A fish-gelatin-modified multifunctional hydrogel with "salt-in-water" for dendrite-free flexible zinc-ion batteries
文献类型： 外文期刊
作者： Cheng, Wen-Long 1 ; Cheng, Zi-Qiang 5 ; Hu, Zi-Zi 1 ; Hu, Ming-Ming 1 ; Liu, Guang-Xian 3 ; Yuan, Lin-Feng 3 ; Fu, Yan-Hui 1 ; Sha, Xiao-Mei 1 ; Tu, Zong-Cai 1 ;
作者机构： 1.Jiangxi Normal Univ, Coll Chem & Chem Engn, Natl R&D Ctr Freshwater Fish Proc, Nanchang 330022, Jiangxi, Peoples R China
2.Jiangxi Normal Univ, Coll Life Sci, Nanchang 330022, Jiangxi, Peoples R China
3.Jiangxi Acad Agr Sci, Inst Agr Prod Proc, Nanchang 330200, Jiangxi, Peoples R China
4.Nanchang Univ, State Key Lab Food Sci & Resources, Nanchang 330047, Jiangxi, Peoples R China
5.East China Jiaotong Univ, Dept Appl Phys, Nanchang 330013, Peoples R China
关键词： Fish gelatin; Hydrogel electrolyte; Dendrite-free; Flexible zinc ion battery
期刊名称：CHEMICAL ENGINEERING JOURNAL （ 影响因子：13.2； 五年影响因子：13.5 ）
ISSN： 1385-8947
年卷期： 2025 年 521 卷
页码：
收录情况： SCI
摘要： Aqueous zinc-ion batteries (ZIBs) have emerged as promising next-generation energy storage solutions due to their high safety. Hydrogel electrolytes have garnered intensive interest for their applications in flexible ZIBs, combining mechanical flexibility with dendrite-suppression capabilities. However, conventional hydrogels suffer from three critical limitations: insufficient mechanical robustness, interfacial instability, and excessive salt dependence. Herein, we report a novel fish gelatin (FG)-modified polyacrylamide (PAM) hydrogel electrolyte fabricated via a facile protein chain network repair strategy. The optimized FG/PAM hydrogel electrolyte with 1 M ZnSO4 exhibits superior mechanical properties, enabling ZIBs with flexible dendrite-free and prolonged lifespan. Specifically, the FG-modified hydrogel achieved a compressive strength exceeding 1078 kPa under 90 % compression and showed strong adhesion to diverse substrates. Electrochemically, the FG/PAM electrolyte exhibits excellent corrosion resistance and zinc-nucleation regulation capabilities, delivering a stable coulombic efficiency (CE) of 99.26 % and cycling stability over 2238 h. These results highlight the FG/PAM hydrogel in addressing mechanical integrity, interfacial compatibility, and long-term cyclability, providing a viable pathway for advanced flexible energy storage devices.
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