一个三明治结构的EVA/Cu2O/Cu复合电流采集器,以抑制树突的生长
Xianli Huang1, Hui Yang1, Zhongzheng Zuo1
1College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, 211106, Nanjing, Jiangsu Province, People's Republic of China.
Chemistry, an Asian journal
|November 21, 2024
概括
研究人员开发了一种新型的电流收集器,以防止金属电池中的树生长. 这种新设计增强了沉积的均性,导致更稳定,更持久的储能电池.
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
- 储能 储能 储能 储能 储能 储能
背景情况:
- 树的扩散是金属电池采用的主要障碍.
- 有效地缓解树的生长对于推进储能解决方案至关重要.
研究的目的:
- 开发一种新型的电流收集器,以抑制树形成.
- 为了提高金属阳极的稳定性和循环寿命.
主要方法:
- 一个三明治结构的电流采集器的制造:乙烯-乙酸乙烯聚合物 (EVA) /Cu2O/Cu.
- 使用EVA作为防护屏障和Cu2O来促进性位.
- 使用新型电流采集器对Li-Cu半电池进行电化学测试.
主要成果:
- 该EVA薄膜有效地使金属阳极被动,并防止电解质反应.
- 观察到均的沉积和增强的Li+离子流动性.
- 在50个循环后,减少了极化潜力和降低了电化学电阻.
- 证明了Li-Cu半细胞的显著延长周期寿命.
结论:
- 新型的EVA/Cu2O/Cu三明治结构的电流收集器有效地抑制了树突.
- 这种架构促进了统一的沉积,并提高了电池的稳定性.
- 开发的电流收集器是长期持久金属阳极的有希望的策略.
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