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首页> 外文期刊>Journal of materials science >Flake-like nickel/cobalt metal-organic framework as high-performance electrodes for supercapacitors
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Flake-like nickel/cobalt metal-organic framework as high-performance electrodes for supercapacitors

机译：片状镍/钴金属 - 有机框架作为超级电容器的高性能电极

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摘要

Flake-like NiCo bimetal-organic framework (NiCo-MOF) is prepared via a simple one-step hydrothermal process. By combining the advantages of composition designing and distinctive microanostructures, the flake-like NiCo-MOF constructed with two-dimensional (2D) nanosheets can be a promising candidate as active material for high-performance supercapacitors (SCs) in the aspect of enhanced specific capacitance and stability. In a three-electrode system using 1 m KOH as electrolyte, the fabricated flake-like NiCo-MOF electrode exhibits high-specific capacitance (1107.3 F g~(-1) at 1 A g~(-1)), good rate performance (76.7% retention of its highest capacitance at 10 A g~(-1)) and long-term cycling stability (70.1 % capacity retention after 5000 cycles at 15 A g~(-1)). Furthermore, an energy storage device based on reduced graphene oxide and flake-like NiCo-MOF shows a maximum energy density of 30.81 Wh kg~(-1) at a power density of 749.9 W kg~(-1) with high capacitance retention of ～85.3% (up to 5000 cycles at 15 A g~(-1)).
机译：通过简单的一步水热法制备塑料状Nico双金属 - 有机框架（Nico-Mof）。通过组合组成设计和独特的微/纳米结构的优点，用二维（2D）纳米晶片构建的片状NiCO-MOF可以是增强的高性能超级电容器（SCS）的有希望的候选物作为活性材料具体的电容和稳定性。在使用1M KOH作为电解质的三电极系统中，制造的片状Nico-MOF电极具有高特定的电容（1107.3f g〜（-1），在1 a g〜（-1）），速率差效（76.7％在10 A g〜（-1）的最高电容上的76.7％）和长期循环稳定性（50.1％的容量保留在5000次循环下，15A G〜（-1））。此外，基于氧化石墨烯和薄片状Nico-Mof的能量存储装置，其功率密度为749.9Wkg〜（-1）的最大能量密度，高电容保留〜85.3％（15 A g〜（-1）+ 5000周期）。

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  • 来源
    《Journal of materials science》 |2020年第19期|16260-16268|共9页
  • 作者

    Xiaolong Zhang; Jiemei Wang; Xiang Ji; Yanwei Sui; Fuxiang Wei; Jiqiu Qi; Qingkun Meng; Yaojian Ren; Yezeng He; Dongdong Zhuang;

  • 作者单位

    School of Materials and Physics China University of Mining and Technology Xuzhou 221116 People's Republic of China;

    China National Heavy Duty Truck Group Co. Ltd No 777 Huaao Road Jinan People's Republic of China;

    China National Heavy Duty Truck Group Co. Ltd No 777 Huaao Road Jinan People's Republic of China;

    School of Materials and Physics China University of Mining and Technology Xuzhou 221116 People's Republic of China;

    School of Materials and Physics China University of Mining and Technology Xuzhou 221116 People's Republic of China;

    School of Materials and Physics China University of Mining and Technology Xuzhou 221116 People's Republic of China;

    School of Materials and Physics China University of Mining and Technology Xuzhou 221116 People's Republic of China;

    School of Materials and Physics China University of Mining and Technology Xuzhou 221116 People's Republic of China;

    School of Materials and Physics China University of Mining and Technology Xuzhou 221116 People's Republic of China The Jiangsu Province Engineering Laboratory of High Efficient Energy Storage Technology and Equipment Xuzhou People's Republic of China;

    School of Material Science and Engineering Jiangsu University Jiangsu Zhenjiang 212013 People's Republic of China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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