An intrinsically self-healing and anti-freezing molecular chains induced polyacrylamide-based hydrogel electrolytes for zinc manganese dioxide batteries  

作　　者：Haiyang Liao Wenzhao Zhong Chen Li Jieling Han Xiao Sun Xinhui Xia Ting Li Abolhassan Noori Mir F.Mousavi Xin Liu Yongqi Zhang 

机构地区：[1]Institute of Fundamental and Frontier Sciences,University of Electronic Science and Technology of China,Chengdu 611731,Sichuan,China [2]School of Mechanical Engineering,Hunan University of Technology,Zhuzhou 412007,Hunan,China [3]School of Materials Science and Engineering,Zhejiang University of Technology,Hangzhou 310014,Zhejiang,China [4]Department of Chemistry,Faculty of Basic Sciences,Tarbiat Modares University,Tehran 14117-13116,Iran [5]State Key Laboratory of New Textile Materials and Advanced Processing Technologies,Wuhan Textile University,Wuhan 430200,Hubei,China

出　　处：《Journal of Energy Chemistry》2024年第2期565-578,I0013,共15页能源化学（英文版）

基　　金：supported by the link project of the National Natural Science Foundation of China(52002052 and 22209020);the Key Research and Development Project of Science and Technology Department of Sichuan Province(2022YFSY0004);the Opening project of the State Key Laboratory of New Textile Materials and Advanced Processing Technology(FZ2021009);the Natural Science Foundation of Sichuan Province(2023NSFSC0995);the Natural Science Foundation of Hunan Province(2022JJ30227)。

摘　　要：The anti-freezing strategy of hydrogels and their self-healing structure are often contradictory,it is vital to break through the molecular structure to design and construct hydrogels with intrinsic anti-freezing/self-healing for meeting the rapid development of flexible and wearable devices in diverse service conditions.Herein,we design a new hydrogel electrolyte(AF/SH-Hydrogel)with intrinsic anti-freezing/self-healing capabilities by introducing ethylene glycol molecules,dynamic chemical bonding(disulfide bond),and supramolecular interaction(multi-hydrogen bond)into the polyacrylamide molecular chain.Thanks to the exceptional freeze resistance(84%capacity retention at-20℃)and intrinsic self-healing capabilities(95%capacity retention after 5 cutting/self-healing cycles),the obtained AF/SH-Hydrogel makes the zinc||manganese dioxide cell an economically feasible battery for the state-of-the-art applications.The Zn||AF/SH-Hydrogel||MnO_(2)device offers a near-theoretical specific capacity of 285 m A h g^(-1)at 0.1 A g^(-1)(Coulombic efficiency≈100%),as well as good self-healing capability and mechanical flexibility in an ice bath.This work provides insight that can be utilized to develop multifunctional hydrogel electrolytes for application in next generation of self-healable and freeze-resistance smart aqueous energy storage devices.

关 键 词：Flexible aqueous battery Hydrogel electrolyte ANTI-FREEZING SELF-HEALING Dual-dynamic reversible bond 

分 类 号：TM912[电气工程—电力电子与电力传动] O646.1[理学—物理化学] TQ427.26[理学—化学]