| abstract |
An electrode material for a lithium ion secondary battery, an electrode for a lithium ion secondary battery, and a lithium ion secondary battery capable of improving the battery characteristics, durability and safety of the lithium ion secondary battery are provided. An electrode material for a lithium ion secondary battery according to the present invention has a general formula Li x A y D z PO 4 (where A is at least one selected from Co, Mn, Ni, Fe, Cu and Cr). , D is at least one selected from Mg, Ca, Sr, Ba, Ti, Zn, B, Al, Ga, In, Si, Ge, Sc and Y, 1 ≦ x ≦ 1.1, 0 <y ≦ An electrode material for a lithium ion secondary battery in which the surface of an electrode active material represented by 1, 0 ≦ z <1, 0.9 <y + z ≦ 1) is coated with a carbonaceous film, and includes Karl Fischer ( The saturated adsorbed water content of the carbonaceous film alone, which is detected in the temperature range from room temperature to 250 ° C. by the coulometric titration method) is from 5,000 ppm to 50,000 ppm. [Selection figure] None |