ACTIVE MATERIAL OF POSITIVE ELECTRODE FOR ELECTRIC DEVICE, POSITIVE ELECTRODE FOR ELECTRIC DEVICE AND ELECTRIC DEVICE Russian patent published in 2015 - IPC H01M4/505 H01M4/36 H01M4/525 H01M10/525 

FIELD: electricity.

SUBSTANCE: active material of positive electrode for electric device comprises the first active material and the second active material. The first active material contains transition metal oxide represented by the formula (1): Li_1.5[Ni_aCo_bMn_c[Li]_d]O₃ …(1), where in the formula (1) a, b, c and d meet the following ratios: 0<d<0.5; a+b+c+d=1.5; and 1.0<a+b+c<1.5. The second active material consists of transition metal oxide of spinel type represented by the formula (2) and having crystalline structure referred to space group Fd-3m: LiM_a'Mn_2-a'O₄ …(2), where in the formula (2) M is metal element with valency 2-4, and a' meets the following ratio: 0≤a'<2.0. Relative content of the first active material and the second active material meets by weight ratio the ratio represented by the following formula (3): 100:0<M_A:M_B<0:100…(3) (where in the formula (3) M_A is mass of the first active material and M_B is mass of the second active material).

EFFECT: improving charge-discharge efficiency of the accumulator battery made of the above material.

13 cl, 4 dwg, 6 tbl