Noncovalent cross-linked engineering hydrogel with low hysteresis and high sensitivity for flexible self-powered electronics  

作　　者：Hang Yuan Shaowei Han Jia Wei Songwei Li Peipei Yang Hao-Yang Mi Chuntai Liu Changyu Shen 

机构地区：[1]National Engineering Research Center for Advanced Polymer Processing Technology,Key Laboratory of Materials Processing and Mold(Ministry of Education),Zhengzhou University,Zhengzhou450002,Henan,China [2]Yunnan TobaccoQuality Inspection&Supervision Station,Kunming 650106,Yunnan,China

出　　处：《Journal of Energy Chemistry》2024年第7期136-147,共12页能源化学（英文版）

基　　金：the financial support from the National Natural Science Foundation of China (52002356);the China Postdoctoral Science Foundation (2020M672269);the National Key R&D program of China (2019YFA0706802)

摘　　要：In this study,the hydrogel network was reinforced by covalent-like hydrogen bonding,and the strong binding ability of boron-nitrogen coordination served as the main driving force.Among them,acrylamide(AM)and 3-acrylamidophenylboronic acid(AAPBA)were the main body,and the numerous hydroxyl groups in the trehalose(Treh)molecule and other polymer groups formed strong hydrogen bonding interactions to improve the mechanical properties of the PAM/PAAPBA/Treh(PAAT)hydrogel and ensured the simplicity of the synthesis process.The hydrogel possessed high strain at break(1239%),stress(64.7 kPa),low hysteresis(100%to 500%strain,corresponding to dissipation energy from 1.37 to 7.80 kJ/m^(3)),and outstanding cycling stability(retained more than 90%of maximum stress after 200 ten-sile cycles).By integrating carbon nanotubes(CNTs)into PAAT hydrogel(PAATC),the PAATC hydrogel with excellent strain response performance was successfully constructed.The PAATC conductive hydro-gel exhibited high sensitivity(gauge factor(GF)=10.58 and sensitivity(S)=0.304 kPa^(-1)),wide strain response range(0.5%-1000%),fast response time(450 ms),and short recovery time(350 ms),excellent fatigue resistance,and strain response stability.Furthermore,the PAATC-based triboelectric nanogener-ator(TENG)displayed outstanding energy harvesting performance,which shows its potential for appli-cation in self-powered electronic devices.

关 键 词：Low hysteresis Covalent-like hydrogen bonding Boron-nitrogen coordination Hydrogel sensor Triboelectric nanogenerator 

分 类 号：TQ427.26[化学工程] TM31[电气工程—电机]