电容和扩散贡献的磁触发相互作用,以提高超级电容器性能.
Peeyush Pandey1, Sourav Bhowmick1,2, Mohammad Qureshi1
1Materials Science Laboratory, Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India.
ACS applied materials & interfaces
|August 11, 2023
概括
外部磁场通过调整充电储存机制来提高超级电容器的性能. 用进行兴奋剂进一步优化电容性行为,以改善,和铜碳酸氧化电极的电荷-放电特性.
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
- 纳米技术 纳米技术
背景情况:
- 超级电容器通过电容或离子扩散机制储存能量,影响功率和能量密度.
- 控制这些机制之间的相互作用对于高性能储能设备至关重要.
- 外部磁场提供了一种新的方法来调整超级电容器的电化学行为.
研究的目的:
- 研究外部磁场对,和铜碳酸 (NiCoCuCH) 的电荷储存机制的影响.
- 探索兴奋剂对NiCoCuCH在超级电容器应用中的磁性和电化学性能的影响.
- 使用磁场操纵优化不对称超级电容器设备的性能.
主要方法:
- NiCoCuCH和添加 NiCoCuCH (Al-NiCoCuCH) 电极的合成和表征.
- 在变化的外部磁场 (0-250mT) 下对电极进行电化学测试.
- 在最佳磁场条件下制造和评估非对称超级电容器 (NiCoCuCH/AC) 装置.
主要成果:
- 外部磁场调节了NiCoCuCH和Al-NiCoCuCH电极中的电容和离子扩散贡献.
- 在磁场下的铁磁合增强促进了氧化还原通路,改善了电荷-放电特性.
- 通过改变晶体对称性和限制磁域对齐,Al3+兴奋剂增加了电容贡献,以牺牲能量密度来提高电荷-放电性能.
结论:
- 外部磁场提供了一种有效的手段来控制基于NiCoCuCH的超级电容器中的电荷存储机制.
- 兴奋剂提供了一种进一步增强电容性行为和改善电荷-放电特性的策略.
- 一个使用NiCoCuCH在110mT的不对称超级电容器装置显示出出色的特定容量,能量密度和功率密度.
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