文献类型：期刊文献

英文题名：Facile Design of Multiscale Cellulose-Enhanced Hydrogel Electrolytes for Flexible Zn-Ion Capacitors in Wearable Electronics

作者：Wang, Hong[1,2] Wang, Yutao[1] Pang, Yao[1] Wang, Yuxing[1] Lai, Chenhuan[2] Zhang, Daihui[1,2] Liu, Yupeng[1,2]

第一作者：Wang, Hong

通信作者：Zhang, DH[1];Liu, YP[1];Zhang, DH[2];Liu, YP[2]

机构：[1]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Nanjing 210042, Jiangsu, Peoples R China;[2]Nanjing Forestry Univ, Jiangsu Coinnovat Ctr Efficient Proc & Utilizat Fo, Nanjing 210037, Jiangsu, Peoples R China

年份：2025

外文期刊名：MACROMOLECULAR RAPID COMMUNICATIONS

收录：;EI(收录号：20251918362230);Scopus(收录号：2-s2.0-105004222683);WOS:【SCI-EXPANDED(收录号:WOS:001479339200001)】；

基金：This study was funded by the National Natural Science Foundation (32322056), National Key Research and Development Program of China (2023YFD2200504) and Fundamental Research Funds of CAF (CAFYBB2024XA002).

语种：英文

外文关键词：cellulose nanocrystals; CMC; electrolyte; hydrogel; polyacrylamide; zinc-ion capacitors

摘要：Flexible solid-state supercapacitors show significant potential for wearable electronics; however, achieving simultaneous mechanical robustness and high ionic conductivity remains challenging. In this work, a polyacrylamide (PAM)/cellulose nanocrystal (CNC)-based hydrogel electrolyte loading with carboxymethyl cellulose (CMC) is engineered to address this limitation (PAM/CNC-CMC-Zn2+). Incorporating CNC improved the mechanical properties of hydrogels, while subsequently adding CMC-Na enriched with hydrophilic groups (& horbar;OH and & horbar;COO-) into PAM/CNC hydrogels disrupted hydrogen-bond networks within the ZnSO4 electrolyte, thereby optimizing Zn2+ solvation sheath structure. This modification suppressed corrosion currents and minimized side reactions. The hydrogel demonstrated outstanding mechanical properties, including a tensile strength of 0.22 MPa, high stretchability (1452.1%), and remarkable fracture toughness (0.98 MJ m-3). The zinc-ion capacitors (Zn // PAM/CNC-CMC-Zn2+ // AC) demonstrate exceptional electrochemical performance, achieving a significant specific capacitance of 151.4 F g(-)(1) at 0.5 A g(-)(1), coupled with a remarkable power density of 1150 W kg(-)(1) (at 10.9 Wh kg(-)(1)). Notably, the device exhibits outstanding performance stability, maintaining its functionality under mechanical folding and retaining its efficiency after 10 000 long charge-discharge cycles. These multiscale cellulose-based design highlights the hydrogel electrolyte's dual functionality in balancing mechanical adaptability and electrochemical efficiency, offering a potential solution for next-generation wearable energy storage systems.