转化诱导的多功能添加剂使高性能金属电池成为可能.
Yuanhang Gao1, Gang Wu1, Wenqiang Fang1
1School of Materials Science and Engineering, Key Laboratory of Electronic Packaging and Advanced Functional Materials of Hunan Province, Central South University, Changsha, 410083, P. R. China.
Angewandte Chemie (International ed. in English)
|March 11, 2024
概括
这项研究介绍了金属电池 (LMB) 的新型人工转化策略. 新的添加剂,二甲基三甲基酸盐 (DTMSP) 和1,3-二甲基利米达三乙酸盐 (DITFA),提高了电解质稳定性和电池性能.
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
- 电池技术 电池技术
背景情况:
- 电解质化学对于金属电池 (LMB) 的发展至关重要.
- 现有的电解质在LMB中面临着稳定性和性能方面的挑战.
研究的目的:
- 开发一种新的策略,为LMBs创造多功能电解质添加剂.
- 通过在现场生成的添加剂来增强LMB的稳定性和电化学性能.
主要方法:
- 在碳酸盐电解质中的1,3-dimethylimidazolium二甲基 (DIDP) 和三甲基三乙酸 (TMSF) 的现场转化.
- 作为添加剂生成二甲基三甲基酸盐 (DTMSP) 和1,3-二甲基利米达三乙酸盐 (DITFA).
- 使用新型电解质配方对LMB进行电化学性能测试.
主要成果:
- DTMSP有效地去除H2O和HF,提高了电解质的抗湿性和阴极稳定性.
- DITFA 增强酸溶解,优化 Li+ 溶解和运输.
- DTMSP和DITFA的优先氧化还原分解形成了P/N/Si丰富的保护性阴极层和有机丰富的阳极层 (Li3N/Li3P).
- 在修改后的LMB中实现了优异的电化学性能.
结论:
- 人工转化是一种有效的策略,用于为高性能LMBs创建先进的电解质添加剂.
- 产生的DTMSP和DITFA添加剂通过形成保护性接口层,显著提高了电解质稳定性和电池性能.
相关概念视频
Batteries and Fuel Cells
27.3K
A battery is a galvanic cell that is used as a source of electrical power for specific applications. Modern batteries exist in a multitude of forms to accommodate various applications, from tiny button batteries such as those that power wristwatches to the very large batteries used to supply backup energy to municipal power grids. Some batteries are designed for single-use applications and cannot be recharged (primary cells), while others are based on conveniently reversible cell reactions that...
27.3K
Reduction of Alkynes to trans-Alkenes: Sodium in Liquid Ammonia
9.2K
Alkynes can be reduced to trans-alkenes using sodium or lithium in liquid ammonia. The reaction, known as dissolving metal reduction, proceeds with an anti addition of hydrogen across the carbon–carbon triple bond to form the trans product. Since ammonia exists as a gas (bp = −33°C) at room temperature, the reaction is carried out at low temperatures using a mixture of dry ice (sublimes at −78°C) and acetone.
When dissolved in liquid ammonia, an alkali metal,...
When dissolved in liquid ammonia, an alkali metal,...
9.2K


