小麦淀粉-丙烯酰胺双交联凝胶在柔性锌-空气电池中的应用

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中图分类号：O646；TK02 文献标识码：A DOI:10.3969/j.issn.1674-8484.2025.06.008

¹，*1,2，³，¹，¹，²（1.中国；2.清华大学，智能绿色车辆与交通全国重点实验室中国；3.中国）

Application of wheat starch-acrylamide dual-crosslinked hydrogel in flexible zinc-air batteries

WANG Hengwei1,WANG Keliang*1,2,WEI Manhui³,CHEN Yunxiang1, LIU Hanchao1, PEl Pucheng

(1.SchoolofMechanicalEngineering,BeijingInstituteofTechnology,Beijingooo81,China; 2.StateKeyboratoryofIntellgentGreenVehiclendbilitysinghuaUniversityeijingo4a; 3.InstituteofChemicalDefense,AcademyofMilitarySciences,Beijing02205,China)

Abstract:Adual-crosslinking strategy,inwhichwheat starchandacrylamidewasused toconstructa lowcostand high-performance gel electrolyte,was proposed toovercome thechallengesof highcost,poor waterretention,and interfacial instabilityofelectrolytesinflexiblezinc-airbatteries,Materialcharacterization, electrochemical testing,and quantum chemical calculations were employed to evaluate its structural and electrochemical propertiesand to elucidate the mechanisms of performance enhancement.The results demonstrate that,incomparisonwithpolyacrylamidegel,thedeveloped gelexhibitsawater retentionrate of 81.7% after12 hours,representing a 16% improvement;a fracture strain of 135% ,indicatingan 81% enhancement;an ionic conductivity of 37500010m reflectinga 69% increase;and a discharge power density of 175mW/cm2 showing a 48% rise.Furthermore,the cycling stabilityof theassembled flexible zinc-air battery exceeds 45 hours,indicating a twofold enhancement inoperationalifespan.This dual-crosslinking strategy, which formscontinuous hydrophilicionchannelsand enhances interfacial wetabilitysignificantlyimproves waterretention,mechanical strength,ionicconductivity，andelectrochemical stability，therebyofferingan optimization solution for the development of flexible zinc-air batteries.

Keywords:flexible battery; dual crosslinking; gel electrolyte;wheat starch; cycling life

随着柔性电子和可穿戴设备的迅速发展，储能单元亟需同时满足轻薄、柔韧、安全和绿色环保等特性，以适应未来电子产品在健康监测、柔性显示和物联网终端等领域的应用需求[1-3]。（剩余19940字）