Zn Regulates Layered Structure to Enhance the Potassium Storage Performance of Manganese Based Materials
摘要
Practical applications of potassium ion batteries are severely limited by serious volume expansion, poor stability and lots of side reactions related to high oxidation-reduction potential. Here, Zn2+ doped layered manganese-based transition-metal oxides K0.5Mn0.8Co0.1Zn0.1O2 are fabricated through a simple sol-gel method to adjust the layered structure. By accurately regulating interlayer space through doping, the cycling stability of Mn-based layered oxides has been improved. This strategy may provide a new guideline for the development of advanced cathode materials for potassium ion batteries.