Yi Dawei, Cui Xumei, Zhang Xuefeng, Liu Tiantian, Lin Danping, Xu Shanglin. Preparation of High Performance Battery-grade Cathode Material Lithium Iron Phosphate by Freeze-drying Method[J]. IRON STEEL VANADIUM TITANIUM, 2020, 41(1): 48-53. doi: 10.7513/j.issn.1004-7638.2020.01.009
Citation:
Yi Dawei, Cui Xumei, Zhang Xuefeng, Liu Tiantian, Lin Danping, Xu Shanglin. Preparation of High Performance Battery-grade Cathode Material Lithium Iron Phosphate by Freeze-drying Method[J]. IRON STEEL VANADIUM TITANIUM, 2020, 41(1): 48-53. doi: 10.7513/j.issn.1004-7638.2020.01.009
Yi Dawei, Cui Xumei, Zhang Xuefeng, Liu Tiantian, Lin Danping, Xu Shanglin. Preparation of High Performance Battery-grade Cathode Material Lithium Iron Phosphate by Freeze-drying Method[J]. IRON STEEL VANADIUM TITANIUM, 2020, 41(1): 48-53. doi: 10.7513/j.issn.1004-7638.2020.01.009
Citation:
Yi Dawei, Cui Xumei, Zhang Xuefeng, Liu Tiantian, Lin Danping, Xu Shanglin. Preparation of High Performance Battery-grade Cathode Material Lithium Iron Phosphate by Freeze-drying Method[J]. IRON STEEL VANADIUM TITANIUM, 2020, 41(1): 48-53. doi: 10.7513/j.issn.1004-7638.2020.01.009
Lithium iron phosphate powder as battery-grade cathode material was prepared by freeze-drying method respectively using LiOH·H2O as lithium source,FeNO3·9 H2O as iron source,NH4H2PO4 as phosphate source,citric acid as carbon source and chelating agent.The effects of sintering process on crystallinity and electrochemical properties of the carbon-coated lithium iron phosphate（LiFePO4/C） cathode materials were investigated by XRD,charge-discharge test and cyclic voltammetry.The results show that the cathode material（LiFePO4/C） sintered at 750 ℃ presents the best electrochemical performances,with a discharge specific capacity of 150.5,142.2,128.1,117.8 and 105.4 mAh/g at 0.1 C,0.2 C,1 C,2 C and 5 C,respectively.
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