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离子液体的人工间相 (EMIMTFSI) 用于高性能水性Zn-I电池

Cheng Wang¹, Tao Lv¹, Zhou Tong¹

¹State Key Laboratory of Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center For Advanced Materials (SICAM), Nanjing University of Posts & Telecommunications, Nanjing, China.

Chemistry (Weinheim an der Bergstrasse, Germany)

|December 22, 2025

概括

在阳极上的保护性离子液体膜 (IL@Zn) 防止在水性Zn-I2电池中的树生长和腐蚀. 这提高了电池周期寿命和稳定性,解决了关键性能限制.

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

背景情况:

水性Zn-I2电池面临着诸如树状物生长和聚酸穿效应等挑战,限制了其循环寿命.
这些问题导致电池腐蚀和容量衰减,阻碍了实际应用.

研究的目的:

为阳极开发保护膜,以提高水性Zn-I2电池的循环寿命和稳定性.
为了研究保护膜抑制树突生长和聚酸穿的机制.

主要方法:

在阳极上使用1 - 乙-3 - 甲基利米达二氧化 (Trifluoromethanesulfonyl) imide (EMIMTFSI) 离子液体通过磁带造构建了一个多功能保护膜 (IL@Zn).
评估了IL@Zn对称和Zn-I2全细胞的性能,包括循环稳定性,库伦比效率和容量保留.

主要成果:

IL@Zn对称细胞在5.0mA cm-2.0下表现出超过350小时的稳定循环.
具有IL@Zn阳极的Zn-I2全细胞在2Ag-1的2000个循环后保持了82%的容量.
保护膜有效地抑制了树突的生长,并减轻了聚化的穿效应,减少了 Zn 腐蚀.

结论:

开发的IL@Zn保护膜是改善水性Zn-I2电池性能的一种简单而有效的策略.
这种方法成功地解决了树岩形成和穿效应的关键挑战,为更耐用的基电池铺平了道路.

关键词:

在 Zn 阳极上,水性Zn-I2电池的使用情况压制树,抑制树.离子-液体相间阶段聚酸的航天飞机.

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