Synergistic enhancement of cathode/anode interfaces with high water-retentive organohydrogel enabling highly stable zinc ion batteries  

作　　者：Xixi Zhang Qingxiu Yu Guangmeng Qu Xiaoke Wang Chuanlin Li Chenggang Wang Na Li Jinzhao Huang Cuiping Han Hongfei Li Xijin Xu 

机构地区：[1]School of Physics and Technology,University of Jinan,Jinan 250022,Shandong,China [2]School of Chemistry and Chemical Engineering,Shandong University,Jinan 250100,Shandong,China [3]Faculty of Materials Science and Engineering and Low Dimensional Energy Materials Research Center,Shenzhen Institute of Advanced Technology,Chinese Academy of Sciences,Shenzhen 518055,Guangdong,China [4]School of System Design and Intelligent Manufacturing,Southern University of Science and Technology,Shenzhen 518055,Guangdong,China

出　　处：《Journal of Energy Chemistry》2024年第11期670-679,共10页能源化学（英文版）

基　　金：Joint Funds of the National Natural Science Foundation of China (U22A20140);University of Jinan Disciplinary Cross-Convergence Construction Project 2023 (XKJC-202309, XKJC-202307);Jinan City-School Integration Development Strategy Project (JNSX2023015);Independent Cultivation Program of Innovation Team of Ji’nan City (202333042);Youth Innovation Group Plan of Shandong Province (2022KJ095);Shenzhen Stable Support Plan Program for Higher Education Institutions Research Program (20220816131408001);Shenzhen Science and Technology Program (JCYJ20230807091802006)。

摘　　要：Current aqueous battery electrolytes,including conve ntional hydrogel electrolytes,exhibit unsatisfactory water retention capabilities.The sustained water loss will lead to subsequent polarization and increased internal resistance,ultimately resulting in battery failure.Herein,a double network(DN) orga no hydrogel electrolyte based on dimethyl sulfoxide(DMSO)/H_(2)O binary solvent was proposed.Through directionally reconstructing hydrogen bonds and reducing active H_(2)O molecules,the water retention ability and cathode/anode interfaces were synergistic enhanced.As a result,the synthesized DN organohydrogel demonstrates exceptional water retention capabilities,retaining approximately 75% of its original weight even after the exposure to air for 20 days.The Zn MnO_(2) battery delivers an outstanding specific capacity of275 mA h g^(-1) at 1 C,impressive rate performance with 85 mA h g^(-1) at 30 C,and excellent cyclic stability(95% retention after 6000 cycles at 5 C).Zn‖Zn symmetric battery can cycle more than 5000 h at 1 mA cm^(-2) and 1 mA h cm^(-2) without short circuiting.This study will encourage the further development of functional organohydrogel electrolytes for advanced energy storage devices.

关 键 词：Enhanced water-retentive Organohydrogel electrolyte Stable Zn||MnO+2 batteries Enhancement of cathode/anode interfaces 

分 类 号：TM912[电气工程—电力电子与电力传动] TQ427.26[化学工程]