Integrated interface configuration by in-situ interface chemistry enabling uniform lithium deposition in all-solid-state lithium metal batteries  

作　　者：Yu-Long Liao Jiang-Kui Hu Zhong-Heng Fu Chen-Zi Zhao Yang Lu Shuai Li Shi-Jie Yang Shuo Sun Xi-Long Wang Jia Liu Jia-Qi Huang Hong Yuan 

机构地区：[1]School of Materials Science&Engineering,Beijing Institute of Technology,Beijing 100081,China [2]Advanced Research Institute of Multidisciplinary Science,Beijing Institute of Technology,Bejing 100081,China [3]Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology,Department of Chemical Engineering,Tsinghua University,Bejing 100084,China [4]Beijing Key Laboratory of Lignocellulosic Chemistry,Beijing Forestry University,Beijing 100083,China

出　　处：《Journal of Energy Chemistry》2023年第5期458-465,I0011,共9页能源化学（英文版）

基　　金：supported by the Beijing Natural Science Foundation(L223009);the National Natural Science Foundation of China(22075029);the National Key Research and Development Program of China(2021YFB2500300);the Key Research and Development(R&D)Projects of Shanxi Province(2021020660301013)。

摘　　要：All-solid-state lithium metal batteries(ASSLMBs)are considered as one of the ultimate goals for the development of energy storage systems due to their high energy density and high safety.However,the mismatching of interface transport kinetics as well as interfacial instability induces the growth of lithium dendrite and thus,leads to severe degradation of battery electrochemical performances.Herein,an integrated interface configuration(IIC)consisting of in-situ generated Li I interphase and Li-Ag alloy anode is proposed through in-situ interface chemistry.The IIC is capable of not only regulating charge transport kinetics but also synchronously stabilizing the lithium/electrolyte interface,thereby achieving uniform lithium platting.Therefore,Li||Li symmetric cells with IIC achieve a critical current density of up to 1.6 mA cm^(-2)and achieve stable cycling over 1600 hours at a high current density of 0.5 mA cm^(-2).Moreover,a high discharge capacity of 140.1 mA h g-1at 0.1 C is also obtained for the Li(Ni_(0.6)Co_(0.2)Mn_(0.2))O_(2)(NCM622)full battery with a capacity retention of 65.6%after 300 cycles.This work provides an effective method to synergistically regulate the interface transport kinetics and inhibit lithium dendrite growth for high-performance ASSLMBs.

关 键 词：All-solid-state lithium battery Sulfide solid electrolyte Interface chemistry Lithium dendrite 

分 类 号：TM912[电气工程—电力电子与电力传动] TQ131.11[化学工程—无机化工]