通过散装/液体双相调制抑制的树生长
Xin Dong1, Ziqin Liu1, Kaiquan He1
1School of Materials Science and Engineering & Hubei Key Laboratory of Plasma Chemistry and Advanced Materials, Wuhan Institute of Technology, Wuhan 430205, China.
Journal of colloid and interface science
|June 12, 2023
概括
研究人员使用BiOI纳米片开发了一种新的金属阳极 (BiOI@Li). 这种材料通过双重散装和液体调制来控制树石的生长,提高了电池的性能和安全性.
科学领域:
- 材料科学 材料科学 材料科学
- 电化学 电化学 电化学
- 电池技术 电池技术
背景情况:
- 金属阳极提供高能量密度,但受到树增长的影响,影响性能和安全性.
- 开发稳定的金属阳极对于下一代高能量密度电池至关重要.
研究的目的:
- 设计一种具有更好的电化学性能和安全性的金属阳极.
- 为了减轻树状石的形成和增强循环稳定性.
主要方法:
- 通过和BiOI纳米片之间的反应在现场生成Li3Bi/Li2O/LiI填充剂.
- 制造BIOI@Li阳极和对称电池和完整的Li-S电池的评估.
主要成果:
- 由于散装/液体双调制,BIOI@Li阳极表现出良好的电化学性能.
- 一个基于3D Bi的框架减少了当地的电流密度,并适应了体积变化.
- 在现场生成的LiI重新激活了不活跃的物种,提高了稳定性.
- BiOI@Li//BiOI@Li对称细胞在600小时内表现出低超电位和稳定循环.
- 带有BiOI@Li阳极的全Li-S电池表现出良好的速率能力和循环稳定性.
结论:
- 开发的BiOI@Li阳极有效抑制树突,提高电池性能.
- 双调制策略为设计稳定的金属阳极提供了一个有希望的方法.
- 这项工作有助于推进高能量密度电池技术的发展.
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