COMPOSITION FOR LITHIUM ION SECONDARY BATTERY POSITIVE ELECTRODE, LITHIUM ION SECONDARY BATTERY POSITIVE ELECTRODE, AND LITHIUM ION SECONDARY BATTERY

A composition for a positive electrode of a lithium ion secondary battery, the composition comprising: an active material capable of storing and extracting lithium ion; and an electric conductive material, wherein the active material is lithium iron phosphate, wherein the conductive material includes carbon black and carbon nanotube, wherein the carbon black has an average primary particle diameter of 39 nm or less, and wherein the carbon nanotube has an average diameter of 20 nm or less.