在离子电极中测量异型体积电阻
M J Lain1, G Apachitei1, D-E Dogaru1
1WMG, University of Warwick Coventry CV4 7AL UK m.j.lain@warwick.ac.uk.
RSC advances
|November 29, 2023
概括
离子涂层中的电子导电性对于电池开发至关重要. 接口电阻,而不是涂层电阻,主导较厚的电极的总电阻,影响高功率应用.
科学领域:
- 材料科学 材料科学 材料科学
- 电化学 电化学 电化学
- 电池技术 电池技术
背景情况:
- 电子导电性测量对于离子电极开发至关重要.
- 较厚的电极和高功率的应用需要精确的导电特性.
研究的目的:
- 描述不同配方和外层重量的离子电极.
- 确定导致电极通平面电阻总量的因素.
主要方法:
- 使用一个46探头阻力测量系统.
- 采用有限体积模型进行数据分析和解释.
主要成果:
- 通过平面的总阻力主要由涂层金属接口阻力控制.
- 涂层的体积电阻比接口电阻要小.
- 在含有碳纳米管的涂层中观察到异型平面内电阻.
结论:
- 高功率离子电池中的电极性能受到接口特性的显著影响.
- 碳纳米管的包含会影响电极涂层内的定向导电性.
- 准确的建模对于理解和优化电极电阻至关重要.
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