Title:
OXYGEN REDUCTION ELECTRODE CATALYST, ELECTRODE CATALYST FOR HYDROGEN GENERATION REACTION, AND ELECTRODE
Document Type and Number:
WIPO Patent Application WO/2015/076375
Kind Code:
A1
Abstract:
To further improve the activity of an oxygen reduction electrode catalyst which uses boron nitride (BN). Oxygen reduction reaction activity is improved, in comparison to an electrode wherein a BN thin film is supported, by having the surface of Au or the like support a BN nanosheet. The activity can be further enhanced by having the BN nanosheet support Au fine particles. Vitreous carbon can be used for a substrate by having the BN nanosheet support Au fine particles. The oxygen reduction reaction activity can be further improved by using a BNNS that is further reduced in size.
Also provided are: an electrode catalyst having high hydrogen generation reaction activity; and an electrode catalyst having high hydrogen generation reaction activity but not having hydrogen oxidation reaction activity, said hydrogen oxidation reaction being the reverse reaction of hydrogen generation reaction. High hydrogen generation reaction activity can be achieved by having the surface of Au substrate or the like support a BN nanosheet. The activity can be further improved by having the BN nanosheet support fine particles of Au or the like. An electrode catalyst which uses Au as a substrate has high hydrogen reaction activity but does not have hydrogen oxidation reaction activity.
Inventors:
UOSAKI KOHEI (JP)
NOGUCHI HIDENORI (JP)
NOGUCHI HIDENORI (JP)
Application Number:
PCT/JP2014/080923
Publication Date:
May 28, 2015
Filing Date:
November 21, 2014
Export Citation:
Assignee:
NAT INST FOR MATERIALS SCIENCE (JP)
International Classes:
H01M4/90; B01J27/24; B01J35/02; H01M4/92
Domestic Patent References:
| WO2006087928A1 | 2006-08-24 |
Foreign References:
| JP2013230415A | 2013-11-14 | |||
| JP2011079715A | 2011-04-21 | |||
| JP2008311223A | 2008-12-25 | |||
| JP2013058429A | 2013-03-28 | |||
| JP2011134477A | 2011-07-07 | |||
| CN103203462A | 2013-07-17 | |||
| CN102976295A | 2013-03-20 | |||
| CN103130236A | 2013-06-05 |
Other References:
YOSHIO BANDO ET AL.: "Synthesis and Property of BN Nanotubes and Nanosheetes", JOURNAL OF THE SURFACE SCIENCE SOCIETY OF JAPAN, vol. 33, no. 10, 2012, pages 569 - 574
ANDREY LYALIN: "Theoretical predictions for hexagonal BN based nanomaterials as electrocatalysts for the oxygen reduction reaction", PHYS. CHEM. CHEM. PHYS, vol. 15, 17 December 2012 (2012-12-17), pages 2809 - 2820
ANDREY LYALIN ET AL.: "Functionalization of Monolayer h-BN by a Metal Support for the Oxygen Reduction Reaction", J. PHYS. CHEM.C, vol. 117, 17 September 2013 (2013-09-17), pages 21359 - 21370
CHUNYI ZHI ET AL.: "Large- Scale Fabrication of Boron Nitride Nanosheets and Their Utilization in Polymeric Composites with Improved Thermal and Mechanical Properties", ADV. MATER., vol. 21, 2009, pages 2889 - 2893
ANDREY LYALIN: "Theoretical predictions for hexagonal BN based nanomaterials as electrocatalysts for the oxygen reduction reaction", PHYS. CHEM. CHEM. PHYS, vol. 15, 17 December 2012 (2012-12-17), pages 2809 - 2820
ANDREY LYALIN ET AL.: "Functionalization of Monolayer h-BN by a Metal Support for the Oxygen Reduction Reaction", J. PHYS. CHEM.C, vol. 117, 17 September 2013 (2013-09-17), pages 21359 - 21370
CHUNYI ZHI ET AL.: "Large- Scale Fabrication of Boron Nitride Nanosheets and Their Utilization in Polymeric Composites with Improved Thermal and Mechanical Properties", ADV. MATER., vol. 21, 2009, pages 2889 - 2893
Attorney, Agent or Firm:
ASAMURA PATENT OFFICE, p. c. (JP)
Patent business corporation Asamura patent firm (JP)
Patent business corporation Asamura patent firm (JP)
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