化设计用于高度稳定的电解质,以实现高质量负载和长周期寿命的基双离子电池
Yuwei Lin1,2, Jian Shang1,3, Yuhua Liu1,4
1Advanced Energy Storage Technology Research Center, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China.
Advanced materials (Deerfield Beach, Fla.)
|April 23, 2024
概括
替代电解质通过提高氧化稳定性和电极兼容性来增强基于的双离子电池 (SDIB). 这导致了高压SDIB的特殊周期寿命和高容量保留.
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:
- 基于的双离子电池 (SDIB) 对高压,低成本的储能充满希望.
- 传统的电解质具有较差的氧化稳定性和电极材料兼容性,限制了电池的寿命.
- 开发稳定的电解质对于推进SDIB技术至关重要.
研究的目的:
- 为SDIB电解质引入一种新的化设计.
- 为了提高电解质的氧化稳定性和与电极材料的兼容性.
- 改善SDIBs的周期寿命和性能.
主要方法:
- 由合成的 (Cl) 替代的乙基甲基碳酸盐 (EMC) 电解质.
- 使用电化学方法研究电解质的氧化稳定性.
- 在高质量负载下使用石墨阴极评估SDIB性能.
- 评估循环稳定性和在延长循环期间保持容量.
主要成果:
- 化电解质显著增加了氧化稳定性.
- 观察到电解质与阴极和阳极材料的兼容性得到改善.
- 一个纳米基底基底石墨SDIB在3.0-5.0V的电压下实现了104.6 mAh的g-1高阴极质量负载.
- 证明了异常的循环稳定性,在900个周期内容量衰减最小,并具有恢复能力.
结论:
- 化是为SDIB设计高压电解质的有效策略.
- 开发的电解质使SDIBs具有长期周期稳定性和高性能.
- 这种方法为先进的,耐用的基于的储能设备提供了途径.
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