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| Effect of Different Li Sources on Electrochemical Performance of LiFePO4 Cathode Material |
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| DOI：DOI：10.3969/j.issn.1007-7545.2011.07.012 |
| KeyWord:inorganic nonmetal material; lithium iron phosphate; CH3COOLi?2H2O; carbothermal reduction; cathode material |
| Author | Institution |
| BO Li-min |
燕山大学 环境与化学工程学院，河北秦皇岛 |
| QIN Xiu-juan |
燕山大学 环境与化学工程学院，河北秦皇岛 |
| SUN Xue-liang |
燕山大学 环境与化学工程学院，河北秦皇岛 |
| WU Wei |
燕山大学 环境与化学工程学院，河北秦皇岛 |
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| Abstract: |
| The LiFePO4 cathode material is synthesized with different Li sources by carbothermal reduction methods, and the crystalline structure and morphology of the precursor and cathode material are characterized by TG-DTA and X-ray powder diffraction and the electrochemical properties are investigated by charge-discharge and CV tests. The results show that the finest particle size and the optimal electrochemical performance are achieved for the sample synthesized with CH3COOLi?2H2O. And a high capacity of 143.3 mA?h/g is delivered at the C/20 rate. The sample also displays a stable cycle-life, and even after 15 cycles, the discharge capacity is still 98% of initial capacity at C/10 rate. It is show by CV tests that the reversibility and the polarization of the sample synthesized with CH3COOLi?2H2O are the best and the smallest. |
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