Honda Motor Co., Ltd.
LITHIUM-ION SECONDARY BATTERY POSITIVE ELECTRODE ACTIVE MATERIAL COMPLEX, LITHIUM-ION SECONDARY BATTERY POSITIVE ELECTRODE, AND LITHIUM-ION SECONDARY BATTERY

Abstract:

A lithium-ion secondary battery positive electrode active material complex, a lithium-ion secondary battery positive electrode, and a lithium-ion secondary battery using the lithium-ion secondary battery positive electrode containing the lithium-ion secondary battery positive electrode active material complex are provided so that a lithium-ion secondary battery having high output properties, excellent durability, and a high energy density can be attained. A positive electrode active material for a lithium-ion secondary battery contains a complex in which a surface of a first positive electrode active material made of a lithium transition metal complex oxide containing nickel is covered with a covering layer containing an olivine type second positive electrode active material on a surface of which carbon is carried and a carbon nanotube.