低温环氧LiMn2O4 阴极由NiCo启用2O4 高性能微型电池的电流收集器
Adam J Lovett1, Venkateswarlu Daramalla2,3, Farheen N Sayed3,4
1Department of Materials Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge CB3 0FS, United Kingdom.
ACS energy letters
|August 17, 2023
概括
在一个新的氧化电流收集器上,以创纪录的低360°C生长了Epitaxial氧化阴极. 这一突破使先进电子产品的稳定,高性能离子微电池成为可能.
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
- 固态化学 固态化学
背景情况:
- 在理解离子微型电池中的离子运输和降解方面,Epitaxial阴极至关重要.
- 目前的高温生长方法 (>600°C) 限制了CMOS兼容设备的制造和可扩展性.
- 低温 (<450°C) 制造对于将微型电池整合到柔性电子和医疗技术中至关重要.
研究的目的:
- 为了研究表轴LiMn2O4 (LMO) 薄膜的结构和电化学特性.
- 开发LMO阴极的低温 (<450°C) 制造工艺.
- 在新的NiCo2O4 (NCO) 电流收集器上评估LMO薄膜的性能和稳定性.
主要方法:
- 在360°C时,LiMn2O4薄膜在NiCo2O4电流采集器上的表面增长.
- 薄膜的结构特征.薄膜的结构特征.
- 电化学循环评估容量,稳定性和还氧化行为.
主要成果:
- 在NCO上LMO薄膜在360°C的低温上成功增长,比以前的方法低200°C.
- 在大约6000个循环中实现了超过100mAhg-1的放电容量.
- 证明了长期的电化学稳定性和独特的LMO氧化还原特征,证实了NCO收集器的性能.
结论:
- 建立了一个可行的低温路径,用于制造微电池的高性能表轴LMO阴极.
- 新型NCO电流采集器在降低温度下实现稳定循环,促进CMOS兼容性.
- 这项工作为物联网,柔性电子和医疗技术的先进小型化离子微电池铺平了道路.
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