标题: Stretchable, Adhesive, Anti-Freezing Hydrogel Electrolytes with Dual-Functional Water Regulation Enabled by Amide Group-Salt-Water Interactions for All-Climate Zinc-Ion Batteries
作者: Lin, Y (Lin, Yu); Huang, J (Huang, Jing); Wang, SJ (Wang, Sijun); Qi, LH (Qi, Luhe); Chen, WM (Chen, Weimin); Yu, L (Yu, Le); Chen, CJ (Chen, Chaoji)
来源出版物: ADVANCED MATERIALS DOI: 10.1002/adma.202509975 Early Access Date: AUG 2025 Published Date: 2025 AUG 11
摘要: Aqueous zinc-ion batteries (AZIBs) are promising candidates for next-generation energy storage due to their intrinsic safety and environmental compatibility. However, parasitic reactions induced by active water molecules in conventional aqueous electrolytes severely degrade electrochemical performance and cycling stability. Herein, a stretchable, adhesive, anti-freezing hydrogel electrolyte with dual-functional water regulation is synthesized via a one-pot radical polymerization strategy, where acetate (Ac-) anions and hydrophilic amide (& horbar;CONH2) groups on polyacrylamide (PAM) chains synergistically regulate water activity. This design disrupts water's intrinsic hydrogen bond network and suppresses interfacial side reactions, enabling stable AZIBs operation across a wide temperature range (-20 to 100 degrees C). Consequently, Zn||Cu cells employing PAM-Zn(Ac)2-4KAc (denoted PAM-ZnK4Ac) hydrogel electrolyte achieve an average Coulombic efficiency of 99.7% over 500 cycles, demonstrating outstanding reversibility. Meanwhile, Zn||polyaniline (PANI) cells retain 81.4% capacity after 1100 cycles at -20 degrees C and operate effectively up to 100 degrees C. This work establishes a facile yet effective strategy for preparing hydrogel electrolytes, advancing all-climate AZIBs toward extreme-environment energy storage and flexible electronics.
作者关键词: all-climate; dendrite-free; hydrogel electrolyte; water activity; zinc-ion batteries
地址: [Lin, Yu; Huang, Jing; Wang, Sijun; Qi, Luhe; Yu, Le; Chen, Chaoji] Wuhan Univ, Hubei Biomass Resource Chem & Environm Biotechnol, Hubei Prov Engn Res Ctr Emerging Funct Coating Mat, Sch Resource & Environm Sci, Wuhan 430079, Peoples R China.
[Lin, Yu; Chen, Weimin] Wuhan Inst Technol, Sch Chem Engn & Pharm, Key Lab Green Chem Proc, Minist Educ,Hubei Key Lab Novel Reactor & Green Ch, Wuhan 430205, Peoples R China.
通讯作者地址: Yu, L; Chen, CJ (通讯作者)，Wuhan Univ, Hubei Biomass Resource Chem & Environm Biotechnol, Hubei Prov Engn Res Ctr Emerging Funct Coating Mat, Sch Resource & Environm Sci, Wuhan 430079, Peoples R China.
Chen, WM (通讯作者)，Wuhan Inst Technol, Sch Chem Engn & Pharm, Key Lab Green Chem Proc, Minist Educ,Hubei Key Lab Novel Reactor & Green Ch, Wuhan 430205, Peoples R China.
电子邮件地址: [email protected]; [email protected]; [email protected]
影响因子：26.8
