C - Chemistry – Metallurgy – 01 – G
Patent
C - Chemistry, Metallurgy
01
G
C01G 45/02 (2006.01) C01D 15/02 (2006.01) C01G 37/00 (2006.01) C01G 45/00 (2006.01) C01G 49/00 (2006.01) C01G 51/00 (2006.01) C01G 53/00 (2006.01) H01M 4/04 (2006.01) H01M 4/50 (2006.01) H01M 4/02 (2006.01) H01M 10/40 (2006.01)
Patent
CA 2359314
A method for producing a cathode active material which produces a spinet type lithium manganese oxide expressed by a general formula: Li1+x Mn2-x-y Me y PO4, as the cathode active material, (here, x is expressed by a relation of 0 ~ x < 0.15 and y is expressed by a relation of 0 < y < 0.3, and Me is at least one kind of element selected from between Co, Ni, Fe, Cr, Mg and Al). The method comprises a mixing step of mixing raw materials of the spinet type lithium manganese oxide to obtain a precursor; and a sintering step of sintering the precursor obtained in the mixing step to obtain the spinet type lithium manganese oxide. The sintering temperature in the sintering step is located within a range of 800°C or higher and 900°C or lower. Accordingly. even when manganese which is inexpensive and abundant in resources is employed as a main material, an excellent cathode performance can be maintained under the environment.
Fukushima Yuzuru
Hosoya Mamoru
Sakai Hideki
Takahashi Kimio
Gowling Lafleur Henderson Llp
Sony Corporation
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