Dendrite-free all-solid-state lithium batteries with lithium phosphorous oxynitride-modified lithium metal anode and composite solid electrolytes  

作　　者：Chunhua Wang Guoliang Bai Yifu Yang Xingjiang Liu Huixia Shao 

机构地区：[1]Hubei Key Lab.of Electrochemical Power Sources,College of Chemistry and Molecular Sciences,Wuhan University,Wuhan 430072,China [2]Anhui Province Key Laboratory of Optoelectron ic and Magnetism Functional Materials,Key Laboratory of Functional Coordination Compounds of Anhui Higher Education Institutes,Anqing Normal University,Anqing 246011,China [3]National Key Lab.of Power Sources,Tianjin Institute of Power Sources,Tianjin 300381,China

出　　处：《Nano Research》2019年第1期217-223,共7页纳米研究（英文版）

基　　金：the financial support of the National Natural Science Foundation of China (No. 21233004);Natural Science Foundation of Anhui Education Department (No. KJ2018A0372).

摘　　要：Dendrite formation on lithium (Li) metal anode is a key issue which hinders the development of rechargeable Li battery seriously. A novel method for suppress!ng Li dendrites via using Li phosphorous oxynitride (UPON) modified Li anode and Li1.5Al0.5Ge1.5(PO4)3-poly(ethylene oxide)(Li bistrifluoromethane-sulfonimide)(LAGP-PEO(LiTFSI)) composite solid electrolyte in all-solid-state Li battery is proposed, and the effect of the thickness of UPON on Li anode performarice is also studied. LiPON film with a thickness of 500 nm exhibits satisfactory interface property between Li metal anode and the LAGP-PEO(LiTFSI) solid electrolyte. The LiPON film provides a uniform Li^+ flux across the interface and effectively inhibits the formation of Li dendrites in all-solid-state Li batteries. The assembled all-solid-state Li cell Li(LiPON)/LAGP-PEO(LiTFSI)/LiFePO4 delivers an initial discharge capacity of 152.4 mAh·g^-1 and exhibits good cycling stability and rate performanee at 50 ℃.

关 键 词：LITHIUM metal anode LITHIUM DENDRITES Li phosphorous OXYNITRIDE (LiPON) composite solid electrolyte ALL-SOLID-STATE LITHIUM battery 

分 类 号：O4[理学—物理]