Cathode material for lithium-ion secondary battery, cathode for lithium-ion secondary battery, and lithium-ion secondary battery
A cathode material for a lithium-ion secondary battery includes a cathode material A which includes central particles of a cathode active material represented by Li x A y M z PO 4 and a carbonaceous film with which surfaces of the central particles are coated and a cathode material B which is represented by Li x A y M z PO 4 and is made of primary particles of a cathode active material having an olivine structure.
1. A cathode material for a lithium-ion secondary battery comprising:
a cathode material A which comprises central particles of a cathode active material consisting of LiFePO 4 , or LiMn 0.7 Fe 0.3 PO 4 , and a carbonaceous film formed on a surface of the central particles; and
a cathode material B which comprises primary particles of a cathode active material consisting of LiFePO 4 , or LiMnPO 4 , in a mass ratio between the cathode active material A and the cathode active material B (the cathode active material B/the cathode active material A) being 0.01 or more and 0.053 or less.
2. A cathode for a lithium-ion secondary battery comprising:
the cathode material for a lithium-ion secondary battery according to claim 1 .
3. A lithium-ion secondary battery comprising:
a cathode;
an anode; and
a non-aqueous electrolyte,
wherein the cathode is the cathode for the lithium-ion secondary battery according to claim 2 .