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| Carbothermic Reduction Preparation and Characterization of Mg-doped Lithium Iron Phosphate |
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Received:April 26, 2018
Revised:May 03, 2018
Accepted:May 07, 2018
Published Online:September 19, 2018
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| DOI：doi：10.3969/j.issn.1007-7545.2018.10.014 |
| KeyWord:precipitation method; carbothermic reduction method; magnesium; lithium iron phosphate |
| Author | Institution |
| LI Chao |
中国地质科学院矿产综合利用研究所 |
| LIU Shu-ping |
中国地质科学院矿产综合利用研究所 |
| FENG Xue-ru |
中国地质科学院矿产综合利用研究所 |
| TANG Xiang-ping |
中国地质科学院矿产综合利用研究所 |
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| Abstract: |
| Ferric phosphate was prepared by precipitation method, and then mixed with lithium carbonate, glucose and magnesium source to prepare lithium iron phosphate by carbothermic reduction method. Particle size of ferric phosphate is normal distribution with D50=2.94 μm. Mg-doped lithium iron phosphate particles have spherical shape with D50=2.80 μm. XRD patterns of synthesized lithium iron phosphate show no significant differences. Specific capacity of LiFe1-xMgxPO4/C rises with increase of value of x. Upon x=0.01, the discharge capacity of sample is 162 mAh/g at 0.1C rate and 135 mAh/g at 1C rate respectively. Excellent cycle performance is presented. |
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