具有高离子导电性的分离器使电化学电容器能够在高功率下进行线程过
Yajie Hu1, Puying Li1, Guobin Lai2,3
1Key Laboratory of Organic Optoelectronics & Molecular Engineering, Ministry of Education; State Key Laboratory of Flexible Electronics Technology; Department of Chemistry, Tsinghua University, Beijing, 100084, P. R. China.
工程分离器显著提高了线路过电化学电容器 (LFEC) 的性能. 这一突破使得高功率线路过应用能够通过克服以前的电容和离子电阻限制.
科学领域:
- 电化学 电化学 电化学
- 材料科学 材料科学 材料科学
- 储能 储能 储能 储能 储能 储能
背景情况:
- 线路过电化学电容器 (LFEC) 是有前途的,但受到低高频电容和高离子电阻的限制.
- 现有的LFEC在没有负载或低功率条件下扎,阻碍了实际应用.
研究的目的:
- 调查分离器在LFEC性能中的作用.
- 开发先进的分离器,以提高离子运输和电容.
- 为了使LFEC的高功率线路过应用成为可能.
主要方法:
- 开发一个3微米厚的线程定结构分离器.
- 离子电阻和面积电容的表征.
- 在平行堆集成LFECs.
- 在高功率负载条件下进行机载现场测试.
主要成果:
- 新型分离器实现了低离子电阻 (25 mΩ cm2) 和高面积电容 (6.6 mF cm−2).
- 平行堆集成增加了两个数量级的面积容量,而不会影响频率响应.
- 在高负载功率密度为2.5 W cm-2.2 的情况下,成功抑制的电压波纹低于5%.
结论:
- 分离器工程对于提高LFEC性能至关重要.
- 开发的LFEC适用于实际的高功率线路过应用.
- 这项研究为高性能电化学能量存储设备开辟了新的途径.
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