材料科学
阳极
电解质
电池(电)
储能
纳米技术
剥离(纤维)
电极
化学工程
电流密度
导线
枝晶(数学)
复合材料
化学
几何学
功率(物理)
物理化学
工程类
物理
数学
量子力学
作者
Yao Long,Shunlong Ju,Tongwen Xu,Wenbin Wang,Xuebin Yu
出处
期刊:ACS Nano
[American Chemical Society]
日期:2023-12-07
卷期号:17 (24): 25027-25036
标识
DOI:10.1021/acsnano.3c07611
摘要
Al batteries are promising post-Li battery technologies for large-scale energy storage applications owing to their low cost and high theoretical capacity. However, one of the challenges that hinder their development is the unsatisfactory plating/stripping of the Al metal anode. To circumvent this issue, an ultrathin MXene layer is constructed on the surface of Al by in situ chemical reactions at room temperature. The as-prepared flexible MXene film acts like armor to protect the Al-metal by its high ionic conductivity and high mechanical flexibility. The MXene endow the Al anode with a long cyclic life of more than 5000 h at ultrahigh current density of 50 mA cm-2 for Al//Al batteries and a retention of 100% over 200 cycles for 355 Wh kg-1 PTO//Al batteries. This work provides fresh insights into the formation and regulation of stable electrode-electrolyte interfaces as well as effective strategies for improving Al metal batteries.
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