文献类型：期刊文献

英文题名：Highly Strong, Tough, and Cryogenically Adaptive Hydrogel Ionic Conductors via Coordination Interactions

作者：Wang, Zhuomin[1,2] Wang, Siheng[1] Zhang, Lei[1] Liu, He[1] Xu, Xu[2]

第一作者：Wang, Zhuomin

通信作者：Liu, H[1];Xu, X[2]

机构：[1]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Natl Engn Res Ctr Low Carbon & Efficient Utilizat, Key Lab Biomass Energy & Mat Jiangsu Prov,Jiangsu, Nanjing 210042, Peoples R China;[2]Nanjing Forestry Univ, Coll Chem Engn, Coinnovat Ctr Efficient Proc & Utilizat Forest Res, Nanjing 210037, Peoples R China

年份：2024

卷号：7

外文期刊名：RESEARCH

收录：;EI(收录号：20241715977035);Scopus(收录号：2-s2.0-85188175773);WOS:【SCI-EXPANDED(收录号:WOS:001164663900001)】；

基金：This work was supported by the National Natural Science Foundation of China (grant 31890774) to H.L. and the Forestry Science and Technology Innovation and Extension Project of Jiangsu Province (grant LYKJ [2021] 04) to H.L.

语种：英文

外文关键词：Carboxylic acids - Compressive strength - Ductile fracture - Ionic conductivity - Ionic strength - Molecules - Signal to noise ratio - Tensile strength

摘要：Despite the promise of high flexibility and conformability of hydrogel ionic conductors, existing polymeric conductive hydrogels have long suffered from compromises in mechanical, electrical, and cryoadaptive properties due to monotonous functional improvement strategies, leading to lingering challenges. Here, we propose an all-in-one strategy for the preparation of poly(acrylic acid)/cellulose (PAA/Cel) hydrogel ionic conductors in a facile yet effective manner combining acrylic acid and salt-dissolved cellulose, in which abundant zinc ions simultaneously form strong coordination interactions with the two polymers, while free solute salts contribute to ionic conductivity and bind water molecules to prevent freezing. Therefore, the developed PAA/Cel hydrogel simultaneously achieved excellent mechanical, conductive, and cryogenically adaptive properties, with performances of 42.5 MPa for compressive strength, 1.6 MPa for tensile strength, 896.9% for stretchability, 9.2 MJ m-3 for toughness, 59.5 kJ m-2 for fracture energy, and 13.9 and 6.2 mS cm-1 for ionic conductivity at 25 and -70 degrees C, respectively. Enabled by these features, the resultant hydrogel ionic conductor is further demonstrated to be assembled as a self-powered electronic skin (e-skin) with high signal-to-noise ratio for use in monitoring movement and physiological signals regardless of cold temperatures, with hinting that could go beyond high-performance hydrogel ionic conductors.