研究者詳細 - 馬　廷麗

論文 - 馬　廷麗

分割表示453 件中 101 - 120 件目／全件表示 >>

Two-Dimensional MXene Supported Bismuth for Efficient Electrocatalytic Nitrogen Reduction 査読有り国際誌

Liu A., Liang X., Zhu H., Ren X., Gao L., Gao M., Yang Y., Li G., Ma T.

ChemCatChem 14 ( 7 ) 2022年01月

記述言語：英語掲載種別：研究論文（学術雑誌）

Electrochemical nitrogen reduction reaction (NRR), as a green and sustainable ammonia (NH3) synthesis process, is considered to be the most promising alternative to the traditional Haber-Bosch method for NH3 synthesis. However, this process requires a highly active electrocatalyst to overcome the problems of low NRR activity and selectivity. Herein, we deposited metallic bismuth nanoparticles on two-dimensional Ti3C2 MXene nanosheets by a simple liquid phase reduction method to synthesize Bi@Ti3C2 nanocomposites. This composite material is a promising electrocatalyst for environmental electrocatalytic N2 fixation to NH3. Unexpectedly, the Bi@Ti3C2 composite obtains an excellent NH3 yield and Faraday efficiency as high as 28.3 μg h−1 cm−2 and 27.2 % at −0.4 V versus reversible hydrogen electrode (RHE) in 0.1 M KOH. The high NRR activity can be attributed to the unique N-philic and H-phobic characteristics of Bi atoms and the outstanding electronic conductivity of MXene. Moreover, the Bi@Ti3C2 composite catalyst also exhibited good cycling stability and durability of up to 24 h. This work highlights the potential importance of material design and will also expand the research and exploration of high-efficiency NRR electrocatalysts.

DOI： 10.1002/cctc.202101683

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Self-assembly synthesis of Ni-decorated Nb<inf>2</inf>C MXene as an efficient and stable catalyst towards electrochemical nitrogen reduction 査読有り国際誌

Zhu H., Xue S., Liang Z., Liang X., Li G., Ren X., Gao L., Li Q., Ma T., Liu A.

Ceramics International 2022年01月

記述言語：英語掲載種別：研究論文（学術雑誌）

Electrochemical nitrogen reduction reaction (NRR) is widely regarded as a green and environmentally sustainable strategy with the promise for industrial-scale ammonia synthesis under ambient conditions. To promote its industrialization, we synthesized an economical, efficient and stable Ni-decorated Nb2C (Ni@Nb2C) MXene-based catalyst. The Ni@Nb2C MXene displays excellent electrocatalytic NRR performance with NH3 yield of 26.16 μg cm−2 h−1 and Faradaic efficiency of 7.3%. Remarkably, the general methodology reported here paves the way to effectively synthesize various other metals-decorated MXenes, which not only enrich the MXene-based catalysts but also significantly promote their practical utilization in a wide range of environment- and energy-related fields. It is of great significance for the harmonious development of humans and nature.

DOI： 10.1016/j.ceramint.2022.04.027

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Perovskite Solar Cells in Space: Evaluation of Perovskite Solar Cell Hole Transport Material in Space Environment 査読有り国際誌

BAUTISTA Izrael Zenar C., YANG Shuzhang, KUYYAKANONT Aekjira, IWATA Minoru, MA Tingli, CHO Mengu

TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES ( 一般社団法人日本航空宇宙学会 ) 65 ( 2 ) 95 - 107 2022年01月

Interface Engineering and Anion Engineering of Mo-Based Heterogeneous Electrocatalysts for Hydrogen Evolution Reaction 査読有り国際誌

Yin Z., Liu X., Chen S., Ma T., Li Y.

Energy and Environmental Materials 2022年01月

記述言語：英語掲載種別：研究論文（学術雑誌）

Development and utilization of hydrogen energy is an effective way to achieve carbon neutrality, only hydrogen production through electrolytic water splitting meets the goal of zero carbon emission. To facilitate the large-scale commercialization of water splitting devices, the development of highly efficient and low-cost catalysts to reduce the energy consumption is essential. MoS2 has been regarded as a promising electrocatalyst to replace platinum in hydrogen evolution reaction due to its low price and unique 2D layered structure. However, the poor conductivity and inert basal planes of MoS2 limited its wide-spread application. Recently, researches have demonstrated that the conductivity and active sites of MoS2 can be improved by heteroatoms doping or constructing of heterogeneous structures. In this review, the recent progress of Mo-based catalysts are summarized centered on MoS2 based on interface engineering and anion engineering, including MoS2–MoO2, MoS2–Mo2C, MoS2–MoNx, MoS2–MoP, and MoS2–MoSe2. The preparation method, structure, and performance of the catalysts are introduced and the possible mechanism behind the improved catalytic activity are revealed to give readers an overall comprehension on the progress of the Mo-based electrocatalysts for hydrogen evolution reaction. In addition, an outlook on future opportunities and development directions of Mo-based catalysts are proposed to facilitate the development of Mo-based catalysts for hydrogen production.

DOI： 10.1002/eem2.12310

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Sulfur contributes to stable and efficient carbon-based perovskite solar cells 査読有り

Liu C., He Z., Li Y., Liu A., Cai R., Gao L., Ma T.

Journal of Colloid and Interface Science 605 54 - 59 2022年01月

記述言語：英語掲載種別：研究論文（学術雑誌）

The power conversion efficiency (PCE) of perovskite solar cells (PSCs) is already higher than those of other thin-film photovoltaic technologies, but the stability issue limits their applications. The introduction of sulfur-based compounds in PSCs could contribute to their stability. Herein, sulfur-based compounds have been embedded into each functional layer to stabilize carbon-based PSCs (C-PSCs). Results showed that the simultaneous introduction of sulfur-based compounds could decrease the trap states of perovskite film, enlarge the grain size of perovskite, and accelerate the charge transfer and extraction, leading to an improved performance. Comparing with the device without sulfide (10.77%), all sulfide C-PSCs obtained a PCE of 15.38%. The stability test showed much better resistance to humidity and thermal stress for all sulfide C-PSCs. They could retain 80% of initial PCE after aging about 700 h at relative humidity (RH) 45% ± 10% and 80 °C.

DOI： 10.1016/j.jcis.2021.07.058

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In situ growth of a bifunctional modification material for highly efficient electron-transport-layer-free perovskite solar cells 査読有り国際誌

Gao L., Xu C., He Z., Su Y., Ma T.

New Journal of Chemistry 46 ( 26 ) 12767 - 12772 2022年01月

担当区分：最終著者,　責任著者記述言語：英語掲載種別：研究論文（学術雑誌）

The elimination of electron transport layers (ETLs) to fabricate ETL-free perovskite solar cells (PSCs) could save manufacturing costs and time. However, compared with PSCs based on the traditional architecture, ETL-free PSCs suffered low efficiency due to the device shunting and large energy barriers for carriers. Herein, a bifunctional interfacial modification material, 3-aminopropyl trimethoxy silane (APS), is selected and in situ grown on a transparent conducting oxide (TCO). On the one hand, the increased hydrophobicity of APS modified indium tin oxide (ITO) could improve the crystal growth of perovskites, resulting in larger grain sizes and reduced surface defects. On the other hand, the APS modification could improve the energy level alignment of ITO and the perovskite, leading to enhanced electron extraction and hole blocking. The PCE of the ETL-free PSCs based on APS modified ITO reached 19.09%, which was over 60% higher than that of ETL-free PSCs based on ITO.

DOI： 10.1039/d2nj01965e

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A Heat-Liquefiable Solid Precursor for Ambient Growth of Perovskites with High Tunability, Performance and Stability 査読有り国際誌

He Y., Lin Z., Wang J., Zhang K., Xu X., Li Y., Huang X., Ma T., Xiao S., Yang S.

Small Methods 2022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）

Halide perovskites are intensively studied for applications in optoelectronic devices because of their outstanding properties and relatively low cost. However, the common precursor solutions for perovskite fabrication are rather unstable in the presence of moisture and oxygen, limiting the large-scale low-cost production of perovskite. Herein, water is used counterintuitively to formulate an ambient stable perovskite precursor, which is peculiar in that it is solid at room temperature but becomes a liquid at 75 °C. The non-fluidity of the precursor stemmed from the water-assisted intermediate fiber assembly, conferring high damp air stability. Yet the heat-liquefiability made the precursor highly processible for perovskite growth, and when guided by polyvinyl pyrrolidone coordination with Pb2+, the perovskite can preferentially grow along the [200] direction, significantly improving the film quality. To demonstrate the utility of the precursor, it has been used to fabricate self-driven halide perovskite photodetectors, which exhibited a low noise current of 2.0 × 10−14 A Hz−1/2, a high specific detectivity up to 1.4 × 1013 Jones, and high stability of 20 days of operation with only < 5% external quantum efficiency decay. This type of solid-liquid convertible precursor opens up new opportunities for wider applications of perovskites.

DOI： 10.1002/smtd.202200384

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Cascaded band gap design for highly efficient electron transport layer-free perovskite solar cells 査読有り国際誌

Gao L., Xu C., Su Y., Liu A., Ma T.

Chemical Communications 2022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 elimination of the electron transport layer (ETL) to fabricate ETL-free perovskite solar cells (PSCs) could save manufacturing cost and time. However, the direct contact of the perovskite and transparent conducting oxide (TCO) electrodes results in mismatched energy level alignment and current leakage. Therefore, ETL-free PSCs suffer from unsatisfactory photovoltaic performance. Herein, a special perovskite material with a cascaded band gap, called gradient homojunction perovskite (GHJP), is designed and synthesized by a large cation-assisted method. The inherent nature of GHJP was the type-II cascaded energy level alignment, which could block holes during the electron collection. This facilitated the dissociation of the excitons in the GHJP. Due to the excellent properties, ETL-free PSCs based on GHJP obtained 20.55% PCE, which was over 90% higher than that of ETL-free PSCs based on the control perovskite material.

DOI： 10.1039/d2cc01807a

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Computational screening of Cs based vacancy-ordered double perovskites for solar cell and photocatalysis applications 査読有り国際誌

Ye X., Liu A., Gao L., Zhang C., Yan L., Wen S., Ma T.

EcoMat 2022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）

The toxicity of lead ions in halide perovskite absorbing materials is the main bottleneck for practical application. To replace the traditional lead halide perovskites by environmental friendly double perovskite, computational tools based on density functional theory were employed to predict the intrinsic properties of potential double perovskites to efficiently and rapidly find more double perovskites with properties suitable for optoelectronic applications. Screening homovalent alternatives for B and X-site ions in vacancy-ordered double perovskite Cs2BX6 for solar cell applications and photocatalyst was done using Perdew–Burke–Ernzerhof and Heyd–Scuseria–Ernzerhof functional with spin-orbit coupling. Three empirical factors and formation enthalpy were used to evaluate the stability of 30 materials at different temperatures. Finally, the Cs-based vacancy-ordered double perovskites with suitable bandgap for optoelectronic applications can thus be obtained. Using computational techniques, this study can also provide theoretical guidance for the rational design of possible double perovskite materials with improved photocatalytic characteristics. (Figure presented.).

DOI： 10.1002/eom2.12295

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SnO<inf>x</inf> as Bottom Hole Extraction Layer and Top in Situ Protection Layer Yields over 14% Efficiency in Sn-Based Perovskite Solar Cells 査読有り国際誌

Wang L., Chen M., Yang S., Uezono N., Miao Q., Kapil G., Baranwal A.K., Sanehira Y., Wang D., Liu D., Ma T., Ozawa K., Sakurai T., Zhang Z., Shen Q., Hayase S., Wang L.

ACS Energy Letters 3703 - 3708 2022年01月

記述言語：英語掲載種別：研究論文（学術雑誌）

Sn-based perovskite solar cells (S-PSCs) are a promising candidate to replace toxic Pb-based PSCs. For promoting their industrial application, developing inorganic substitutions of unstable poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) is also an important part due to its intrinsic stability and low cost. Here, we in situ prepared ambipolar SnOx by a simple and fast plasma-assistant strategy (P-SnOx). The as-prepared P-SnOx works as a hole transport layer directly, yielding a 10.89 ± 0.51% power conversion efficiency (PCE) comparable to a PEDOT:PSS-based device (10.39 ± 0.72%). The top SnOx (T-SnOx), composed of SnO2 and Sn metal, as a modifier and a protection layer of the perovskite by reducing Sn4+ to Sn2+, gives a 13.08 ± 0.33% device performance. This in situ top protective strategy combined with P-SnOx as a hole transport layer further boosts the champion PCE of S-PSCs to 14.09% (13.5 ± 0.32%).

DOI： 10.1021/acsenergylett.2c01659

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Crab Shell-Derived SnS<inf>2</inf>/C and FeS<inf>2</inf>/C Carbon Composites as Anodes for High-Performance Sodium-Ion Batteries 査読有り国際誌

Chen Y., Zhao Y., Liu H., Ma T.

ACS Omega 2022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）

The demand for energy storage devices has increased significantly, and the sustainable development of lithium-ion batteries is limited by scarce lithium resources. Therefore, alternative sodium-ion batteries which are rich in resource may become more competitive in the future market. In this work, we synthesized low-cost SnS2/C and FeS2/C anode materials of sodium-ion batteries which used waste crab shells as biomass carbon precursor. The SnS2 nanosheet and FeS2 nanosphere structures are deposited on the crab shell-derived carbon through simple hydrothermal reaction. Due to the coexistence of transition metal dichalcogenides (TMDs) and crab-derived biomass carbon, the anode material has excellent cycle stability and rate performance. SnS2/C and FeS2/C deliver capacities of 535.4 and 479 mA h g-1 at the current density of 0.1 A g-1, respectively. This study explored an effective and economical strategy to use biomass and TMDs to construct high-performance sodium-ion batteries.

DOI： 10.1021/acsomega.2c06429

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High-performance carbon-based CsPbI<inf>2</inf>Br perovskite solar cells via small molecule modification 査読有り

Han Q., Yu F., Wang L., Yang S., Cai X., Meng X., Yūta O., Takeshi K., Zhang C., Ma T.

Journal of Power Sources 516 2021年12月

担当区分：筆頭著者記述言語：英語掲載種別：研究論文（学術雑誌）

All-inorganic CsPbI2Br perovskite material has attracted enormous attention for high-performance photovoltaics due to its excellent thermal stability and suitable bandgap. Furthermore, carbon-based CsPbI2Br perovskite solar cells (C-PSCs) not only further improve the thermal and moisture stability of the devices but also reduce production costs and simplify procedure processes. However, the usage of carbon electrodes introduces new problems, such as poor interface contact and energy level mismatch. Herein, the N-phenylthiourea (PTU) with S atom and N-phenylurea (PU) with O atom are applied for interface modification materials in C-PSCs. The atoms S and O can combine with Pb and enhance perovskite crystallinity as well as manage the energy level. Meanwhile, after passivation of PTU and PU, the defect state density of the perovskite layer is significantly reduced, thereby inhibiting the recombination of carriers. The Voc of the device with PTU increases from 1.12 V to 1.22 V, 9% improvement over the control device. The efficiency of CsPbI2Br C-PSCs is improved from 10.29% to 13.01% after modification. Furthermore, the stability of the device has been improved. This study provides a strategy for developing highly efficient and stable C-PSCs.

DOI： 10.1016/j.jpowsour.2021.230676

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MOFs and their derivatives as Sn-based anode materials for lithium/sodium ion batteries 査読有り

Liu K., Li C., Yan L., Fan M., Wu Y., Meng X., Ma T.

Journal of Materials Chemistry A 9 ( 48 ) 27234 - 27251 2021年12月

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

The rapid development of electric vehicles and consumer electronics places higher demands on the performance of secondary batteries. Tin-based materials are expected to be a commercial anode material candidate of next-generation rechargeable batteries due to their high gravimetric/volumetric capacity. However, tin anodes have large volume changes during charge-discharge cycles which leads to a rapid capacity decay. Emerging tin-based metal-organic frameworks (Sn-MOFs) have recently attracted the attention of researchers. Their characteristics of tunable porosity, huge surface areas and multiple active sites offer a wide range of possibilities for Li/Na ion storage and transport, and the coordination bonds stabilize the Sn atoms to the organic matrix buffering pulverization and aggregation. Besides, MOF-related Sn derivatives could also have novel diverse functional structures and achieve high-rate capacity and excellent cycle stability. In this review, we mainly summarize the structural features, energy storage mechanism, and recent advances in the rational design and preparation of Sn-MOFs and MOF-derived Sn-based composites for LiB and SIB anodes, and current challenges and future directions for further development are discussed.

DOI： 10.1039/d1ta06996a

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Over 23% power conversion efficiency of planar perovskite solar cells via bulk heterojunction design 査読有り

Yang S., Han Q., Wang L., Zhou Y., Yu F., Li C., Cai X., Gao L., Zhang C., Ma T.

Chemical Engineering Journal 426 2021年12月

担当区分：筆頭著者記述言語：英語掲載種別：研究論文（学術雑誌）

The planar organic–inorganic hybrid perovskite solar cells (PSCs) have in recent years had remarkable success due to their superior optoelectronic performance. However, their power conversion efficiency is significantly inferior compared to mesoporous structure PSCs. Unlike most other advances focusing on non-perovskite materials to improve device performance, herein a multifunctional double perovskite material, Cs2PtI6, is proposed as the grain boundary modifier of organic–inorganic hybrid perovskite films. Results show three main benefits of introducing Cs2PtI6 into perovskite films: (1) it prompts growth of perovskite crystals, resulting in improved crystallinity and enlarged crystals; (2) it suppresses the trap assisted recombination at grain boundaries thanks to the formation of heterojunction and interface passivation; (3) it raises the efficiency of carrier collection and transport at grain boundaries owing to the high carrier mobility of Cs2PtI6. Consequently, a PCE of 23.56% is achieved. The unencapsulated devices show less than 10% degradation compared to the initial performance after storage in ambient (≈ 30%) humidity for 2000 h. This study outlines a simple yet effective strategy for boosting the performance of planar PSCs.

DOI： 10.1016/j.cej.2021.131838

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Organic ammonium salt-assisted pinhole-free CuSCN films for carbon-based perovskite solar cells 査読有り

He Z., Meng F., Li L., Gao L., Ma T.

New Journal of Chemistry 45 ( 45 ) 21382 - 21388 2021年12月

担当区分：筆頭著者記述言語：英語掲載種別：研究論文（学術雑誌）

Due to the low cost and strong hydrophobicity of carbon electrodes, carbon-based perovskite solar cells (C-PSCs) have drawn much attention. Copper(i) thiocyanate (CuSCN) is a favorable hole transport layer in perovskite solar cells (PSCs) because of its high chemical stability, high conductivity, and high hole mobility, but pinholes often appear during CuSCN film fabrication. In this work, organic ammonium salt, phenethylammonium iodide (PEAI), has been applied to modify the CuSCN film. The results indicated that PEAI not only eliminated the pinholes, but also passivated the perovskite film and enhanced the interfacial connection. Therefore, the power conversion efficiency (PCE) of C-PSCs increased by about 11%. The stability test showed that the C-PSCs, without any encapsulation, could maintain 70% of the initial efficiency after storage for 800 h in ambient air with 60%-70% relative humidity at room temperature.

DOI： 10.1039/d1nj04068e

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Theoretical and experimental study of the influence of PEG and PEI on copper electrodeposition 査読有り

Liang X., Ren X., He R., Ma T., Liu A.

New Journal of Chemistry 45 ( 42 ) 19655 - 19659 2021年11月

担当区分：筆頭著者記述言語：英語掲載種別：研究論文（学術雑誌）

Through theoretical calculation and experimental research, the electrodeposition process of preparing a copper catalyst in an acid electrolyte using polyethylene glycol (PEG), polyethylene imine (PEI), and a PEG and PEI mixture as additives was studied. The cutting-edge molecular orbital information of PEG and PEI was studied through quantum chemical calculations. Molecular dynamics simulations were performed to study the interface interaction between PEG and PEI and the metal surface. The microscopic morphology and crystal structure of the coating were characterized by scanning electron microscopy (SEM) and X-ray diffractometer (XRD). It is found that adding composite additives to the studied acidic copper electroplating could obtain a copper coating with a spherical shape, small particle size, and good dispersion effect. This study proves that a PEI and PEG-based copper plating solution is a promising method for preparing high-performance copper-based catalysts in the acid copper electroplating process.

DOI： 10.1039/d1nj03503g

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Investigation of the interfacial behavior of organics on sulfide semiconductor surfaces by quantum chemical calculations and molecular dynamics simulations 査読有り

Zhu H., Ren X., Yan S., Liang X., Gao L., Li Y., Zhao Q., Ma T., Liu A.

New Journal of Chemistry 45 ( 41 ) 19321 - 19328 2021年11月

担当区分：筆頭著者記述言語：英語掲載種別：研究論文（学術雑誌）

The presence of organic pollutants in the world is harmful to our existence and the environment. So efficient and energy-saving methods for the degradation of organic pollutants present in the environment are important and beneficial for humans and the environment. The use of emerging photocatalytic technology using semiconductor materials to degrade organic pollutants is an effective method with potential prospects for the future. In this work, quantum chemical calculations and classical molecular dynamics simulations are employed to investigate the performances and related reactivities of sulfide semiconductor materials for the photocatalytic degradation of several common organic compounds. The reactivity of the organics is studied using quantum chemical calculations. The adsorption behaviors of several types of organic compounds on the surfaces of sulfide semiconductors in the gas phase were investigated, then similar adsorption processes in the aqueous phase were studied, and then CdS semiconductors were used to explore the influence of different crystal planes on the adsorption behavior of organic matter. Based on adsorption energy calculations, the best adsorption performance for a specific type of organic matter on a sulfide semiconductor was explored, together with an adsorption comparison in the gas and water phases. The results of this study may provide theoretical guidance for sulfide semiconductor photocatalysis technology and give ideas for subsequent experiments.

DOI： 10.1039/d1nj02939h

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Recent progress in metal sulfide-based electron transport layers in perovskite solar cells 査読有り

He Z., Zhou Y., Liu A., Gao L., Zhang C., Wei G., Ma T.

Nanoscale 13 ( 41 ) 17272 - 17289 2021年11月

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

High-quality electron transport layers (ETLs) are essential for stable and efficient perovskite solar cells (PSCs). Metal sulfides (MSs) are considered potential candidates for ETLs due to their high carrier mobility, low cost, and favorable chemical and physical stability. The quality of the MS films plays important role in the photovoltaic performance of PSCs. However, few reports focus on the relative preparation, characteristics, and corresponding mechanisms of MS-based ETLs. In this review, MS-based ETLs are summarized according to their preparation strategies and the mechanism. We hope that this review can help others understand the intrinsic phenomena of MS-based ETLs and motivate further investigations. This journal is

DOI： 10.1039/d1nr04170c

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Two-dimensional nanosheets constituted trimetal Ni-Co-Mn sulfide nanoflower-like structure for high-performance hybrid supercapacitors 査読有り

Zhang J., Li C., Fan M., Ma T., Chen H., Wang H.

Applied Surface Science 565 2021年11月

担当区分：筆頭著者記述言語：英語掲載種別：研究論文（学術雑誌）

Trimetal NiCoMn-based sulfides with two-dimensional (2D) nanosheets constituted flower-like structures have been synthesized using an anion exchange approach, which exhibit excellent performance as electroactive battery materials for hybrid supercapacitors. These NiCoMn-based sulfides were transformed from layered hydroxides while well maintaining 2D nanosheets constituted flower-like structure. The amounts of Mn constitution have been tuned to control performance of sulfides. It is found that Mn doping causes formation of pure phase sulfide while maintaining same flower-like structure. Mn-doping can enhance specific capacity and cycling stability of sulfides, and resulting sulfides maintain a low charge transfer resistance. Mn-doped sulfides display a maximum specific capacity of 657.7C g−1 at 1 A g−1, and a specific capacity of 339.5C g−1 has been achieved when the specific current increases by 50 times to 50 A g−1. More significantly, the NiCoMn-based sulfide has been used to assemble hybrid supercapacitors with reduced graphene oxide, which achieves a maximum specific energy of 36.3 Wh kg−1 combined with long-term cycling stability.

DOI： 10.1016/j.apsusc.2021.150482

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A flower-like α-phase nickel-cobalt-manganese hydroxide modified with two-dimensional Ti<inf>3</inf>C<inf>2</inf> for high performance hybrid supercapacitors 査読有り国際誌

Zhang J., Chen H., Chen Z., Li C., Meng X., Fan M., Ma T.

Electrochemical Science Advances 1 ( 4 ) 2021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）

A flower-like nickel-cobalt-manganese hydroxide (NiCoMn-OH) modified with two-dimensional Ti3C2 nanoflakes has been synthesized via simple one-step hydrothermal method. The NiCoMn-OH/Ti3C2 composite exhibits a high specific capacity of 670.3 C/g at a specific current of 1 A/g, higher than 614.6 C/g for NiCoMn-OH and 8.9 C/g for Ti3C2 at the same conditions. The improved electrochemical performance is due to that Ti3C2 is absorbed and distributed on the surface of NiCoMn-OH in its situ synthesis process and enhances its electro-activity. The hybrid supercapacitor based on NiCoMn-OH/Ti3C2 and RGO shows high specific capacity of 177.5 C/g at 0.5 A/g and 103.1 C/g at 10 A/g, retaining 93.28% of initial capacity after 5000 charge/discharge cycles at 7 A/g. The hybrid supercapacitor also displays extraordinary specific energy of 41.15 Wh/kg at a specific power of 375 W/kg and 21.46 Wh/kg even at 7.5 kW/kg.

DOI： 10.1002/elsa.202100018

その他リンク： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85136934401&origin=inward

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