发明名称 |
METHOD FOR PRODUCING COMPOSITE LITHIUM IRON PHOSPHATE MATERIAL AND COMPOSITE LITHIUM IRON PHOSPHATE MATERIAL PRODUCED THEREBY |
摘要 |
<p>A method for producing a composite lithium iron phosphate material, which comprises formulating lithium iron phosphate material and purified water at a weight ratio of 1:5-15 into a suspension solution, slowly adjusting the pH value of the suspension solution to 1-3 with phosphoric acid at a concentration of 5-30%, adding an analytically pure soluble chloride in an amount of 0.05 - 2% based on the molar amount of the lithium iron phosphate material; then adding ammonia water into the solution to adjust the pH value of the solution to 5-6 to obtain hydroxide colloid; drying liquid through spraying to prepare powder, and calcining at 300-450?for 3-6 hours under an inert atmosphere; coating the oxide with high conductivity obtained by thermally decomposing the hydroxide colloid on the surface of the lithium iron phosphate material grains; ball milling and sieving the calcined material into a finished product. Also disclosed is the composite lithium iron phosphate material produced by such a method.</p> |
申请公布号 |
WO2010148638(A1) |
申请公布日期 |
2010.12.29 |
申请号 |
WO2010CN00906 |
申请日期 |
2010.06.21 |
申请人 |
HAITE ELECTRONIC GROUP CO., LTD;YE, LIGUANG |
发明人 |
YE, LIGUANG |
分类号 |
C01B25/45;H01M4/48;H01M4/58 |
主分类号 |
C01B25/45 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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