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Hierarchically novel bead-curtain-like zinc-cobalt sulfides arrays toward high energy density hybrid supercapacitors via morphology engineering

机译:通过形态学工程,朝向高能密度杂交超级电容器的分层新珠帘状锌 - 硫化物阵列

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摘要

Rational design of the electrode materials in distinctive architecture and tailored composition is critical for regulating their electrochemical properties. Herein, the novel porous zinc-cobalt sulfides (ZCS) bead-curtain-like arrays (BCA) supported by three-dimensional Ni foam (NF) (denoted as ZCS/NF BCA) are fabricated as advanced electrode for supercapacitors (SCs), which exhibit remarkable electrochemical performances in respect of superb capacity of similar to 837 C g(-1) (specific capacitance of similar to 1860 F g(-1)) at 1 A g(-1) and ultra-long cycling stability (similar to 92.9% retention after 5000 cycles at 6 A g(-1)). Furthermore, the assembled hybrid supercapacitors based on ZCS/NF BCA delivers ultrahigh energy density of similar to 88 Wh kg(-1) with a maximum power density of similar to 800 W kg(-1). The excellent properties may be ascribed to the combined contributions from the hierarchical bead-curtain architecture of ZCS/NF BCA composite and the bimetallic sulfide with abundant valence states for rich redox reactions.
机译:独特建筑和量身定制的组合物中电极材料的合理设计对于调节其电化学性质至关重要。这里,由三维Ni泡沫(NF)支撑的新型多孔锌 - 钴硫化物(ZCS)珠帘状阵列(BCA)(表示为ZCS / NF BCA),用于超级电容器(SCS)的先进电极,其具有相对于837℃(-1)的高度容量(类似于1860V(-1)的特定电容),其表现出显着的电化学性能,在1AG(-1)和超长循环稳定性(类似在6A(-1)的5000次循环后持续92.9%。此外,基于ZCS / NF BCA的组装混合超级电容器可提供类似于88WH kg(-1)的超高能量密度,其最大功率密度类似于800W kg(-1)。优异的性能可以归因于来自ZCS / NF BCA复合材料的分层珠帘结构和具有丰富的氧化还原反应的丰富级硫化硫化物的组合贡献。

著录项

  • 来源
    《Journal of power sources》 |2021年第31期|229535.1-229535.10|共10页
  • 作者单位

    Huaiyin Normal Univ Sch Chem & Chem Engn Jiangsu Key Lab Chem Low Dimens Mat Huaian 223300 Peoples R China|East China Univ Sci & Technol Sch Mat Sci & Engn Key Lab Ultrafine Mat Minist Educ Shanghai 200237 Peoples R China;

    Xian Univ Technol Inst Adv Electrochem Energy Xian Key Lab New Energy Mat & Devices Xian 710048 Shanxi Peoples R China|Xian Univ Technol Sch Mat Sci & Engn Xian 710048 Shanxi Peoples R China;

    Huaiyin Normal Univ Sch Chem & Chem Engn Jiangsu Key Lab Chem Low Dimens Mat Huaian 223300 Peoples R China;

    Huaiyin Normal Univ Sch Chem & Chem Engn Jiangsu Key Lab Chem Low Dimens Mat Huaian 223300 Peoples R China;

    Huaiyin Normal Univ Sch Chem & Chem Engn Jiangsu Key Lab Chem Low Dimens Mat Huaian 223300 Peoples R China;

    Huaiyin Normal Univ Sch Chem & Chem Engn Jiangsu Key Lab Chem Low Dimens Mat Huaian 223300 Peoples R China;

    East China Univ Sci & Technol Sch Mat Sci & Engn Key Lab Ultrafine Mat Minist Educ Shanghai 200237 Peoples R China;

    Zhengzhou Univ Ctr Int Cooperat Designer Low Carbon & Environm M Zhengzhou 450001 Henan Peoples R China;

    Xian Univ Technol Inst Adv Electrochem Energy Xian Key Lab New Energy Mat & Devices Xian 710048 Shanxi Peoples R China|Xian Univ Technol Sch Mat Sci & Engn Xian 710048 Shanxi Peoples R 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);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Bead-curtain-like; Hierarchical; Zinc-cobalt sulfides; Hybrid supercapacitors;

    机译:珠帘状;等级;锌 - 钴硫化物;杂交超级电容器;

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