From aqueous Zn-ion battery to Zn-MnO2 flow battery:A brief story

• 作者: Tong Xue Hong Jin Fan
• 来源期刊: 能源化学
• 年，卷（期）: 2021,（3）
• 页码范围: 194-201
• 页数: 8页
• 语种: 英文

摘要

Aqueous Zn-ion battery(AZIB)has become an attractive technology because of its unique features of low cost,high safety and the eco-friendliness.MnO2 is the model cathode material for AZIB since the first report on reversible Zn-MnO2 battery,but recent studies have unveiled different charge storage mecha-nisms.Due to revamping of the electrochemistry and redesigning of the electrolyte and interface,there is tremendous performance enhancement in AZIB.This mini Review will first give a brief introduction of ZIB,including fundamentals of materials and components,and the progress in recent years.Then,a gen-eral classification of working mechanisms related to MnO2 in neutral and mildly acidic electrolyte is elab-orated.Our focus is put on the recent blossoming Zn-MnO2 electrolytic mechanism,which has given birth to the Zn-MnO2 redox flow batteries that are highly promising for large-scale static energy storage.