Active material for electrode and non-aqueous secondary...

Details Active material for electrode and non-aqueous secondary... Active material for electrode and non-aqueous secondary...

2008-01-08

2008-01-08

Ryan, Patrick (Department: 1745)

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Electrode or plural tablets, pellets or discs

C429S209000, C429S223000, C429S224000, C429S231300, C429S231950, C429S233000, C429S235000

Reexamination Certificate

active

10717772

ABSTRACT:
A lithium-containing complex oxide represented by General Formula: Li1+x+αNi(1−x−y+δ)/2Mn(1−x−y−δ)/2MyO2(where 0≦x≦0.15, −0.05≦x+α≦0.2, 0≦y≦0.4; −0.1≦δ≦0.1 (when 0≦y≦0.2) or −0.24≦δ≦0.24 (when 0.2<y≦0.4); and M is at least one element selected from the group consisting of Mg, Ti, Cr, Fe, Co, Cu, Zn, Al, Ge, Zr and Sn) is provided. The lithium-containing complex oxide contains secondary particles formed of flocculated primary particles. The primary particles have a mean particle diameter of 0.3 to 3 μm, and the secondary particles have a mean particle diameter of 5 to 20 μm. By using this lithium-containing complex oxide as a positive active material, a non-aqueous secondary battery having a high capacity, excellent cycle durability and excellent storage characteristics at a high temperature is achieved.

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