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1. WO2007145215 - CARBON PARTICLE HAVING DEPOSITED FINE PARTICLES, PROCESS FOR PRODUCING THE SAME, AND ELECTRODE FOR FUEL CELL

Publication Number WO/2007/145215
Publication Date 21.12.2007
International Application No. PCT/JP2007/061824
International Filing Date 12.06.2007
IPC
H01M 4/96 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4Electrodes
86Inert electrodes with catalytic activity, e.g. for fuel cells
96Carbon-based electrodes
B01J 23/89 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
23Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/113
70of the iron group metals or copper
89combined with noble metals
C01G 49/00 2006.01
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
GCOMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F94
49Compounds of iron
C01G 51/00 2006.01
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
GCOMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F94
51Compounds of cobalt
H01M 4/86 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4Electrodes
86Inert electrodes with catalytic activity, e.g. for fuel cells
H01M 4/88 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4Electrodes
86Inert electrodes with catalytic activity, e.g. for fuel cells
88Processes of manufacture
CPC
B82Y 30/00
BPERFORMING OPERATIONS; TRANSPORTING
82NANOTECHNOLOGY
YSPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
30Nanotechnology for materials or surface science, e.g. nanocomposites
C01B 32/05
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; ; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
32Carbon; Compounds thereof
05Preparation or purification of carbon not covered by groups C01B32/15, C01B32/20, C01B32/25, C01B32/30
C01G 49/0054
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
GCOMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
49Compounds of iron
0018Mixed oxides or hydroxides,
0054containing one rare earth metal, yttrium or scandium
C01G 51/003
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
GCOMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
51Compounds of cobalt
003Preparation involving a liquid-liquid extraction, an adsorption or an ion-exchange
C01G 51/006
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
GCOMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
51Compounds of cobalt
006Compounds containing, besides cobalt, two or more other elements, with the exception of oxygen or hydrogen
C01P 2002/34
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
2002Crystal-structural characteristics
30Three-dimensional structures
34perovskite-type (ABO3)
Applicants
  • 日立マクセル株式会社 Hitachi Maxell, Ltd. [JP]/[JP] (AE, AG, AL, AM, AU, AZ, BA, BB, BF, BH, BJ, BR, BW, BY, BZ, CF, CG, CI, CM, CN, CO, CR, CU, DM, DO, DZ, EC, EG, GA, GD, GE, GH, GM, GN, GQ, GT, GW, HN, HR, ID, IL, IN, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LY, MA, MD, MG, MK, ML, MN, MR, MW, MX, MY, MZ, NA, NE, NG, NI, NO, NZ, OM, PG, PH, RS, RU, SC, SD, SG, SL, SM, SN, SV, SY, SZ, TD, TG, TJ, TM, TN, TT, TZ, UA, UG, UZ, VC, VN, ZA, ZM, ZW)
  • トヨタ自動車株式会社 TOYOTA JIDOSHA KABUSHIKI KAISHA [JP]/[JP] (AllExceptUS)
  • 澤木 裕子 SAWAKI, Yuko [JP]/[JP] (UsOnly)
  • 岸本 幹雄 KISHIMOTO, Mikio [JP]/[JP] (UsOnly)
  • 中西 治通 NAKANISHI, Haruyuki [JP]/[JP] (UsOnly)
  • 村田 成亮 MURATA, Shigeaki [JP]/[JP] (UsOnly)
  • 今西 雅弘 IMANISHI, Masahiro [JP]/[JP] (UsOnly)
Inventors
  • 澤木 裕子 SAWAKI, Yuko
  • 岸本 幹雄 KISHIMOTO, Mikio
  • 中西 治通 NAKANISHI, Haruyuki
  • 村田 成亮 MURATA, Shigeaki
  • 今西 雅弘 IMANISHI, Masahiro
Agents
  • 田中 光雄 TANAKA, Mitsuo
Priority Data
2006-16409513.06.2006JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) CARBON PARTICLE HAVING DEPOSITED FINE PARTICLES, PROCESS FOR PRODUCING THE SAME, AND ELECTRODE FOR FUEL CELL
(FR) PARTICULE DE CARBONE RECOUVERTE DE FINES PARTICULES, SON PROCÉDÉ DE PRODUCTION ET ÉLECTRODE POUR PILE À COMBUSTIBLE
(JA) 微粒子担持カーボン粒子およびその製造方法ならびに燃料電池用電極
Abstract
(EN)
Carbon particles having fine particles deposited thereon which can be used as a substitute for the carbon particles having platinum deposited thereon and platinum metal particles which are presently in general use as, e.g., a catalyst for electrodes in fuel cells. Compared to the conventional carbon particles having platinum deposited thereon, etc., the carbon particles are effective in greatly reducing the amount of platinum to be used. The carbon particles are characterized by comprising carbon particles and, deposited on the surface of the carbon particles, fine particles of a perovskite type composite metal oxide in each of which fine noble-metal particles are present throughout the whole particle. Also provided is a process for producing the carbon particles. The carbon particles having deposited fine particles have a constitution in which fine particles of a perovskite type composite metal oxide each having fine noble-metal particles present throughout the whole perovskite type oxide particle and having a crystallite size of 1-20 nm are deposited on carbon particles. The process for producing such carbon particles having fine particles deposited thereon comprises preparing a solution containing fine perovskite type composite oxide particles and complex ions of a metal for constituting fine noble-metal particles, subsequently repeating the step of infiltrating the solution into carbon particles and drying the particles to thereby adsorb complex ions of the metal onto the carbon particles, and then subjecting the resultant particles to heat treatment.
(FR)
La présente invention concerne des particules de carbone recouvertes de fines particules pouvant être utilisées à la place des particules de carbone recouvertes de platine et des particules à base de platine métallique qui sont actuellement généralement utilisées, par exemple, comme catalyseur pour électrodes dans les piles à combustible. Par rapport aux particules de carbone classiques recouvertes de platine, etc., les particules de carbone sont efficaces pour réduire de manière importante la quantité de platine à utiliser. Les particules de carbone sont caractérisées en ce qu'elles comprennent des particules de carbone et en ce que sont déposées sur la surface des particules de carbone de fines particules d'oxyde métallique composite de type pérovskite dans chacune desquelles de fines particules à base de métaux nobles sont présentes dans la totalité de la particule. L'invention concerne également un procédé de production de particules de carbone. Les particules de carbone recouvertes de fines particules sont constituées de fines particules d'oxyde métallique composite de type pérovskite contenant chacune de fines particules à base de métaux nobles présentes dans la totalité de la particule d'oxyde de type pérovskite et possédant une taille de cristal de 1 à 20 nm déposées sur des particules de carbone. Le procédé permettant de produire ces particules de carbone recouvertes de fines particules comprend la préparation d'une solution contenant de fines particules à base d'oxyde composite de type pérovskite et des ions complexes d'un métal pour constituer de fines particules à base de métaux nobles, la répétition de l'étape d'infiltration de la solution dans des particules de carbone et le séchage des particules pour ainsi adsorber les ions complexes du métal sur les particules de carbone, puis le fait de soumettre les particules résultantes à un traitement thermique.
(JA)
 燃料電池の電極用触媒などに現在一般に利用されている白金担持カーボン粒子や金属白金粒子の代替物として使用でき、しかも従来の白金担持カーボン粒子等と比べると白金の使用量を大幅に減らすことのできる、粒子全体にわたって貴金属微粒子が存在するペロブスカイト型複合金属酸化物微粒子をカーボン粒子表面に担持したことを特徴とする、微粒子担持カーボン粒子とその製造方法を提供する。  ペロブスカイト型酸化物粒子の全体にわたって貴金属微粒子が存在し、且つその結晶子サイズが1~20nmであるペロブスカイト型複合金属酸化物微粒子を、カーボン粒子に担持させた構成とする。このような微粒子担持カーボン粒子を製造する手段として、ペロブスカイト型複合酸化物微粒子および貴金属微粒子を構成する金属の錯イオンを含む溶液を調製し、次いで、得られた溶液をカーボン粒子に含浸させたのち乾燥させるという工程を繰り返すことにより、前記金属の錯イオンをカーボン粒子に吸着させた後、熱処理を施すという方法を採用する。
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