Tuning composite solid-state electrolyte interface to improve the electrochemical performance of lithium-oxygen battery  

作　　者：Hao Ouyang Shan Min Jin Yi Xiaoyu Liu Fanghua Ning Jiaqian Qin Yong Jiang Bing Zhao Jiujun Zhang 

机构地区：[1]School of Environmental and Chemical Engineering,Shanghai University,Shanghai,200444,China [2]Institute for Sustainable Energy/College of Sciences,Shanghai University,Shanghai,200444,China [3]Center of Excellence in Responsive Wearable Materials,Metallurgy and Materials Science Research Institute,Chulalongkorn University,Bangkok,10330,Thailand

出　　处：《Green Energy & Environment》2023年第4期1195-1204,共10页绿色能源与环境（英文版）

基　　金：the partial financial support from the National Natural Science Foundation of China (22075171,21805182 and 22179080)。

摘　　要：Thin and flexible composite solid-state electrolyte(SSE) is considered to be a prospective candidate for lithium-oxygen(Li-O_(2)) batteries with the aim to address the problems of unsatisfied safety, terrible durability as well as inferior electrochemical performance. Herein, in order to improve the safety and durability, a succinonitrile(SN) modified composite SSE is proposed. In this SSE, SN is introduced for eliminating the boundary between ceramic particles, increasing the amorphous region of polymer and ensuring fast ionic transport. Subsequently, the symmetric battery based on the proposed SSE achieves a long cycle life of 3000 h. Moreover, the elaborate cathode interface through the SN participation effectively reduces the barriers to the combination between lithium ions and electrons, facilitating the corresponding electrochemical reactions.As a result, the solid-state Li-O_(2)battery based on this SSE and tuned cathode interface achieves improved electrochemical performance including large specific capacity over 12,000 m Ah g^(-1), enhanced rate capacity as well as stable cycle life of 54 cycles at room temperature. This ingenious design provides a new orientation for the evolution of solid-state Li-O_(2)batteries.

关 键 词：Solid-state Li-O_(2)battery Composite electrolyte Cathode interface Room temperature SUCCINONITRILE 

分 类 号：TM911.41[电气工程—电力电子与电力传动]