BATTERY ELECTRODE MATERIAL MANUFACTURE THEREOF AND ELECTROCHEMICAL BATTERY

摘要

PROBLEM TO BE SOLVED: To provide an improved battery electrode material allowing enhancing in battery efficiency. SOLUTION: This battery electrode material is made of fiber fabric selected from among a group comprising carbon fiber, graphite fiber and carbon fiber/ graphite fiber. C-O bonds introduced by plasma treatment, photochemical treatment or ion-implanting treatment are present on a surface of the fiber fabric. The concentration of the C-O bonds gradually decreases toward the inside form the surface of the fiber fabric. The fiber has degree of oxidation such that a ratio (the umber of oxygen atoms)/(the number of carbon atoms) determined by X-ray photoelectron spectroscopy is in a range of 0.1-3.0, while having such a graphitization degree such that an R-value determined by Raman spectroscopic analysis is in a range of 0.1-1.2.