用于水性电池中稳定的金属阳极的工程双层接口保护
Xue Chen1, Yujie Fu1, Shiwei Yan1
1College of Materials, Chemistry and Chemical Engineering, Chengdu University of Technology, 1#, Dongsanlu, Erxianqiao, Chengdu 610059, Sichuan, PR China.
Journal of colloid and interface science
|August 20, 2025
概括
研究人员开发了一种用于水性离子电池 (AAIB) 的阳极的新型保护接口. 这一进步显著提高了阳极稳定性和电池性能,克服了实际AAIB应用的关键挑战.
科学领域:
- 电化学
- 材料科学
- 能量储存
背景情况:
- 水性离子电池 (AAIB) 提供高能量密度,并利用丰富的资源.
- 金属阳极的实际应用受进化,腐蚀和被动化限制.
研究的目的:
- 为高性能AAIB开发一个稳定的Al金属阳极.
- 解决阻碍Al金属阳极实际使用的挑战.
主要方法:
- 在Al金属阳极上创建了双层人造保护接口.
- 结合了被刀片覆盖的活性碳 (AC) 层和电化学沉积的 (In) 颗粒层,形成了In-C混合层.
- 在对称和充满电池的In-C@Al电极中使用Mn3O4和六酸盐阴极进行了测试.
主要成果:
- In-C混合层有效地抑制了副作用并提高了阳极稳定性.
- 在C@Al对称的细胞表现出2000小时的稳定循环,超低的超电位 (<20mV).
- 充满的细胞具有高的特异容量 (146. 72 mAh g-1 在1 A g-1 的700 个循环后,保持率为90%) 和更好的循环性能.
结论:
- 开发的In-C混合层提供了稳定Al金属阳极的通用策略.
- 这种方法为开发高性能和稳定的AAIB铺平了道路.
- 这项研究强调了克服下一代电池的极局限性的重大进展.
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