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METHOD OF MANUFACTURING IRON PHOSPHATE USING pH CONTROL AND METHOD OF MANUFACTURING CARBON COATED LITHIUM IRON PHOSPHATE FOR CATHODE OF LITHIUM SECONDARY BATTERY
METHOD OF MANUFACTURING IRON PHOSPHATE USING pH CONTROL AND METHOD OF MANUFACTURING CARBON COATED LITHIUM IRON PHOSPHATE FOR CATHODE OF LITHIUM SECONDARY BATTERY
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机译:利用pH控制制造磷酸铁的方法和锂二次电池正极的碳包覆磷酸铁锂的制造方法。
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摘要
Disclosed are a production method of FePO4 using pH control, and a production method of LiFePO4/C for a positive electrode of a lithium secondary battery. The production method of FePO4 by the present invention comprises the following steps: (a) a step for adding a tervalent iron containing material into a phosphate containing solution; (b) a step for precipitating FePO4 by adjusting the pH of the solution from the (a) step; (c) a step for filtering the precipitated FePO4; and (d) a step for drying the filtered FePO4. [Reference numerals] (AA) Start; (BB) End; (S110) Add FeCL_3 in H_3PO_4 solution; (S120) FePO_4 precipitation through adding NH_4OH; (S130) Washing/filtering; (S140) Drying; (S150) Heat treatment
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