材料科学
电解质
多孔性
锂(药物)
分散性
阴极
化学工程
电极
离子
水解
无机化学
复合材料
高分子化学
化学
有机化学
医学
工程类
内分泌学
物理化学
作者
Haihui Wang,Zhenda Lu,Wang Da,Chunguang Li,Chunhua Chen,Yadong Yin
摘要
Monodisperse V2O5 microspheres with a porous structure were synthesized by a very simple hydrolysis method and subsequent reduction/oxidation treatment at high temperatures. The porous V2O5 used as a cathode material for lithium-ion batteries (LIBs) shows a stable and highly reversible capacity. It also shows excellent low-temperature behavior with a reversible capacity of 102 mA h g−1 at −20 °C. The excellent performance can be attributed to the porous structure of the V2O5 spheres, which are more electrochemically active due to a large interfacial contact area with the electrolyte. We believe the strategy of creating porosity may be extended to other electrode materials to improve the performance of lithium ion batteries.
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