用于本质安全的高压离子电池的非易燃的基于苏奇尼尼特的深度环节性电解质
Jian Chen1,2, Zhuo Yang2,3, Xu Xu2,3
1School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, China.
Advanced materials (Deerfield Beach, Fla.)
|April 12, 2024
概括
这项研究引入了一种更安全,更高性能的离子电池深电解质,用于使用succinonitrile和DTD. 这项创新增强了电池的安全性和稳定性,可以在各种温度下使用.
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
- 储能 储能 储能 储能 储能 储能
背景情况:
- 离子电池对于大规模储能至关重要.
- 传统的电解质由于易燃性而带来安全风险.
- 需要内在安全和高性能电解质.
研究的目的:
- 为离子电池开发一种安全且电化学稳定的深度环氧电解质.
- 为了提高基于succinonitrile (SN) 的电解质的安全性和性能.
- 为了研究1,3,2-二氧二氧化 (DTD) 在电解质配方中的作用.
主要方法:
- 使用苏奇尼尼特里尔 (SN) 和1,3,2-二氧-2-二氧化物 (DTD) 制备一种深度环氧电解质.
- 调查SN和DTD之间的键相互作用.
- 对围绕Na+离子的溶解结构的分析.
- 在不同温度下对半电池和全电池进行电化学测试.
主要成果:
- 这种深层的解电解质表现出增强的安全性和兼容性.
- DTD削弱了SN在Na+周围的协调,促进了稳定的有机丰富的间相.
- 半细胞显示稳定循环,在25°C的800个循环后保持82.8%的容量,在60°C的100个循环后保持86.3%.
- 全细胞在循环稳定性和速率性能方面表现出显著的改进.
结论:
- 拟议的深度环氧电解质策略有效地提高了基于SN的离子电池的安全性和电化学性能.
- 独特的溶解配置和由此产生的间相是稳定的电池运行的关键.
- 这种方法为开发内在安全的大规模能源存储解决方案提供了一个有希望的途径.
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