Positive electrode material for lithium secondary batteries

A positive electrode material for lithium secondary batteries, the material comprising:

• positive electrode active material particles each having a layered structure;
• an electronic conductor disposed on a surface of the positive electrode active material particles;
• and
• optionally a lithium conductor disposed on the surface of the positive electrode active material particles,
• wherein the electronic conductor is a perovskite-type oxide represented by ABO3-δ where A is the combination of La and at least one element selected from the group consisting of Ca, Sr and Ba;
• B is a combination of Co and at least one element selected from the group consisting of Mn and Ni, and δ is an oxygen deficiency value for achieving electrical neutrality,
• wherein in a case where the positive electrode material contains the lithium conductor, the proportion of the lithium conductor disposed at planes other than the (003) plane of the positive electrode active material particles, with respect to a total amount of the lithium conductor disposed on the surface of the positive electrode active material particles, is not less than 50% and not more than 100%;
• the proportion of the electronic conductor disposed at the (003) plane of the positive electrode active material particles, with respect to at total amount of the electronic conductor disposed on the surface of the positive electrode active material particles, is not less than 50% and not more than 100%.