优化水性硫电池的性能通过调节乙合溶剂和碳纳米管载体

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Zhenqiang Ge¹, Hangning Liu¹, Shan Wang¹

¹Qingdao Engineering Research Center of Agricultural Recycling Economy Materials, College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao, 266109, P. R. China.

|October 21, 2024

概括

研究人员开发了一种新的混合电解质和硫阴极,用于可充电的水性硫电池 (AZSB). 这种设计通过改善反应动力学和防止聚硫化物穿效应来提高电池性能.

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
储能储能储能储能储能储能

背景情况:

可充电的水性硫电池 (AZSB) 提供高能量密度和安全性.
关键的挑战包括缓慢反应动力学和聚硫化物穿效应,阻碍了实际应用.

研究的目的:

通过优化阴极和电解质材料来提高AZSB性能.
开发一种新的有机-无机混合电解质和功能化的硫阴极.

主要方法:

设计了一种有机-无机混合电解质 (AN-3),使用三甲硫酸盐和在阿尼/水辅溶剂中.
准备了一个在部分脱皮的多壁碳纳米管 (S@PECNTs) 上托管的硫阴极.
研究了电解质和阴极对电池性能的协同作用.

主要成果:

该AN-3电解质抑制了的演变,并促进了均的剥离/.
S@PECNTs 阴极表现出高硫分散和适当的湿透性.
开发的AZSB实现了1370mAhg-1的高放电容量,具有79.9%的库伦比效率.
证明了出色的速度能力和循环稳定性.

结论:

在S@PECNTs阴极和AN-3电解质之间的协同效应显著改善了反应动力学和抑制了聚硫化物穿.
这项工作为开发高性能AZSB提供了一个有前途的战略.

关键词:

水性硫电池的电池是水性硫电池.阴极的修改阴极的修改电化学电池的性能电化学电池的性能优化固体/液体接口属性的优化有机/无机混合电解质设计

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