多组功能添加剂增强离子电池在广泛温度范围内的性能
Weizhen Fan1, Jian Cai1, Wenlian Wang2
1School of Chemistry, South China Normal University, Guangzhou 510006, P.R. China.
ACS applied materials & interfaces
|February 12, 2026
概括
一种新的电解质添加剂,三甲基氧硫酸 (TMBS),在广泛的温度范围内显著提高了离子电池的性能. 这种TMBS添加剂增强了NaNi0.33Fe0.33Mn0.33O2/硬碳电池的稳定性并抑制了副作用.
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:
- 离子电池 (SIB) 对大规模储能充满希望.
- SIB 的性能通常受到电解质稳定性和副作用的限制,特别是在极端温度下.
- 开发先进的电解质对于改善SIB运行范围和寿命至关重要.
研究的目的:
- 开发一种功能性电解质添加剂,以提高NaNi0.33Fe0.33Mn0.33O2 (NFM) /硬碳 (HC) SIB 的性能.
- 为了研究三甲基氧硫酸盐 (TMBS) 对电池性能在广泛的温度范围 (-30至60°C) 的影响.
- 为高性能袋式SIB建立一个增材设计原则.
主要方法:
- 一种新的电解质添加剂TMBS的合成和表征.
- 使用含有TMBS电解质的NFM/HC SIB进行电化学测试.
- 与无添加剂和单功能添加剂电解质 (MS,MBS) 的比较分析.
- 在各种条件下评估电池性能:过度放电,速率能力,在不同温度 (-30,-10,45,60°C) 的循环稳定性.
主要成果:
- TMBS添加剂有效地抑制了阳极的副作用.
- 在广泛的温度范围内,TMBS促进了强大的阴极-电解质介相 (CEI) 的形成.
- 含有TMBS的电池在60°C的过度放电测试中表现优异.
- 在45°C时观察到增强的速度能力和循环稳定性.
- 在-30°C下实现了更好的放电性能,并在-10°C下实现了优异的低温循环稳定性.
结论:
- 三甲基氧硫酸盐 (TMBS) 是一种有效的多组电解质添加剂,用于NFM/HC SIBs.
- TMBS在广泛的温度范围内显著提高了电池性能和稳定性.
- 该研究为开发先进的袋式SIB提供了一个有价值的添加剂设计策略.
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