利用有机电解质来制造无腐蚀性和宽温度的Na-Cl电池2
Qiuchen Xu1, Shanshan Tang1, Nachuan Li1
1Frontiers Science Center for Transformative Molecules, School of Chemistry and Chemical Engineering, Zhangjiang Institute for Advanced Study, Shanghai Jiao Tong University, Shanghai, China.
Nature communications
|February 24, 2025
概括
研究人员使用甲基二乙酸盐开发了一种用于可充电 (Na-Cl2) 电池的非腐蚀性电解质,可用于电网储能和可穿戴应用的高性能和稳定性.
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:
- 可充电 (Na-Cl2) 电池为电网储能提供高电化学性能.
- 基于腐蚀性硫乙烯化物 (SOCl) 的电解质限制了Na-Cl电池的实际应用.
研究的目的:
- 为高性能可充电Na-Cl电池开发一种非腐蚀性电解质替代SOCl.
- 为了研究Na-Cl电池的电化学性能,稳定性和潜在应用,使用新的电解质.
主要方法:
- 使用甲基二乙酸盐,化和 bis ((fluorosulfonyl) imide) 的来制备一种非腐蚀性电解质.
- 评估了电化学性能,包括可逆容量,放电电压和在广泛的温度范围内循环稳定性.
- 电解质适用于光纤电池的适用性被评估为可穿戴应用.
主要成果:
- 新的电解质使100mAg-1的可逆容量达到1200mAhg-1的可逆容量,放电电压为2.5V.
- 该电池在-40°C下经历了700个周期的稳定循环,并在-40°C至80°C之间有效运行.
- 性能超过了传统的Na-Cl2和最先进的Na金属电池,并成功集成到光纤电池中.
结论:
- 甲基二乙酸盐作为可充电Na-Cl电池的可行的非腐蚀性替代电解质.
- 开发的系统表现出优异的电化学性能,宽泛的温度耐受性和长期稳定性,适用于电网存储和可穿戴设备.
- 基于捐赠者数和电荷转移的有机电解质的设计原则被建议用于未来的Na-Cl电池开发.
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