Composite Electrode Active Material for Non-Aqueous Electrolyte Secondary Battery or Non-Aqueous Electrolyte Electrochemical Capacitor and Method for Producing the Same

摘要

Disclosed is a composite electrode active material for non-aqueous electrolyte secondary batteries or non-aqueous electrolyte electrochemical capacitors which contains a material A containing an element capable of forming an alloy with lithium, a material B containing carbon excluding carbon nanofiber, a catalyst element for promoting the growth of carbon nanofiber, and carbon nanofibers grown on at least one selected from the surface of the material A and the surface of the material B.