Cathode material for lithium ion secondary batteries, cathode member for lithium ion secondary batteries, and lithium ion secondary battery
AssigneeShoei Chemical Inc.
InventorsAtsushi Nemoto, Hirokazu Sasaki, Masahiko Miyahara
Life of this patent
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Abstract
A cathode material for a lithium ion secondary battery includes an oxide represented by a composition formula Li2+x(M,MA)(Si,MB)O4, wherein M represents at least one element selected from the group consisting of Fe, Mn, Co and Ni; MA and MB represent elements substituted for parts of M and Si, respectively, to compensate for an electric charge equivalent to x of Li+; and at least one of MA and MB is included. In the composition formula representing the oxide, 0<x≦0.25.
Claims10
A cathode material for a lithium ion secondary battery comprising an oxide represented by a composition formula Li2+x(M,MA) (Si,MB)O4 (wherein M represents at least one element selected from the group consisting of Fe, Mn, Co and Ni;
- MA and MB represent elements substituted for parts of M and Si, respectively, to compensate for an electric charge equivalent to x of Li+;
- and at least one of MA and MB is included), wherein
- in the composition formula representing the oxide, 0<x≦0.25;
- and
- a value of the x is a multiple of 0.03125.
(canceled)
Dependencies are inferred from the claim text.