LITHIUM IRON PHOSPHATE PARTICLE FOR LITHIUM ION SECONDARY BATTERY POSITIVE ELECTRODE MATERIAL AND MANUFACTURING METHOD THEREOF, LITHIUM ION SECONDARY BATTERY POSITIVE ELECTRODE WITH SUCH LITHIUM IRON PHOSPHATE PARTICLE, AND LITHIUM ION SECONDARY BATTERY WITH SUCH POSITIVE ELECTRODE

摘要

PROBLEM TO BE SOLVED: To provide a lithium iron phosphate particle for a lithium ion secondary battery positive electrode material which has a peel strength increased by improvement of a positive-electrode active material.SOLUTION: The lithium iron phosphate particle for a lithium ion secondary battery positive electrode is arranged by using, as a raw material, an iron particle including no less than 0.5 mass% of oxygen. With the lithium iron phosphate particle, the crushing strength defined by JIS Z 8841 concerning a lithium iron phosphate particle for a lithium ion secondary battery positive electrode material is 10 MPa or less.