CARBON FIBER COMPOSITE, PROCESS FOR PRODUCING SAME, CATALYST-CARRYING BODY AND POLYMER ELECTROLYTE FUEL CELL

• Main Authors: KIMURA MITSUHARU, ISOGAI TAKUYA, OOMORI YUMIKO
• Format: Patent
• Language: English; Korean
• Published: 05.11.2014
• Subjects: APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS; BASIC ELECTRIC ELEMENTS; CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOUNDS THEREOF; DERIVATIVES THEREOF; ELECTRICITY; INORGANIC CHEMISTRY; METALLURGY; NATURAL OR ARTIFICIAL THREADS OR FIBRES; NON-METALLIC ELEMENTS; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; POLYSACCHARIDES; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; SPINNING; TEXTILES; THEIR PREPARATION OR CHEMICAL WORKING-UP; THEIR RELEVANT APPARATUS; TRANSPORTING

A conventional catalyst support obtained by making platinum fine particles supported on carbon particles has a problem that the platinum fine particles have undergone agglomeration, insufficient dispersion or the like and therefore are not in such a state that the fine particles of the original sizes are uniformly dispersed on the carbon particles, thus deteriorating the catalytic properties . The problem can be solved by a process for producing a carbon fiber composite which comprises: a step of subjecting metal fine particles of either at least one metal or a compound containing the metal to reductive deposition on fine cellulose having carboxyl groups on the crystal surface to make a composite composed of both the fine cellulose and the metal fine particles; and a step of carbonizing the fine cellulose of the composite to prepare a carbon fiber composite.