文献类型：期刊文献

英文题名：Self-adhesive, freeze-tolerant, and strong hydrogel electrolyte containing xanthan gum enables the high-performance of zinc-ion hybrid supercapacitors

作者：Zhou, Yiyang[1,3] Liu, Hailang[1] Zhou, Xuan[3] Lin, Xiangyu[3] Cai, Yinfeng[1] Shen, Minggui[3] Huang, Xujuan[1] Liu, He[3] Xu, Xu[2]

第一作者：Zhou, Yiyang

通信作者：Huang, XJ[1];Xu, X[2];Shen, MG[3]

机构：[1]Yancheng Inst Technol, Sch Chem & Chem, Yancheng 224000, Jiangsu, Peoples R China;[2]Nanjing Forestry Univ, Coll Chem Engn, Jiangsu Coinnovat Ctr Efficient Proc & Utilizat Fo, Nanjing 210037, Peoples R China;[3]Chinese Acad Forestry, Inst Chem Ind Forestry Prod, Nanjing 210042, Jiangsu, Peoples R China

年份：2024

卷号：265

外文期刊名：INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES

收录：;EI(收录号：20241415837370);Scopus(收录号：2-s2.0-85189006569);WOS:【SCI-EXPANDED(收录号:WOS:001223073100001)】；

基金：This work was supported by the Forestry Science and Technology Innovation and Extension Project of Jiangsu Province (LYKJ [2021] 04) .

语种：英文

外文关键词：Xanthan gum; Hydrogel electrolyte; Anti-freezing; Self-adhesion; Zinc-ion hybrid supercapacitor

摘要：Hydrogel electrolyte is an ideal candidate material for flexible energy storage devices due to its excellent softness and conductivity properties. However, challenges such as the inherent mechanical weakness, the susceptibility to be frozen in low-temperature environments, and the insufficiency of hydrogel-electrode contact persist. Herein, a "Multi in One" strategy is employed to effectively conquer these difficulties by endowing hydrogels with high strength, freeze-resistance, and self-adhesive ability. Multiple hydrogen bond networks and ion crosslinking networks are constructed within the hydrogel electrolyte (PVA/PAAc/XG) containing polyvinyl alcohol (PVA), acrylic acid (AAc), and xanthan gum (XG), promoting the enhanced mechanical property, and the adhesion to electrode materials is also improved through abundant active groups. The introduction of zinc ions provides the material with superior frost resistance while also promoting electrical conductivity. Leveraging its multifunction of superior mechanical strength, anti-freeze property, and self-adhesive characteristic, the PVA/PAAc/XG hydrogel electrolyte is employed to fabricate zinc ion hybrid supercapacitors (ZHS). Remarkably, ZHS exhibits outstanding electrochemical performance and cycle stability. A remarkable capacity retention rate of 83.86 % after 10,000 charge-discharge cycles can be achieved at high current densities, even when the operational temperature decreases to -60 degrees C, showing great potential in the field of flexible energy storage devices.