FUEL CELL, METHOD FOR MANUFACTURING FUEL CELL, ELECTRONIC APPARATUS, ENZYME IMMOBILIZATION ELECTRODE, BIOSENSOR, BIOREACTOR, ENERGY CONVERSION ELEMENT, AND ENZYME REACTION-UTILIZING APPARATUS

• Main Authors: SAKAI HIDEKI, KAKUTA MASAYA, MATSUMOTO RYUHEI, TOKITA YUICHI
• Format: Patent
• Language: English
• Published: 31.03.2011
• Subjects: BASIC ELECTRIC ELEMENTS; BEER; BIOCHEMISTRY; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; COMPOSITIONS THEREOF; CULTURE MEDIA; ELECTRICITY; ENZYMOLOGY; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; METALLURGY; MICROBIOLOGY; MICROORGANISMS OR ENZYMES; MUTATION OR GENETIC ENGINEERING; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; PROPAGATING, PRESERVING OR MAINTAINING MICROORGANISMS; REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION; SPIRITS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; VINEGAR; WINE

A fuel cell and a method for manufacturing the same are provided, wherein at least one type of enzyme and coenzyme are confined in a minute space, an enzyme reaction is effected while this space serves as a reaction field. Thereby, electrons can be taken out of the fuel efficiently to generate electrical energy, and immobilization of these enzyme and coenzyme on an electrode can be performed easily. The enzyme and the coenzyme required for an enzyme reaction are encapsulated in a liposome, and the resulting liposome is immobilized on the surface of an electrode formed from porous carbon or the like so as to form an enzyme immobilization electrode. A transporter is incorporated in the liposome, as necessary. An electron mediator is also immobilized on the surface of the electrode. The resulting enzyme immobilization electrode is used as, for example, a negative electrode of a biofuel cell.