POSITIVE ELECTRODE ACTIVE MATERIAL FOR FLUORIDE ION SECONDARY BATTERIES, POSITIVE ELECTRODE USING SAID ACTIVE MATERIAL, FLUORIDE ION SECONDARY BATTERY, AND METHOD FOR PRODUCING SAID ACTIVE MATERIAL

摘要

Provided are: a positive electrode active material for fluoride ion secondary batteries, which enables the achievement of a fluoride ion secondary battery that is able to sufficiently operate even in a low temperature environment; a positive electrode which uses this active material; a fluoride ion secondary battery; and a method for producing this active material. This positive electrode active material for fluoride ion secondary batteries is composed of a composite fluoride that contains a first component which is composed of a metal and a second component which is composed of a fluorine compound that has fluoride ion conductivity.