Positive electrode material, negative electrode material, positive electrode for lithium-ion secondary battery, negative electrode for lithium-ion secondary battery, lithium-ion secondary battery, electrolyte for lithium-ion secondary battery, electrode slurry for lithium-ion secondary battery

摘要

PROBLEM TO BE SOLVED: To provide an electrode material capable of reducing capacity drop accompanying charge/discharge cycles more than before even when working voltage of a lithium ion secondary battery is set equal to or more than 4.5 V, and also to provide an electrode for a lithium ion secondary battery, the lithium ion secondary battery, an electrolyte for the lithium ion secondary battery, and electrode slurry for the lithium ion secondary battery.SOLUTION: A positive electrode material is characterized in containing a positive electrode active material, and a covering material covering the positive electrode active material and consisting of at least one kind selected from the group consisting of a polymer having at least one of constitutional units represented by general formula (1) and general formula (2).SELECTED DRAWING: None