Fabricating ion-conducting channel in SU-8 matrix for highperformance patternable polymer electrolytes  

作　　者：Tianzhao Li Xuelei Pan Zhongzhuo Yang Fang Liu Kesong Yu Lin Xu Liqiang Mai 

机构地区：[1]State Key Laboratory of Advanced Technology for Materials Synthesis and Processing,Wuhan University of Technology,Wuhan 430070,China

出　　处：《Nano Research》2023年第1期496-502,共7页纳米研究（英文版）

基　　金：This work was supported by the National Key Research and Development Program of China(No.2020YFA0715000);the National Natural Science Foundation of China(Nos.51802239,51832004);Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory(Nos.XHT2020-005,XHT2020-003);the Innovation and Entrepreneurship Training Program of School of Materials Science and Engineering,Wuhan University of Technology(No.CY202031).

摘　　要：Advances in electrochemical energy storage technologies drive the need for battery safety performance and miniaturization,which calls for the easily processable polymer electrolytes suitable for on-chip microbattery technology.However,the low ionic conductivity of polymer electrolytes and poor-patternable capabilities hinder their application in microdevices.Herein,we modified SU-8,as the matrix material,by poly(ethylene oxide)(PEO)with lithium salts to obtain a patternable lithium-ion polymer electrolyte.Due to the highly amorphous state and more Li-ion transport pathways through blending effect and the increase in number of epoxides,the ionic conductivity of achieved sample is increased by an order of magnitude to 2.9×10^(−4) S·cm^(−1) in comparison with the SU-8 sample at 50°C.The modified SU-8 exhibits good thermal stability(>150°C),mechanical properties(elastic modulus of 1.52 GPa),as well as an electrochemical window of 4.3 V.Half-cell and microdevice were fabricated and tested to verify the possibility of the micro-sized on-chip battery.All of these results demonstrate a promising strategy for the integration of on-chip batteries with microelectronics.

关 键 词：polymer electrolytes patternable electrolytes on-chip battery lithium-ion battery 

分 类 号：O63[理学—高分子化学]