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通过现场光电化学工程启用光辅助金属阳极

Weizhai Bao^1,2, Ronghao Wang¹, Chengfei Qian¹

¹Institute of Advanced Materials and Flexible Electronics (IAMFE), School of Chemistry and Materials Science, Nanjing University of Information Science and Technology, Nanjing, 210044, China.

Small (Weinheim an der Bergstrasse, Germany)

|October 19, 2023

概括

这项研究引入了一种光辅助的金属阳极,可以防止树突并稳定固体电解质接口 (SEI) 层. 这项创新提高了可充电金属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
储能储能储能储能储能储能

背景情况:

高能量密度的可充电电池对于现代技术至关重要.
金属阳极具有较高的理论容量,但由于树突形成和不稳定的固体电解质接口 (SEI) 层而受到影响.
现有的金属阳极稳定性的解决方案对于下一代电池来说是不够的.

研究的目的:

开发一种新的方法来稳定金属阳极,使用现场光电化学工程.
为了改善金属阳极的电化学沉积行为和循环寿命.
为了实现高性能金属电池的商业化.

主要方法:

制造具有增强光电化学性能的定制复合光电极.
在现场的光电化学工程指导沉积,并在照明下稳定SEI层.
系统地研究形成和光催化机制,使用DFT计算,现场UV-vis和现场XPS表征.

主要成果:

光辅助阳极展示了受控的沉积,防止了专门的电流收集器上的树突.
在照明下实现了现场SEI稳定,显著改善了阳极稳定性.
复合光电极支持超高电流密度 (15 mA cm−2) 和循环容量 (15 mAh cm−2) 的低电压歇斯底里.

结论:

量身定制的复合光电极有效抑制树突,并通过光电化学工程稳定SEI层.
光辅助金属阳极表现出卓越的性能和稳定性,为先进的可充电电池技术铺平了道路.
这项工作在下一代金属电池的商业可行性方面取得了重大进展.

关键词:

有助于照明的光照.金属阳极是一种金属阳极.摄影阳极是指光电阳极.光电化学工程的工程学可以充电的金属电池.

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