Synthesis and characterization of Cr8O21 as cathode material for rechargeable lithium batteries |
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| Affiliation: | 1. School of Materials Science and Engineering, North University of China, Taiyuan 030051, PR China;2. Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, PR China |
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| Abstract: | Pure phase Cr8O21 with excellent electrochemical properties has been synthesized by sintering anhydrous chromium trioxide (CrO3) at low temperature in flowing oxygen. Cyclic voltammetry (CV) and X-ray diffraction (XRD) characterizations indicate that the inner tetra-chromate groups of Cr8O21 are damaged and Cr8O21 is changed to another layer-structured material when lithium is inserted into the host. |
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