H - Electricity – 01 – M
Patent
H - Electricity
01
M
H01M 10/24 (2006.01) H01M 4/04 (2006.01) H01M 4/36 (2006.01) H01M 4/38 (2006.01) H01M 6/14 (2006.01) H01M 4/48 (2006.01) H01M 4/50 (2006.01) H01M 4/52 (2006.01) H01M 10/36 (2006.01) H01M 10/40 (2006.01)
Patent
CA 2324088
Provided is an active material for non-aqueous secondary battery having improved safety with maintaining the capacity and the cycle characteristic, a process for producing the same, and a non-aqueous secondary battery using the same. The active material can be doped/undoped with an alkali metal ion; the active material is a compound particle comprising three or more of constituting elements, and contains an element A selected from Li, Na, K, Mg, Ca, Sr, Ba, B, Al, Ga, In, Si, Zr, Sn, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Ag and Zn as one of the constituting elements; the particle has a region where the concentration of element A is decreasing continuously in the direction of from the particle surface to the particle core; and the ratio (d/D) of the mean width (d) of this region towards the depth direction to the mean radius (D) of the particle is 0.001<d/D<0.5.
Kawakami Yoshihiro
Nakane Kenji
Nishida Yasunori
Ogawa Hiroshi
Fetherstonhaugh & Co.
Sumitomo Chemical Company Limited
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