通过晶体学定向操纵等级Zn阳极.
Jinqiu Zhou1, Baojiu Hao1, Yuan Meng1
1School of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China.
Nano letters
|November 3, 2023
概括
一种新型平衡剂 (1,4-丁二醇) 有效地抑制了水性金属电池 (ZMB) 中的树生长和腐蚀. 这一创新提高了电池的稳定性和可逆性,用于大规模的储能应用.
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:
- 水性金属电池 (ZMB) 面临着在Zn阳极的树生长和腐蚀的挑战,这限制了它们的可逆性和可扩展性.
- 这些问题阻碍了ZMB在大型能源存储解决方案中的广泛采用.
研究的目的:
- 调查低成本平面化剂 (LEA) 1,4-丁二醇的使用,以减轻Zn金属阳极中的树突形成和腐蚀.
- 通过对电极的表面修改,提高水性ZMB的稳定性和可逆性.
主要方法:
- 理论计算和现场实验性表征以研究LEA吸附及其对沉积的影响.
- 在对称和完整的ZMB细胞中使用1,4-丁二醇作为电解质添加剂.
主要成果:
- 在特定的格子平面上,LEA分子的优先吸附引导了晶体学方向,抑制了 Zn 树突的生长.
- 通过LEA吸附,有效地防止了Zn金属表面的不良腐蚀.
- 带有LEA添加剂的对称和完整的ZMB细胞显著改善了稳定性和可逆性.
结论:
- 1,4-丁二醇作为有效的添加剂,可以平衡沉积,抑制树突,并防止水性ZMB中的腐蚀.
- 这项研究提供了将电添加剂引入ZMB的新策略,指导电解质添加剂的选择.
- 这些发现对改善电池中的其他金属阳极系统有潜在的影响.
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