MgSO₄/ZnSO₄混合电解质中的可充电水系锌离子电池

Rechargeable Aqueous Zinc-Ion Batteries in MgSO/ZnSO Hybrid Electrolytes.

作者信息

Zhang Yingmeng, Li Henan, Huang Shaozhuan, Fan Shuang, Sun Lingna, Tian Bingbing, Chen Fuming, Wang Ye, Shi Yumeng, Yang Hui Ying

机构信息

College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518060, Guangdong, People's Republic of China.

International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education, Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen, 518060, People's Republic of China.

出版信息

Nanomicro Lett. 2020 Feb 21;12(1):60. doi: 10.1007/s40820-020-0385-7.

DOI:10.1007/s40820-020-0385-7

PMID:34138271

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7770650/

Abstract

MgSO is chosen as an additive to address the capacity fading issue in the rechargeable zinc-ion battery system of MgVO·nHO//ZnSO//zinc. Electrolytes with different concentration ratios of ZnSO and MgSO are investigated. The batteries measured in the 1 M ZnSO M MgSO electrolyte outplay other competitors, which deliver a high specific capacity of 374 mAh g at a current density of 100 mA g and exhibit a competitive rate performance with the reversible capacity of 175 mAh g at 5 A g. This study provides a promising route to improve the performance of vanadium-based cathodes for aqueous zinc-ion batteries with electrolyte optimization in cost-effective electrolytes.

摘要

硫酸镁被选作添加剂，以解决MgVO·nH₂O//ZnSO₄//锌可充电锌离子电池系统中的容量衰减问题。研究了具有不同硫酸锌和硫酸镁浓度比的电解质。在1M硫酸锌 + 1M硫酸镁电解质中测量的电池性能优于其他同类电池，在100 mA/g的电流密度下具有374 mAh/g的高比容量，在5 A/g时具有175 mAh/g的可逆容量，展现出有竞争力的倍率性能。本研究为通过在经济高效的电解质中进行电解质优化来提高水系锌离子电池钒基阴极性能提供了一条有前景的途径。