ELETRODE MATERIAL FOR LITHIUM ION SECONDARY BATTERY, ELECTRODE FOR LITHIUM ION SECONDARY BATTERY, AND LITHIUM ION SECONDARY BATTERY

摘要

An electrode material for a lithium ion secondary battery of the present invention includes an electrode active material made of LiFexMn1-x-yMyPO4 (0.05≦x≦0.35, 0.005≦y≦0.14) in which the M is at least one selected from Co and Zn which are elements that are electrochemically inactive in a voltage range of 1.0 V to 4.3 V and have a smaller ionic radius than Mn, a crystal structure is orthorhombic, a space group is Pmna, values of crystal lattice constants a, b, and c satisfy 10.28 Å≦a≦10.42 Å, 6.000 Å≦b≦6.069 Å, and 4.710 Å≦c≦4.728 Å, and lattice volume V satisfies 289.00 Å3≦V≦298.23 Å3.

主权项

1. An electrode material for a lithium ion secondary battery comprising:
an electrode active material made of LiFexMn1-x-yMyPO4 (0.05≦x≦0.35, 0.005≦y≦0.14), wherein the M is at least one selected from Co and Zn which are elements that are electrochemically inactive in a voltage range of 1.0 V to 4.3 V and have a smaller ionic radius than Mn, and a crystal structure is orthorhombic, a space group is Pmna, values of crystal lattice constants a, b, and c satisfy 10.28 Å≦a≦10.42 Å, 6.000 Å≦b≦6.069 Å, and 4.710 Å≦c≦4.728 Å, and lattice volume V satisfies 289.00 Å3≦V≦298.23 Å3.