一个通过性Al-air电池的电解质添加剂诱导的自我调节的屏蔽层
Lei Guo1,2, Yongbiao Huang3, Ida Ritacco4
1School of Material and Chemical Engineering, Tongren University Tongren 554300 China chygl@gztrc.edu.cn.
RSC advances
|October 15, 2024
概括
乙二胺乙酸二盐 (EDTA-2Na) 添加到水性空气电池 (AAB) 中可以抑制寄生反应. 这大大提高了电池的性能,增加了容量密度和阳极利用率.
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:
- 水性空气电池 (AAB) 提供高能量密度,但性能下降.
- 关键问题包括阳极的自我腐蚀,被动化和进化.
研究的目的:
- 通过减轻寄生反应来提高AAB的性能.
- 为了研究乙烯二胺三酸二盐 (EDTA-2Na) 作为电解质添加剂的疗效.
主要方法:
- 将EDTA-2Na添加到AAB的性电解质中.
- 测量的进化速度.
- 电化学性能测试 (抑制效率,放电测试).
- 阳极的表面特征.
主要成果:
- 添加EDTA-2Na显著降低了超过50%的进化率.
- 电化学试验显示,对寄生虫反应的抑制效率为55%.
- 全细胞放电测试显示,特定容量密度 (943.6至2381.7 mA hg-1) 和阳极利用率 (31.6%至80.9%) 显著增加.
结论:
- EDTA-2Na有效地被动化了Al阳极,抑制了水诱导的寄生反应.
- 使用EDTA-2Na进行电解质修饰是开发高性能AAB的一个有希望的策略.
- 该研究强调了阳极/电解质接口控制对先进的储能系统的重要性.
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