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在稳定的 Zn 阳极中含有微量 taurine 平剂
Xin Zhang1, Kai Zheng2, Dingyi Hu2
1Fujian Power Transmission and Transformation Engineering Co., Ltd Fuzhou 350013 China.
RSC advances
|December 24, 2024
概括
在水性离子电池电解质中添加 taurine (TAU) 可以防止树的生长和副作用. 这提高了阳极的稳定性,并延长了电池的循环寿命,以实现更安全,更实用的能源存储.
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:
- 水性离子电池 (AZIB) 为下一代能源存储提供了成本效益,环保和安全性.
- 金属阳极的挑战阻碍了AZIB的实际应用,包括树突的形成和界面的副作用.
研究的目的:
- 引入氨酸 (TAU) 作为电解质添加剂,以提高AZIB中的阳极性能.
- 优化阳极微观结构和界面化学,以提高电池的稳定性和寿命.
主要方法:
- 在水性离子电池系统的电解质中加入微量氨酸 (TAU).
- 分析TAU对沉积微观结构和界面层形成的影响.
- 电化学测试Zn//Zn对称细胞,Zn//Cu不对称细胞和Zn//MnO2全细胞.
主要成果:
- 氨酸促进了稳定的界面层的在位形成,提炼了Zn沉积,并引导了均的Zn2+涂层.
- TAU 调节电解质结合,减少水的活性,抑制进化的副作用反应.
- Zn//Zn对称细胞在1150个循环 (1 mA cm-2) 和600个循环 (10 mA cm-2) 中实现; Zn//Cu细胞显示1400个循环 (1 mA cm-2),CE为99.4%.
结论:
- 氨酸通过优化阳极接口和电解质特性,有效地抑制了AZIB中的树突生长和接口副作用.
- 添加TAU显著提高了金属阳极的循环稳定性和coulombic效率.
- 这些发现为推进水性离子电池的工业可行性提供了强有力的战略.
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