文献类型：期刊文献

英文题名：A Harsh Environmental Resistant and Long-Term Stable Ionic Conductive Hydrogel by One-Step Preparation for Wireless Health Activities and Physiological States Detection

作者：Huang, Gang[1,2]; Miao, Haiyue[2,3]; Zhang, Xi[4]; Zheng, Chongyang[5]; Huang, Xiaojuan[5]; Liu, Yiyang[6]; He, Yang[1,2]; Fu, Xiaobin[2]; Ge, Min[2]; Huang, Hailong[2]; Zhang, Rui[1]; Liu, Hongtao[2]; Qian, Yuan[2]

机构：[1] Engineering Research Centre of Large Scale Reactor Engineering and Technology, Ministry of Education, School of Chemical Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, China; [2] Key Laboratory of Interfacial Physics and Technology, Department of Molten Salt Chemistry and Engineering, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, No. 2019 Jialuo Road, Shanghai, 201800, China; [3] University of Chinese Academy of Sciences, Beijing, 100049, China; [4] Public Technology Service Center of Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, 200062, China; [5] Department of Oral and Maxillofacial-Head & Neck Oncology, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China; [6] Phonon Science Research Center for Carbon Dioxide, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, 201210, China

年份：2024

外文期刊名：SSRN

收录：EI(收录号：20240167358)

语种：英文

外文关键词：Additives - Fits and tolerances - Ionic strength - Metal ions - Molecules - Physiology - Stability - Wearable sensors

摘要：Benefiting from the good electromechanical performance, ionic conductive hydrogel can easily convert the deformation into electrical signals, showing great potential in wearable electronic devices. However, due to the high water content, icing and water evaporation problems seriously limit their development. Although additives can ease these disadvantages, the accompanying performance degradation and complex preparation processes couldn’t meet application needs. In this work, a convenient method was provided to prepare ionic conductive hydrogels with sensitive electromechanical performance, harsh environmental tolerance, and long-term stability without additives. Based on the hydratability between metal ions and water molecular resulting in spatial condensation of the hydrogel framework, the hydrogel exhibits excellent mechanical strength and ionic conductivity (70.3 mS/cm). Furthermore, the metal salt can bind with water molecules to reduce the vapor pressure, thus endowing the hydrogel with good freezing resistance (-40 ℃) and long-term stability over a wide temperature range (-20 ℃- 50 ℃). Based on these unique advantages, the hydrogel shows excellent sensitivity. Even in a harsh environment, it still maintained good stability (-20 ℃-50 ℃, GF = 2.2, R2 > 0.99). Assembled with a Wi-Fi device, the hydrogel sensor demonstrates excellent health activities and physiological states detection, demonstrating great potential for wearable medical devices. ? 2024, The Authors. All rights reserved.