Cryptomelane-type manganese oxide (KMn8O16) nanorods cathode materials synthesized by a rheological phase for lithium ion batteries

2017 3rd International Conference on Environmental Science and Material Application

生态环境科学;材料科学

Zheng, Hao^1 ; Wang, Ting^1 ; Zhao, Rongfei^1 ; Chen, Jinsong^1 ; Li, Lin^1

Key Lab. of Funct. Mat. and Chemistry for Performance and Resource of Guizhou Education Department, Anshun University, Anshun

561000, China^1

关键词: Annealed samples;    Annealed temperature;    Cath-ode materials;    Cryptomelane;    Cycling stability;    Discharge capacities;    Electrochemical performance;    Rheological phase reaction method;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/108/2/022012/pdf
DOI  :  10.1088/1755-1315/108/2/022012

来源: IOP

【 摘 要 】

Cryotolerance-type manganese oxide (KMn8O16) nanorods were prepared for the first time by a rheological phase reaction method. The KMn8O16samples were characterized by X-ray diffraction, scanning electron microscopy, the effects of different annealed temperatures on the morphologies and electrochemical properties of the final products were systematically investigated. The result that the annealed samples exhibit the superior electrochemical performances compared to the unannealed sample. The KMn8O16nanorods annealed at 400 C show the highest reversible discharge capacity (147.9 mAh/g even after 80 cycles) at current density of 50 mA/g and the best cycling stability. These results indicate that the KMn8O16nanorods could be a promising cathode material for lithium ion batteries.