一种电子绝缘的LiO保护层赋予Li-Cu-Zn三元合金复合阳极高性能。

An electron-insulating LiO protection layer endowing a Li-Cu-Zn ternary alloy composite anode with high performance.

作者信息

Yi Linyun, Wang Zihao, Chen Xiaoxiao, Xing Jianxiong, Huang Hao, Wei Chaohui, Zhao Qiang, Zhou Aijun, Li Jingze

机构信息

School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, P. R. China.

Huzhou Key Laboratory of Smart and Clean Energy, Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology of China, Huzhou 313001, P. R. China.

出版信息

Chem Commun (Camb). 2024 May 30;60(45):5832-5835. doi: 10.1039/d4cc00933a.

DOI:10.1039/d4cc00933a

PMID:38747248

Abstract

We report an electron-insulating layer of LiO nanoparticles passivating a Li-rich Li-Cu-Zn ternary alloy as an advanced Li anode. The insulating layer ensures Li deposition below the top protective layer and inhibits side reactions effectively. Additionally, the ternary alloy framework offers superior lithiophilicity and robust mechanical stability. Galvanostatic measurements demonstrate a prolonged lifespan of symmetric cells for over 1200 h at 1 mA cm and 1 mA h cm.

摘要

我们报道了一种由LiO纳米颗粒组成的电子绝缘层，它钝化了一种富锂的Li-Cu-Zn三元合金，作为一种先进的锂阳极。该绝缘层确保锂在顶部保护层下方沉积，并有效抑制副反应。此外，三元合金框架具有优异的亲锂性和强大的机械稳定性。恒电流测量表明，对称电池在1 mA cm和1 mA h cm下的寿命延长至超过1200小时。