文献类型：期刊文献

英文题名：An Ion-Channel-Reconstructed Water/Organic Amphiphilic Quasi-Solid-State Electrolyte for High-Voltage Energy Storage Devices

作者：Zhang, Zekai[1];He, Qian[1];Wang, Hengyi[1];Liu, Changwei[1];Mu, Hongchun[1];Su, Haiping[1];Han, Xia[1];Liu, Honglai[1];Lian, Cheng[1]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2025

卷号：7

期号：2

起止页码：470

外文期刊名：CCS CHEMISTRY

收录：WOS:【ESCI(收录号:WOS:001218297400001)】；

基金：Acknowledgments This work was fi nancially supported by the National Key R&D Program of China (2022YFA1503501) , Shanghai Pilot Program for Basic Research (22T01400100-18) , the National Natural Science Foundation of China (no. 22278127, 22078088) , the Fundamental Research Funds for the Central Universities (no. 2022ZFJH004) . We also greatly thank Professor Gengchao Wang for helpful discussion.

语种：英文

外文关键词：quasi-solid-state electrolyte; energy stor- age devices; hydrophilic-hydrophobic equilibrium; ion-confinement transport; hydrogen bonding net- work; solvation structure

摘要：Quasi-solid-state electrolytes (QSSEs) have garnered significant attention due to combining the dynamic properties of liquid electrolytes and the high safety of solid-state electrolytes. However, the limited electrochemical stability window (ESW) of liquid electrolytes and the low conductivity of the polymer matrix seriously constrain practical application. Herein, an ant-nest electrospun amphiphilic polyurethane-based gel electrolyte (eAPG) with hydrophilic ion channels in an organic polyurethane matrix was synthesized by swelling electrospun amphiphilic polyurethane (eAP) membrane in NaClO 4 -based trimethyl phosphate aqueous solution. The dynamically reconstructed hydrophilic ion channels enhance the Na + transport rate five times compared to that in the polymer hydrophobic regions, which leads to a remarkable ion conductivity of 23.6 mS cm -1 . The transport of free water in QSSEs via the Grotthuss mechanism is intimately associated with the ESW, where the eAP cross-linked network diminished the activity of free water, resulting in an increased ESW of 2.3 V. Additionally, symmetric supercapacitors assembled by eAPG and activated carbon electrode exhibit 45.32 Wh kg -1 at a power density of 0.933 kW kg -1 with stable and long-term cycling. This rational electrolyte design strategy and remarkable electrochemical performance pave the way for the next generation of energy storage devices.