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首页> 外文期刊>Chemistry: A European journal >Three-Dimensional Fibrous Network of Na0.21MnO2 for Aqueous Sodium-Ion Hybrid Supercapacitors
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Three-Dimensional Fibrous Network of Na0.21MnO2 for Aqueous Sodium-Ion Hybrid Supercapacitors

机译：钠离子杂交超级电容器水溶液三维纤维网络

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摘要

Sodium-ion hybrid supercapacitors are potential energy-storage devices and have recently received enormous interest. However, the development of cathode materials and the use of nonaqueous electrolyte remain a great challenge. Hence, aqueous Na-ion hybrid supercapacitors based on a three-dimensional network of NaMnO_2 were developed. The cathode material was synthesized by the electro- oxidation of potassium manganese hexacyanoferrate nanocubes. The oxidized compound was confirmed to be Na_(0.21)MnO_2 by various physical characterization methods. Manganese dioxide is a well-characterized material for aqueous asymmetric pseudocapacitors, but its usage at high operating voltages is limited due to the electrochemical stability of water. Nevertheless, high-potential and high-performance aqueous supercapacitors exhibiting a cell potential of 2.7 V were developed. Further, the practical applicability of an asymmetric supercapacitor based on NaMnO_2 (cathode) and reduced graphene oxide (anode) was demonstrated by powering a 2.1 V red LED.
机译：钠离子杂交超级电容器是潜在的储能设备，最近获得了巨大的兴趣。然而，阴极材料的发展和非水电解质的使用仍然是一个很大的挑战。因此，开发了基于NamnO_2的三维网络的Na离子杂化超级电容器。通过钾六氰基甲醛甲醛甲醛的电氧化合成阴极材料。通过各种物理表征方法确认氧化化合物是Na_（0.21）MnO_2。二氧化锰是一种用于含水不对称假壳水溶液的良好特征的材料，但由于水的电化学稳定性，其在高工作电压下的用法受到限制。然而，开发了表现出2.7V的电池电位的高潜力和高性能水性超级电容器。此外，通过供电2.1V红色LED来证明基于NamNO_2（阴极）和还原的石墨烯（阳极）的非对称超电流器的实际适用性。

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  • 来源
    《Chemistry: A European journal》 |2017年第10期|共8页
  • 作者

    Natarajan Karikalan; Chelladurai Karuppiah; Shen-Ming Chen; Murugan Velmurugan; Periyasami Gnanaprakasam;

  • 作者单位

    Electroanalysis and Bioelectrochemistry Laboratory Department of Chemical Engineering and Biotechnology National Taipei University of Technology No.1 Section 3 Chung-Hsiao East Road Taipei 106 (Taiwan);

    Electroanalysis and Bioelectrochemistry Laboratory Department of Chemical Engineering and Biotechnology National Taipei University of Technology No.1 Section 3 Chung-Hsiao East Road Taipei 106 (Taiwan);

    Electroanalysis and Bioelectrochemistry Laboratory Department of Chemical Engineering and Biotechnology National Taipei University of Technology No.1 Section 3 Chung-Hsiao East Road Taipei 106 (Taiwan);

    Electroanalysis and Bioelectrochemistry Laboratory Department of Chemical Engineering and Biotechnology National Taipei University of Technology No.1 Section 3 Chung-Hsiao East Road Taipei 106 (Taiwan);

    Department of Chemistry Karunya University Coimbatore Tamil Nadu 641114 (India);

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 应用化学;
  • 关键词

    electrochemistry; manganese; oxidation; sodium; supercapacitors;

    机译：电化学;锰;氧化;钠;超级电容器;

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