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Non-Drying Hydrogel Polyelectrolytes via Polymer-Assisted Cation Solvation-Confinement Toward H2O for Ultrahigh-Voltage Aqueous Micro-Supercapacitors

文献类型：期刊论文

作者Jin, Xuting2; Song, Li1; Li, Meng2; Lai GB(赖国彬)5; Quan, Zhonggui1; Li, Xiangyang4; Xiu, Xinyi2; Tang, Bin2; Liu F(刘峰)5; Qu, Liangti3
刊名ADVANCED MATERIALS
出版日期2025-07-23
页码18
关键词confinement of water molecules high voltage micro-supercapacitors non-drying hydrogel polymer-assisted cation solvation
ISSN号0935-9648
DOI10.1002/adma.202509050
通讯作者Song, Li(lisongtju@zzu.edu.cn) ; Liu, Feng(liufeng@imech.ac.cn) ; Qu, Liangti(lqu@mail.tsinghua.edu.cn) ; Zhou, Zhen(zhenzhou@zzu.edu.cn)
英文摘要Conventional hydrogel electrolytes often encounter challenges such as poor water retention and a limited electrochemical window due to inadequate control over water molecules, leading to a low operational voltage and an undesirable low energy density of pure aqueous micro-supercapacitors (MSCs). Herein, a polymer-assisted cation solvation-confinement strategy is presented to enhance both water retention and the electrochemical window of poly(acrylamide-hydroxypropyl acrylate) (PAM-HPA) polyelectrolytes. Remarkably, PAM-HPA polyelectrolytes, without any organic additives, exhibit no water evaporation after over 3.5 months of air exposure at room temperature. Owing to the strong confinement toward H2O in PAM-HPA polyelectrolyte, activated carbon-based aqueous symmetric MSCs achieve a record-breaking voltage of 2.5 V and the highest areal energy density of 187.9 mu Wh cm-2 among all reported pure aqueous carbon-based MSCs. Even coupling with low-voltage MXene-based microelectrodes, the microdevice still maintains a high voltage exceeding 2 V, a significant areal energy density, and an ultra-long cycle life. Impressively, after exposing PAM-HPA polyelectrolytes to an oven at 60 degrees C for 24 h, the constructed MSCs retain nearly 90% of their capacitance compared to non-heat-treated polyelectrolytes. This work introduces a novel approach for developing non-drying polyelectrolytes with a wide electrochemical window, boosting the development of high-performance and safe micro-power sources.
分类号一类
WOS关键词ENERGY ; ELECTROLYTE ; FABRICATION
资助项目National Natural Science Foundation of China ; National Natural Science Foundation of China (NSFC)[22479130] ; Natural Science Foundation of Henan[252300421170] ; China Postdoctoral Science Foundation[2023M743150] ; [22109009]
WOS研究方向Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
语种英语
WOS记录号WOS:001533841800001
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China (NSFC) ; Natural Science Foundation of Henan ; China Postdoctoral Science Foundation
其他责任者Song, Li，刘峰，Qu, Liangti，Zhou, Zhen
源URL[http://dspace.imech.ac.cn/handle/311007/102313]  
专题力学研究所_非线性力学国家重点实验室
作者单位1.Zhengzhou Univ, Henan Inst Adv Technol, Zhengzhou 450001, Peoples R China;
2.Zhengzhou Univ, Interdisciplinary Res Ctr Sustainable Energy Sci &, Sch Chem Engn, Zhengzhou 450001, Peoples R China;
3.Tsinghua Univ, Dept Chem, Minist Educ, Key Lab Organ Optoelect & Mol Engn, Beijing 100084, Peoples R China
4.Beijing Inst Technol, Key Lab Photoelect Electrophoton Convers Mat, Sch Chem & Chem Engn, Key Lab Cluster Sci,Minist Educ China, Beijing 100081, Peoples R China;
5.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China;
推荐引用方式
GB/T 7714		 Jin, Xuting,Song, Li,Li, Meng,et al. Non-Drying Hydrogel Polyelectrolytes via Polymer-Assisted Cation Solvation-Confinement Toward H2O for Ultrahigh-Voltage Aqueous Micro-Supercapacitors[J]. ADVANCED MATERIALS,2025:18.
APA Jin, Xuting.,Song, Li.,Li, Meng.,赖国彬.,Quan, Zhonggui.,...&Zhou, Zhen.(2025).Non-Drying Hydrogel Polyelectrolytes via Polymer-Assisted Cation Solvation-Confinement Toward H2O for Ultrahigh-Voltage Aqueous Micro-Supercapacitors.ADVANCED MATERIALS,18.
MLA Jin, Xuting,et al."Non-Drying Hydrogel Polyelectrolytes via Polymer-Assisted Cation Solvation-Confinement Toward H2O for Ultrahigh-Voltage Aqueous Micro-Supercapacitors".ADVANCED MATERIALS (2025):18.

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来源：力学研究所

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