interfaces (SEI). Moreover, the prelithiated PBDT binder with high ionic conductivity (3.2 × 10−4 S cm−1) not only improves the Li-ions transportation behaviors in the electrode but can also partially compensate for the irreversible Li source consumption during SEI formation. Consequently, the cycling stability and initial coulombic efficiency of the Si-based electrodes with the PBDT binder are remarkably enhanced compared to that with the PVDF binder. This work demonstrates the molecular structure and prelithiation strategy of the polymer binder that play a crucial role in improving the performance of Si-based electrodes with high-volume expansion.

DOI： 10.1016/j.jcis.2023.06.133

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Interfacial defect passivation by multiple-effect molecule for efficient and stable perovskite solar cells 査読有り国際誌

Ma C., Zhang C., Chen S., Ye Y., Sun L., Gao L., Sulaiman Y., Ma T., Chen M.　中国計量大学＆大連理工大学

Solar Energy Materials and Solar Cells 262 2023年10月

担当区分：責任著者記述言語：英語掲載種別：研究論文（学術雑誌）

Perovskite solar cells (PSCs) have attracted a lot of attention from researchers as the most promising photovoltaic devices due to their outstanding power conversion efficiency (PCE) and low-cost. Although the PSC have reached a PCE over 25%, the interface between the perovskite and hole transport layer (HTL) still is a crucial factor limiting higher PCE and long-term stability. In this work, we choose an organic molecule Bis(trifluoromethyl)benzo amide (BTFZA) to passivate defects at the perovskite/HTL interface. Owing to a strong interaction with uncoordinated Pb2+, the BTFZA effectively passivated the surface defects, remarkably promoted carrier transportation. As a result, the perovskite device based on BTFZA surface modification showed a PCE increase of 16.4% over the control device. Especially, the fill factor (FF) and the open-circuit voltage (VOC) of the modified device increased significantly. In addition, the unencapsulated BTFZA-modified device maintains better PCE compared to the control device after aging for over 600 h in ambient air with extreme humidity and temperature conditions. Results suggested that the introduction of BTFZA is an effective way to regulate the surface of perovskite film aiming at highly efficient and stable perovskite solar cells.

DOI： 10.1016/j.solmat.2023.112499

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Three birds, one-stone strategy for synthesis of hierarchically arrayed defective MnCo<inf>2</inf>O<inf>4</inf>@NF catalyst for photothermal preferential oxidation of CO in H<inf>2</inf>-rich streams 査読有り国際誌

Zhou A., Guo X., Zhong S., Chen Z., Kang Q., Chen M., Jin D., Fan M., Zhou R., Ma T.　中国計量大学

Chemical Engineering Journal 471 2023年09月

担当区分：責任著者記述言語：英語掲載種別：研究論文（学術雑誌）

A novel strategy with the “three birds, one stone” effect has been proposed to enhance the catalytic performance of cobalt manganese spinel catalysts for photothermal CO-PROX in H2 streams. The approach involves fabricating hierarchically arrayed defective MnCo2O4@ Nickel foam (NF) through a simple hydrothermal post-treatment and partial recrystallization process. Three synergetic effects were induced by the hydrothermal posttreatment of MnCo2O4: (i) the creation of a hierarchically arrayed morphology that strengthens light absorption and photo-to-thermal conversion, supported by finite-element method (FEM) simulations; (ii) the increased vacancy structures to alleviate significant electron-hole recombination; and (iii) abundant oxygen vacancy to facilitate oxygen adsorption and activation. These effects result in the unique hierarchically arrayed morphology and superior structural properties of MnCo2O4 spinel, which significantly enhances the photothermal synergism and catalytic activity of MnCo2O4@NF in photothermal CO-PROX driven by simulated solar light. This work provides a simple and facile strategy for developing hierarchical and defective MnCo2O4 spinel photothermal materials.

DOI： 10.1016/j.cej.2023.144835

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Sn Perovskite Solar Cells with Tin Oxide Nanoparticle Layer as Hole Transport Layer 査読有り国際誌

Kitamura T., Wang L., Zhang Z., Baranwal A.K., Kapil G., Sahamir S.R., Sanehira Y., Bi H., Ma T., Shen Q., Hayase S.

ACS Energy Letters 8 ( 8 ) 3565 - 3568 2023年08月

記述言語：英語掲載種別：研究論文（学術雑誌）

Tin perovskite solar cells (Sn-PVK-PVs) are a promising alternative to lead perovskite solar cells (Pb-PVK-PVs). Poly (3,4-ethylenedioxythiophene) polystyrene sulphonic acid (PEDOT:PSS) is employed as the hole transport layer (HTL). However, the matter of concern is the damage of the Sn-PVK layer by the acidic properties of the PEDOT:PSS. Therefore, PEDOT:PSS-free Sn-PVK-PV is eagerly awaited. In this paper, the inorganic hole collectors using commercially available SnO2 nanoparticles (Nano SnO2) are reported. It is well-known that Nano SnO2 works as an electron transport layer for Pb-PVK-PVs. However, we found that the Nano SnO2 surface was reduced to SnOx (x < 2) nanoparticles (abbreviated as P-Nano SnOx) when the Nano SnO2 contacted with the Sn-PVK layer, and the resulting P-Nano SnOx works effectively as the HTL of the Sn-PVK-PVs. The efficiency of 9.77% is reported. Furthermore, P-Nano SnOx devices showed higher stability in comparison to PEDOT:PSS devices.

DOI： 10.1021/acsenergylett.3c01448

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3D homogeneous porous copper-ceria catalyst for solar light driven photothermal CO-PROX in H<inf>2</inf>-rich gas: Enhanced light absorption and abundant oxygen vacancy 査読有り国際誌

Guo X., Zhong S., Ye W., Zhou A., Chen Z., Jin D., Kang Q., Fan M., Ma T.　中国計量大学

Molecular Catalysis 547 2023年08月

担当区分：責任著者記述言語：英語掲載種別：研究論文（学術雑誌）

Photothermal preferential oxidation of CO (CO-PROX) on copper-ceria catalyst has emerged as an efficient and energy-saving approach for trace CO purification in hydrogen-rich gas. However, the limited light absorption and photo-to-thermal conversion capability of the copper-ceria catalyst hinder its catalytic performance for photothermal CO-PROX. In this study, a three-dimensional homogeneous porous copper-ceria catalyst (3DHP) was developed by using ordered SiO2 microspheres as the hard template. Compared to 3DIP catalyst with disordered silica colloid as the template, the uniform 3D pore structure, smaller particle size and abundant oxygen vacancy in 3DHP remarkably promote its photothermal catalytic performance for CO-PROX driven by the simulated solar light. The uniform 3D pore structure of 3DHP catalyst greatly strengthens the light absorption and photo-to-thermal conversion ability due to the slow photon effect of photonic crystals, which obtained higher surface temperature under the light irradiation. The higher specific surface area contributed to the high dispersion of copper species on 3DHP catalyst. Additionally, the more abundant oxygen vacancy facilitated the activation of O2 and the efficient electron-hole separation in 3DHP catalyst. Moreover, the visible light contributes to the largest portion of the total CO conversion due to the strong absorption ability of 3DHP in this range.

DOI： 10.1016/j.mcat.2023.113416

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Robust lamellar Fe<inf>2</inf>O<inf>3</inf>@SnO<inf>2</inf> heterostructure for long cycling and high-rate lithium storage 査読有り国際誌

Lu Y., Wang X., Kang Q., Wang X., Wang R., Yan L., Meng X., Chang F., Gao F., Chen M., Ma T.　中国計量大学

Colloids and Surfaces A: Physicochemical and Engineering Aspects 669 2023年07月

担当区分：責任著者記述言語：英語掲載種別：研究論文（学術雑誌）

Transition metal oxides (TMOs) have attracted great attention for lithium-ion batteries (LIBs) owing to their high theoretical capacity. Unfortunately, the painful volume expansion and inferior electrical conductivity of TMOs lead to nonreversing structural deterioration, disordered particle agglomeration and sluggish transfer efficiency, which results in low rate performance and poor cycling stability. This work reports a kind of lamellar Fe2O3 @SnO2 heterostructure composite for LIBs by the means of uniform epitaxial growth of the SnO2 nanorods on the lamellar Fe2O3. Due to the “synergistic effect” advantage of the unique heterostructure and two kinds of composition, the lamellar Fe2O3 @SnO2 heterostructure delivers a prominent and impressive capacity (1572.7 mA h∙g−1 at 4 A∙g−1), good rate performance (993.7 mA h∙g−1 at 5 A∙g−1) and stable long-cycle durability (848.4 mA h∙g−1 after 4000 cycles at 4 A∙g−1). The finite element mechanical simulation demonstrates that the stress is concentrated at the gap of SnO2 nanorods by epitaxial growth from the lamellar Fe2O3, the junction of SnO2 nanorods and the lamellar Fe2O3 is safeguarded. Hence, the lamellar Fe2O3 @SnO2 heterostructure has good rate performance in addition to being stable over a long cycling process. Therefore, the present work provides an outstanding method to improve the energy storage performance of metal oxide composites and other types of nanocomposites.

DOI： 10.1016/j.colsurfa.2023.131481

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All-organic aqueous batteries consisting of quinone-hydroquinone derivatives with proton/aluminum-ion co-insertion mechanism 査読有り国際誌

Su Y., Jiang H., Kang Q., Meng X., Zheng X., Lu J., Mei X., Sun X., Yan L., Ma T.　中国計量大学

Applied Surface Science 625 2023年07月

担当区分：責任著者記述言語：英語掲載種別：研究論文（学術雑誌）

All-organic aqueous batteries are deemed attractive energy storage systems for some application scenarios demanding recyclability or wearability. The efficient redox activity of quinone/hydroquinone-derived couples in biosystems inspires us to develop advanced batteries based on them. However, designing such an all-organic aqueous battery is challenging in selecting suitable electrolytes and active materials. A possible battery configuration consisting of the 9, 10-anthraquinone (AQ) anode, hydroquinone derivatives cathode, and weak acid metal-ion aqueous electrolyte is demonstrated herein. The molecular configuration of quinones and ionic type of electrolytes affect the redox behaviors of electrodes. Gratifyingly, a combination of AQ-tetrachlorohydroquinone-Al2(SO4)3 exhibits optimal performance. The underlying work mechanism of this full-battery configuration is disclosed by electrochemical and structural characterizations, finding that H+ and Al3+ are jointly involved in the redox reaction of quinone electrodes, and Al3+ plays a crucial role. This work inaugurates a new framework for designing an all-organic aqueous battery.

DOI： 10.1016/j.apsusc.2023.157174

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A simple approach to synthesize NiFe-LDH-Nb<inf>2</inf>C MXene for enhanced electrochemical nitrogen reduction reactions by a synergistic effect 査読有り国際誌

Hua Q., Zhu H., Xue S., Zhao F., Liang Z., Ren X., Gao L., Ma T., Liu A.　大連理工大学

Catalysis Science and Technology 13 ( 15 ) 4558 - 4567 2023年07月

記述言語：英語掲載種別：研究論文（学術雑誌）

The main process for industrial ammonia synthesis is the Haber-Bosch process, which is highly energy intensive with large amounts of CO2. The electrochemical ammonia synthesis is a potential alternative to the Haber-Bosch process because of its advantages of environmental friendliness; however, the inert N2 molecule adsorption and activation are difficult and the competition of the hydrogen evolution reaction (HER) leads to a low Faraday efficiency (FE) and NH3 yield of the nitrogen reduction reaction (NRR). The exploration of highly active and selective NRR catalysts that can efficiently adsorb and activate N2, as well as effectively inhibit the HER, is the key point of current research. In this study, NiFe-Nb2C catalysts were prepared by loading different Ni/Fe molar ratios of NiFe-LDH to Nb2C MXene and successfully introducing the synergistic effect between Ni and Fe. NiFe-Nb2C exhibited excellent NRR activity and the ammonia yield and FE hardly decreased in 4 consecutive cycle tests, and the current density remained stable in 24 h chronoamperometric tests, indicating that the NiFe-Nb2C catalyst has excellent electrochemical stability. DFT calculations indicate that the excellent NRR activity originated from the synergistic effect between NiFe-LDH and Nb2C MXene, which significantly promoted the activation of N2 and the formation of *N2H.

DOI： 10.1039/d3cy00736g

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Application of Transition Metal Doping in Perovskite Photovoltaic Devices 査読有り

Zou W., Zhang C., Jiang H., Gao L., Fan M., Ma T.　中国計量大学＆大連理工大学

Laser and Optoelectronics Progress 60 ( 9 ) 2023年05月

担当区分：責任著者記述言語：中国語掲載種別：研究論文（学術雑誌）

Perovskite solar cells have been rapidly developed in recent years. As of 2022, solar cells based on perovskites have achieved a photoconversion efficiency of 25. 7%, showing great potential in the field of photovoltaic devices. Despite their high conversion efficiency, the thermal and humidity stability of perovskite solar cells are still considered major barriers to their development. Metal ion doping has proven to be one of the most effective ways to improve the optoelectrical performance and stability of perovskite solar cells. Among the ions introduced, transition metals have been favored by researchers because of their unique properties such as multivalency. In this paper, the latest advancements of doped perovskite photovoltaic devices with transition metal ions are briefly reviewed, and the methods and strategies of doping against the electron transport layer, perovskite active layer, hole transport layer, and metal electrode layer are summarized. The law and mechanism of such methods used to optimize the structure, photoelectric performance, and stability of perovskite photovoltaic devices are discussed.

DOI： 10.3788/LOP220620

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Construction of Cu-doped Co<inf>3</inf>O<inf>4</inf>/rGO composites with a typical buffer structure for high-performance lithium storage 査読有り国際誌

Wang X., Wang R., Kang Q., Yan L., Ma T., Li D., Xu Y., Ge H.　中国計量大学

Colloids and Surfaces A: Physicochemical and Engineering Aspects 656 2023年01月

記述言語：英語掲載種別：研究論文（学術雑誌）

Transition metal oxides (TMOs) are considered to be an ideal anode material for the high performance lithium-ion batteries (LIBs). However, their inferior conductivity of electrons and ions, in addition violently volume change enable the significant capacity plunge. Here, the TMOs nanoparticles were encapsulated in a reduced graphene oxide (rGO) by an easy grinding strategy to solve the above problems. The rGO encapsulated Cu-doped Co3O4 (CCO) composite electrode was fabricated by combining a handy sol-gel and grinding way. As anode material of LIBs, the CCO/rGO composites are provided with favorable specific capacity (2093 mAh g−1 at 4 A g−1), superior rate capability (1949 mAh g−1 at 5.0 A g−1) and good cycling stability. The flexible rGO enables the excellent lithium storage performance, which effectively prevents the nanoparticles aggregating to provide more storage lithium active sites. The structure of nanoparticles is preserved during the cycling process to enhance the conductivity. In this paper, a universal and efficient method is accomplished, which builds an original dual metal oxide wrapped in rGO applied to energy storage.

DOI： 10.1016/j.colsurfa.2022.130325

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14.31 % Power Conversion Efficiency of Sn-Based Perovskite Solar Cells via Efficient Reduction of Sn<sup>4+</sup> 査読有り国際誌

Wang L., Miao Q., Wang D., Chen M., Bi H., Liu J., Baranwal A.K., Kapil G., Sanehira Y., Kitamura T., Ma T., Zhang Z., Shen Q., Hayase S.

Angewandte Chemie - International Edition 2023年01月

記述言語：英語掲載種別：研究論文（学術雑誌）

The photoelectric properties of nontoxic Sn-based perovskite make it a promising alternative to toxic Pb-based perovskite. It has superior photovoltaic performance in comparison to other Pb-free counterparts. The facile oxidation of Sn2+ to Sn4+ presents a notable obstacle in the advancement of perovskite solar cells that utilize Sn, as it adversely affects their stability and performance. The study revealed the presence of a Sn4+ concentration on both the upper and lower surfaces of the perovskite layer. This discovery led to the adoption of a bi-interface optimization approach. A thin layer of Sn metal was inserted at the two surfaces of the perovskite layer. The implementation of this intervention yielded a significant decrease in the levels of Sn4+ and trap densities. The power conversion efficiency of the device was achieved at 14.31 % through the optimization of carrier transportation. The device exhibited operational and long-term stability.

DOI： 10.1002/anie.202307228

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MIL-101(Fe)@Nb<inf>2</inf>C MXene for efficient electrocatalytic ammonia production: an experimental and theoretical study 査読有り国際誌

Zhu H., Xue S., Zhao F., Hua Q., Liang Z., Ren X., Gao L., Ma T., Liu A.　大連理工大学

New Journal of Chemistry 47 ( 32 ) 15302 - 15308 2023年01月

記述言語：英語掲載種別：研究論文（学術雑誌）

The environment-friendly electrochemical nitrogen reduction reaction (NRR) is considered to be a promising alternative to the traditional Haber-Bosch process for ammonia production. However, the stability of nitrogen and competitive hydrogen evolution reaction (HER) lead to low faradaic efficiency (FE) and ammonia selectivity for the NRR. Compared with the NRR, the electrochemical nitrate reduction reaction (NO3RR), with no process of N2 adsorption, exhibits a higher NH3 yield and FE. In this work, the MIL-101(Fe) is synthesized and composited with Nb2C MXene, which exhibited excellent NRR and NO3RR performance. For the NRR, the MIL-101(Fe)@Nb2C achieved an ammonia yield of 8.92 μg h−1 cm−2 and a high FE of 20.77%. Meanwhile, for the NO3RR, it achieved a large NH3 yield of 199.68 μg h−1 cm−2 and a high FE of 89.9%. In addition, MIL-101(Fe)@Nb2C exhibits excellent stability for the NRR and NO3RR. DFT calculations proved that the interfacial interaction between Nb2C and MIL-101(Fe) acquired a significant synergistic mechanism to improve the catalytic performance. Since the NH3 yield and FE of the NO3RR are much higher than those of the NRR, it is vital to design NRR catalysts that can easily adsorb and activate nitrogen as well as inhibit the HER.

DOI： 10.1039/d3nj02436a

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Ultralow-Temperature SnO<inf>2</inf> Electron Transport Layers Fabricated by Intermediate-Controlled Chemical Bath Deposition for Highly Efficient Perovskite Solar Cells 査読有り国際誌

Gao L., He Z., Zeng K., Liu A., Jiang F., Ma T.　大連理工大学

ChemSusChem 2023年01月

担当区分：最終著者記述言語：英語掲載種別：研究論文（学術雑誌）

As electron transport layers (ETLs) in perovskite solar cells (PSCs), tin oxide (SnO2) possess high carrier mobilities with appropriate energy band alignment and high optical transmittance. Herein, SnO2 ETLs were fabricated by intermediate-controlled chemical bath deposition (IC-CBD) at ultralow temperature, where the chelating agent effectively altered the nucleation and growth process. Compared with conventional CBD, SnO2 ETLs fabricated by IC-CBD had lower defects, smooth surface, good crystallinity, and remarkable interfacial contact with perovskite, resulting in good quality of perovskite, high photovoltaic performance (23.17 %), and enhanced stability of devices.

DOI： 10.1002/cssc.202300765

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Interfacial Energy Level Alignment and Defect Passivation by Using a Multifunctional Molecular for Efficient and Stable Perovskite Solar Cells 査読有り国際誌

Ye Y.C., Chen L., Chen X.M., Ma C.Y., Lv B.H., Wang J.Y., Dou W.D., Zhang C., Ma T.L., Tang J.X.　中国計量大学

Advanced Functional Materials 2023年01月

担当区分：責任著者記述言語：英語掲載種別：研究論文（学術雑誌）

Tin oxide (SnO2) is currently the dominating electron transport material (ETL) used in state-of-the-art perovskite solar cells (PSCs). However, there are amounts of defects distributed at the interface between ETL and perovskite to deteriorate PSC performance. Herein, a molecule bridging layer is built by incorporating 2,5-dichloroterephthalic acid (DCTPA) into the interface between the SnO2 and perovskites to achieve better energy level alignment and superior interfacial contact. The multifunctional molecular bridging layer not only can passivate the trap states of Sn dangling bonds and oxygen vacancies resulting in improved conductivity and the electron extraction of SnO2 but also can regulate the perovskite crystal growth and reduce defect-assisted nonradiative recombination due to its strong interaction with undercoordinated lead ions. As a result, the DCTPA-modified PSCs achieve champion power conversion efficiencies (PCEs) of 23.25% and 20.23% for an active area of 0.15 cm2 device and 17.52 cm2 mini-module, respectively. Moreover, the perovskite films and PSCs based on DCTPA modification show excellent long-term stability. The unencapsulated target device can maintain over 90% of the initial PCE after 1000 h under ambient air. This strategy guides design methods of molecule bridging layer at the interface between SnO2 and perovskite to improve the performance of PSCs.

DOI： 10.1002/adfm.202310136

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Preparation of Ru-doped Cu-based catalysts for enhanced electrochemical ammonia synthesis from efficient electrocatalytic nitrate reduction 査読有り国際誌

Liu A., Li G., Cao J., Zhao F., Chen X., Hua Q., Gao L., Ma T., Ren X.　大連理工大学

Catalysis Science and Technology 2023年01月

記述言語：英語掲載種別：研究論文（学術雑誌）

Ammonia (NH3) is not only an essential feedstock for fertilizer, but also deemed as a potential hydrogen carrier. Worldwide industrial-scale NH3 synthesis relies heavily on the Haber-Bosch process, which involves harsh operation under reaction conditions. In addition, nitrate is prevalent in groundwater and surface water, causing serious pollution. Electrocatalytic nitrate reduction reaction (NITRR), a sustainable ammonia synthesis technique, is the most promising alternative to the traditional Haber-Bosch process. We combined the noble metal Ru by impregnation based on Cu-based materials that can inhibit the HER to prepare Cu/Cu2O/RuO2@C composites. Surprisingly, the NH3 yield of Cu/Cu2O/RuO2@C composites prepared by the NITRR reached 209.44 μmol cm−2 h−1 and 82.40% Faraday efficiency at −0.6 V (vs. RHE). Such a high reduction activity is attributed to the synergistic effect between Ru heteroatoms and the Cu-based material. In addition, Cu/Cu2O/RuO2@C exhibited good cycling stability and repeatability. This work highlights the potential importance of electrocatalyst design, contributing to research and exploration of related materials.

DOI： 10.1039/d3cy01072d

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Versatile nicotinamide enabling dendrite-free and efficient deposition for aqueous Zn-I<inf>2</inf> batteries 査読有り国際誌

Wang H., Su Y., Yan L., Zeng X., Chen X., Xiang B., Ren H., Ma T., Ling M.　中国計量大学

Chemical Communications 2023年01月

記述言語：英語掲載種別：研究論文（学術雑誌）

This study introduces a versatile electrolyte additive, nicotinamide, for zinc anodes, aiming to facilitate uniform deposition and suppress water-induced side reactions. The molecular structure, consisting of a pyridine ring and an amide function group, endows NTA molecules with the ability to regulate electrolyte pH, enhance nucleation overpotential, and constrain 2D diffusion of Zn2+. As a result, the full battery configuration with this additive achieved an impressive lifespan of over 10 000 cycles.

DOI： 10.1039/d3cc03420h

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Fundamentals and Recent Progress in Magnetic Field Assisted CO<inf>2</inf> Capture and Conversion 査読有り国際誌

Zhong S., Guo X., Zhou A., Chen Z., Jin D., Fan M., Ma T.　中国計量大学

Small 20 ( 5 ) 2023年01月

担当区分：最終著者記述言語：英語掲載種別：記事・総説・解説・論説等（学術雑誌）

CO2 capture and conversion technology are highly promising technologies that definitely play a part in the journey towards carbon neutrality. Releasing CO2 by mild stimulation and the development of high efficiency catalytic processes are urgently needed. The magnetic field, as a thermodynamic parameter independent of temperature and pressure, is vital in the enhancement of CO2 capture and conversion process. In this review, the recent progress of magnetic field-enhanced CO2 capture and conversion is comprehensively summarized. The theoretical fundamentals of magnetic field on CO2 adsorption, release and catalytic reduction process are discussed, including the magnetothermal, magnetohydrodynamic, spin selection, Lorentz forces, magnetoresistance and spin relaxation effects. Additionally, a thorough review of the current progress of the enhancement strategies of magnetic field coupled with a variety of fields (including thermal, electricity, and light) is summarized in the aspect of CO2 related process. Finally, the challenges and prospects associated with the utilization of magnetic field-assisted techniques in the construction of CO2 capture and conversion systems are proposed. This review offers a reference value for the future design of catalysts, mechanistic investigations, and practical implementation for magnetic field enhanced CO2 capture and conversion.

DOI： 10.1002/smll.202305533

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Highly Ion-Conducting Protective Layers with Nanomicro Engineering for High-Performance Lithium Metal Anodes 査読有り国際誌

You J., Hu Y., Han X., Deng L., Zheng X., Wu Q., Ma T.　中国計量大学

ACS Sustainable Chemistry and Engineering 2023年01月

担当区分：最終著者記述言語：英語掲載種別：研究論文（学術雑誌）

The utilization of the lithium (Li) metal as an anode material has generated significant interest in the development of next-generation Li rechargeable batteries. However, the occurrence of heterogeneous Li plating/stripping during cycling often leads to the formation of Li dendrites, which severely limits their further application. In this study, we report the successful fabrication of a nanomicro structure protective layer composed of core-shell-like Li2Sn5@LiCl particles, achieved through a simple replacement reaction of Li and SnCl4, followed by spontaneous alloying reactions. The protective layer has a core-shell structure, consisting of electron-conducting Li2Sn5 covered by ion-conducting LiCl layers, serving as a Li+ transport network and enabling fast Li+ diffusion to achieve a uniform deposition of Li. As a result, a dendrite-free Li metal anode is obtained, leading to greatly improved cycling stability. Remarkably, symmetrical cells employing treated Li electrodes with an optimized thickness of the protective layer (designated as Li@SL-30) exhibit stable cycling for more than 100 h at a current density of 3 mA cm-2 in a carbonate-based electrolyte. In contrast, symmetric cells employing bare Li electrodes display oscillated voltage after only 15 h of cycling. Furthermore, full cells utilizing Li@SL-30 anodes paired with lithium cobalt oxide (LCO) cathodes (≈15 mg cm-2) demonstrate superior cycling performance over 140 cycles with a high capacity retention of 96.4% at 0.2 C, indicating only 0.0257% capacity loss per cycle. Conversely, full cells employing bare Li anodes exhibit capacity retention of only 88.9% after 100 cycles, dropping to 132.5 mA h g-2. These results demonstrate the feasibility of this approach for the development of high-performance Li metal batteries.

DOI： 10.1021/acssuschemeng.3c03017

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