ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERIES, MANUFACTURING METHOD THEREOF, AND LITHIUM SECONDARY BATTERY ARRANGED BY USE THEREOF

摘要

PROBLEM TO BE SOLVED: To provide: an active material for lithium secondary batteries which enables the achievement of a higher capacity and a longer life in comparison to conventional ones; a method for manufacturing such an active material; and a lithium secondary battery arranged by use thereof.SOLUTION: Provided are an active material for lithium secondary batteries; a method for manufacturing the active material; and a lithium secondary battery 1 arranged by use thereof. The active material for lithium secondary batteries is to be used for a lithium secondary battery 1. The active material comprises, as a primary component, a composite titanium oxide expressed by the formula, ALiTiO(where A represents at least one element selected from Na and Li), and its crystal structure is NaLiTiOtype tunnel structure of rhombic system.