大学化学 >> 2022, Vol. 37 >> Issue (2): 2108063.doi: 10.3866/PKU.DXHX202108063

所属专题: 化学实验教学和管理

化学实验 上一篇    下一篇

碳布负载氢氧化镍电极材料的合成及其电容性能分析——推荐一个综合化学实验

张琳(), 要红昌, 李朝辉, 李中军   

  • 收稿日期:2021-08-23 录用日期:2021-10-08 发布日期:2021-10-25
  • 通讯作者: 张琳 E-mail:zhanglin@zzu.edu.cn
  • 作者简介:张琳, Email: zhanglin@zzu.edu.cn
  • 基金资助:
    郑州大学2020年度校级教育教学改革研究与实践项目(2020zzuJXLX175);郑州大学2020年度校级教育教学改革研究与实践项目(2020zzuJXLX022)

Synthesis and Capacitive Property Analysis of a Nickel Hydroxide Electrode Material Located on Carbon Cloth: A Recommended Comprehensive Chemistry Experiment

Lin Zhang(), Hongchang Yao, Zhaohui Li, Zhongjun Li   

  • Received:2021-08-23 Accepted:2021-10-08 Published:2021-10-25
  • Contact: Lin Zhang E-mail:zhanglin@zzu.edu.cn

摘要:

作为超级电容器的电极材料,Ni(OH)2具有理论比电容高、来源丰富、环境友好等优点,但较低的电导率影响了其实际性能。解决该问题的一种有效方法是在碳布导电基底上原位生长Ni(OH)2薄膜。以此为基础设计综合化学实验,通过Ni(OH)2/碳布薄膜电极的制备、表征及电化学性能测试,使学生进一步理解化学平衡原理在材料合成中的应用,了解材料的基本表征方法,掌握循环伏安法、恒流充放电法等电化学分析方法在实际测试中的运用与解析,从而达到巩固电化学理论知识、培养学生的实验技能、提高学生综合实验能力的目的。本实验的开展还可以帮助学生了解储能领域的科技前沿,激发学生的科研兴趣,培养学生的科研创新意识,适合在大学化学实验中推广应用。

关键词: 氢氧化镍, 超级电容器, 循环伏安, 直流充放电, 综合实验

Abstract:

Ni(OH)2 has many advantages as an electrode material for supercapacitors, including a high theoretical specific capacitance, abundant sources, and that it is environmentally friendly. However, its low conductivity significantly limits its electrochemical properties. An effective method to address this issue is through the in situ growth of Ni(OH)2 on a conductive carbon cloth substrate. Herein, we propose a comprehensive chemical experiment that includes the synthesis of Ni(OH)2 on carbon cloth, characterization of the electrode materials, and determination of its electrochemical properties. Such a comprehensive experiment will strengthen students' understanding of the chemical equilibrium principle applied in material synthesis, expose them to additional characterization methods and advanced electrochemical analysis methods, such as cyclic voltammetry and galvanostatic charging and discharging, establish basic theoretical knowledge of electrochemistry, and enhance their laboratory skills and comprehensive ability. In addition, this experiment can also assist students to understand the frontier of energy storage technology, stimulate their interest in scientific research, and cultivate their awareness of scientific research innovations. Therefore, this experiment is suitable for use as a college chemistry experiment.

Key words: Nickel hydroxide, Supercapacitor, Cyclic voltammetry, Galvanostatic charge/discharge, Comprehensive experiment

MSC2000: 

  • G64