Low-cost and high safe manganese-based aqueous battery for grid energy storage and conversion

作     者：Jianhang Huang Zhaowei Guo Xiaoli Dong Duan Bin Yonggang Wang Yongyao Xia 

作者机构：Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative MaterialsInstitute of New EnergyiChEM(Collaborative Innovation Center of Chemistry for Energy Materials)Fudan UniversityShanghai 200433China Key Laboratory of the Ministry of Education for Advanced Catalysis MaterialsDepartment of ChemistryZhejiang Normal UniversityJinhua 321004China School of Materials Science and EngineeringNanchang Hangkong UniversityNanchang 330063China 

出 版 物：《Science Bulletin》 (科学通报（英文版）)

年 卷 期：2019年第64卷第23期

页      面：1780-1787页

核心收录：

学科分类：0808[工学-电气工程] 08[工学] 

基　　金：financially supported by the National Natural Science Foundation of China (21622303, 21333002, 21805126) National Key Research and Development Plan (2016YFB0901500, 2016YFA0203302) 

主　　题：Manganese dioxide Copper electrode Aqueous battery Decoupled hydrogen evolution Water splitting Large-scale energy storage 

摘      要：As an effective energy storage technology, rechargeable batteries have long been considered as a promising solution for grid integration of intermittent renewables(such as solar and wind energy). However,their wide application is still limited by safety issue and high cost. Herein, a new battery chemistry is proposed to satisfy the requirements of grid energy storage. We report a simple Cu-Mn battery, which is composed of two separated current collectors in an H2SO4-CuSO4-MnSO4 electrolyte without using any membrane. The Cu-Mn battery shows an energy density of 40.8 Wh L-1, a super-long life of 10,000 cycles(without obvious capacity decay) and negligible self-discharge. And the capital cost of US$ 11.9 kWh-1 based on electrolyte is lower than any previous batteries. More importantly, the battery can still work smoothly during thermal abuse test and drill-through test, showing high safe nature. Furthermore, a combination system integrating the Cu-Mn battery and hydrogen evolution is also proposed, which is able to avoid the generation of explosive H2/O2 mixture, and presents an efficient approach for grid energy storage and conversion.