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

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

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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 con-ditions.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 applica-tions.The Zn‖AF/SH-Hydrogel‖MnO2 device offers a near-theoretical specific capacity of 285 mA h g-1 at 0.1 Ag-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 elec-trolytes for application in next generation of self-healable and freeze-resistance smart aqueous energy storage devices.

Flexible aqueous batteryHydrogel electrolyteAnti-freezingSelf-healingDual-dynamic reversible bond

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

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Institute of Fundamental and Frontier Sciences,University of Electronic Science and Technology of China,Chengdu 611731,Sichuan,China

School of Mechanical Engineering,Hunan University of Technology,Zhuzhou 412007,Hunan,China

State Key Laboratory of New Textile Materials and Advanced Processing Technologies,Wuhan Textile University,Wuhan 430200,Hubei,China

School of Materials Science and Engineering,Zhejiang University of Technology,Hangzhou 310014,Zhejiang,China

Department of Chemistry,Faculty of Basic Sciences,Tarbiat Modares University,Tehran 14117-13116,Iran

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link project of the National Natural Science Foundation of Chinalink project of the National Natural Science Foundation of ChinaKey Research and Development Project of Science and Technology Department of Sichuan ProvinceOpening project of the State Key Laboratory of New Textile Materials and Advanced Processing TechnologyNatural Science Foundation of Sichuan ProvinceNatural Science Foundation of Hunan Province

52002052222090202022YFSY0004FZ20210092023NSFSC09952022JJ30227

2024

10.1016/j.jechem.2023.10.017

能源化学
中国科学院大连化学物理研究所 中国科学院成都有机化学研究所

能源化学

CSTPCDEI
影响因子：0.654
ISSN：2095-4956
年,卷(期)：2024.89(2)
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