Title:
OXYGEN ELECTRODE CATALYST AND PRODUCTION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2015/146915
Kind Code:
A1
Abstract:
Provided is an oxygen electrode catalyst that achieves a high gravimetric energy density in batteries and reduces the cost of electrodes. This oxygen electrode catalyst includes a fibrous carbon - lanthanum manganese oxide composite material. The fibrous carbon is a carbon nanofiber, a carbon nanotube, or a carbon fiber and the lanthanum manganese oxide is LaMnO3, an oxide (LaMnOx) having an oxygen defect (x being at least 2.5 and less than 3), an A-site replaceable La1-xAxMnO3 (A being Y, Sr, K, or Ca and x being less than 0.5), or a B-site replaceable LaMn1-yByO3 (B being V, Cr, Fe, or Al and y being less than 0.5). This fibrous carbon - lanthanum manganese oxide composite material is obtained by mixing the fibrous carbon in a solution of a lanthanium-source compound and a manganese-source compound and then heat treating same.
Inventors:
KINUMOTO TARO (JP)
Application Number:
PCT/JP2015/058748
Publication Date:
October 01, 2015
Filing Date:
March 23, 2015
Export Citation:
Assignee:
NAT UNIVERSITY CORP OITA UNIVERSITY (JP)
International Classes:
B01J23/34; B01J23/889; B01J37/02; B01J37/04; B01J37/08; H01M4/86; H01M4/88; H01M4/90
Foreign References:
| JP2013176717A | 2013-09-09 | |||
| US20140023939A1 | 2014-01-23 | |||
| JP2014049304A | 2014-03-17 |
Other References:
K.MIYAZAKI ET AL.: "Single-step synthesis of nano-sized perovskite-type oxide/carbon nanotube composites and their electrocatalytic oxygen-reduction activities", J. MATER. CHEM., vol. 21, no. 6, 14 February 2011 (2011-02-14), pages 1913 - 1917, XP055225064
D.THIELE: "Combined platinum/perovskite catalyst for an efficient nanostructured air electrode", MATERIALS CHEMISTRY AND PHYSICS, vol. 124, no. 1, 1 November 2010 (2010-11-01), pages 529 - 534, XP028360764
SHOHEI ONO ET AL.: "LaMnO3-CNF no Sakusei to Alkali Denkaieki-chu deno Sanso Denkyoku Hanno Kassei", 2014 NEN THE ELECTROCHEMICAL SOCIETY OF JAPAN DAI 81 KAI TAIKAI KOEN YOSHISHU, 29 March 2014 (2014-03-29), pages 429
D.THIELE: "Combined platinum/perovskite catalyst for an efficient nanostructured air electrode", MATERIALS CHEMISTRY AND PHYSICS, vol. 124, no. 1, 1 November 2010 (2010-11-01), pages 529 - 534, XP028360764
SHOHEI ONO ET AL.: "LaMnO3-CNF no Sakusei to Alkali Denkaieki-chu deno Sanso Denkyoku Hanno Kassei", 2014 NEN THE ELECTROCHEMICAL SOCIETY OF JAPAN DAI 81 KAI TAIKAI KOEN YOSHISHU, 29 March 2014 (2014-03-29), pages 429
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
Aoki 篤 (JP)
Aoki 篤 (JP)
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