原位生长自编织状多孔道NiCo<sub>2</sub>O<sub>4</sub>纳米片及电容性能研究

刘沛静; 辛福恩

原位生长自编织状多孔道NiCo₂O₄纳米片及电容性能研究

陕西国防工业职业技术学院化学工程学院, 陕西西安 710300

基金项目:

陕西省教育厅科研计划项目资助（19JK0084）。

详细信息

作者简介:
刘沛静,女,1985年生,讲师,研究方向:锂离子电池中不可再生材料的回收与二次利用,超级电容器电极材料的合成与电化学测试。

中图分类号: TB34
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出版历程
- 收稿日期: 2020-03-11
- 网络出版日期: 2024-03-13

In-situ Growth Self-woven NiCo₂O₄ Nanosheet Multi-channels and its Capacitance Properties

Department of Chemical Engineering, Shaanxi Institute of Technology, Xi'an 710300, China

摘要

摘要: 采用一种多孔道NiCo₂O₄纳米片制备方法，利用简单的水热法，通过均相化学共沉淀的方式，在预处理后的泡沫镍基底上原位生长自编织状多孔道NiCo₂O₄纳米片，制备得到复合电极NiCo₂O₄-泡沫镍。经测试，当电流密度增加至20 A/g，复合电极的电容保持率为89%，在0.5 A/g的电流密度下，循环测试5000圈，电容仅衰减了15%。复合电极优异的电化学性能都归因于其特殊的自编织多孔道结构，为电化学反应提供更加充足的活性位点，有效提高了电解液离子的渗透和电子转移速率，增加了电极材料结构的稳定性。该方法能够有效提高NiCo₂O₄的电化学性能，增加了其在储能市场的应用潜力。
- NiCo₂O₄ /
- 自编织 /
- 多孔道 /
- 原位生长 /
- 储能领域
Abstract: A kind of novel self-woven NiCo₂O₄ nanosheets of multi channels on the nickel foam was successfully obtained through an in-situ hydrothermal method and by means of coprecipitation of homogeneous phase, so the the NiCo₂O₄-nickel foam composite electrode was obtained. According to electrochemical tests, the capability retention rate of the composite electrode was 89% when the electric current density increased from 1 to 20 A/g; and the cycle stability could reach 85% retention after the 5000 cycles of test at 0.5 A/g. The excellent electrochemical performance of composite electrode is attributed to the special self-woven multi-channel structure of the electrode. The structure provides more active sites for electrochemical reactions, effectively improves the electrolyte ion penetration and electron transfer rate, and increases the structure stability of the electrode material. This method can significantly improve the electrochemical performance of NiCo2O4 and increase the application potential of the electrode material in the energy storage market.
- NiCo₂O₄ /
- self-made /
- multi-channels /
- in situ growth /
- energy storage

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