Highly stable Li^(+) deposition guided by a lithiophilic microchannel  

作　　者：Fuliang Xu Shuling Fan Zhongcheng Sun Yang Peng Qikai Wang Fangmin Ye 

机构地区：[1]Zhejiang Key Laboratory of Quantum State Control and Optical Field Manipulation,Department of Physics,Zhejiang Sci-Tech University,310018,Hangzhou,China

出　　处：《Materials Reports(Energy)》2025年第1期70-76,共7页材料导报(能源)(英文)

基　　金：supported by the Science Foundation of Zhejiang Sci-Tech University(18062299-Y)。

摘　　要：The repeated volume variation of lithium(Li)metal anode(LMA)upon Li^(+) plating/stripping,the volatile interface between Li and the electrolyte,and the incessant growth of Li dendrites on Li metal surface have severely hindered the practical application of Li in constructing high energy-density Li metal batteries(LMBs).Herein,a novel Li host(3D ZnO/CNTs/Cu)featuring ordered microchannels and lithiophilic ZnO species on the inner walls of the microchannels is introduced,which induces the uniform Li^(+) deposition into the microchannels and finally suppresses the formation of Li dendrites.The stable structure of the fabricated 3D Li host can adapt to volume variations upon Li^(+) plating/stripping,thereby enhancing electrochemical performances.Symmetric cells with the 3D ZnO/CNTs/Cu@Li anode exhibited long cycle stability at areal current densities of 0.5 and 2 mA cm^(-2);Full cells maintained a reversible discharge capacity of 105 mAh g^(-1) after 400 cycles at 1C with a capacity retention of 70%.Meanwhile,ex-situ SEM observations proved that the 3D ZnO/CNTs/Cu@Li anode can keep the structural integrity during charging/discharging(or plating/stripping).This work suggested that lithiophilic nanochannels in the Li host can significantly improve the electrochemical performance and safety of LMBs.

关 键 词：Lithium metal battery Uniform Li^(+)deposition 3-Dimensional Li host Lithiophilic microchannel 

分 类 号：TB3[一般工业技术—材料科学与工程]