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

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

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Current aqueous battery electrolytes,including conventional 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)organohydrogel electrolyte based on dimethyl sulfoxide(DMSO)/H2O binary solvent was proposed.Through directionally reconstructing hydrogen bonds and reducing active H2O molecules,the water retention ability and cath-ode/anode interfaces were synergistic enhanced.As a result,the synthesized DN organohydrogel demon-strates exceptional water retention capabilities,retaining approximately 75％of its original weight even after the exposure to air for 20 days.The Zn||MnO2 battery delivers an outstanding specific capacity of 275 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.

Enhanced water-retentiveOrganohydrogel electrolyteStable Zn||MnO2 batteriesEnhancement of cathode/anode interfaces

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

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School of Physics and Technology,University of Jinan,Jinan 250022,Shandong,China

School of Chemistry and Chemical Engineering,Shandong University,Jinan 250100,Shandong,China

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

School of System Design and Intelligent Manufacturing,Southern University of Science and Technology,Shenzhen 518055,Guangdong,China

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2024

10.1016/j.jechem.2024.07.023

能源化学
中国科学院大连化学物理研究所 中国科学院成都有机化学研究所

能源化学

CSTPCDEI
影响因子：0.654
ISSN：2095-4956
年,卷(期)：2024.98(11)