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OXYGEN ELECTRODE CATALYST AND PRODUCTION METHOD THEREFOR

Foreign code F160008728
File No. S2014-0730-C0
Posted date Apr 20, 2016
Country WIPO
International application number 2015JP058748
International publication number WO 2015146915
Date of international filing Mar 23, 2015
Date of international publication Oct 1, 2015
Priority data
  • P2014-070585 (Mar 28, 2014) JP
  • P2015-053955 (Mar 17, 2015) JP
Title OXYGEN ELECTRODE CATALYST AND PRODUCTION METHOD THEREFOR
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.
Scope of claims (In Japanese)[請求項1]
繊維状炭素-ランタンマンガン酸化物複合材料を含む酸素電極触媒であり、ここで前記繊維状炭素はカーボンナノファイバー、カーボンナノチューブまたは炭素繊維であり、かつ前記ランタンマンガン酸化物はLaMnO3、酸素欠陥を有する酸化物LaMnOx(xは2.5以上、3未満)、Aサイト部分置換型La1-xAxMnO3(AはY、Sr、KもしくはCa、xは0.5未満)、またはBサイト部分置換型LaMn1-yByO3(BはV、Cr、FeもしくはAl、yは0.5未満)である酸素電極触媒。
[請求項2]
前記繊維状炭素100質量部に対し前記ランタンマンガン酸化物が1~50質量部の質量比である請求項1に記載の酸素電極触媒。
[請求項3]
ランタン源化合物およびマンガン源化合物を溶液とし、繊維状炭素を混合した後に、熱処理して繊維状炭素-ランタンマンガン酸化物複合材料を得ることを特徴とする繊維状炭素-ランタンマンガン酸化物複合材料を含む酸素電極触媒の製造方法。
[請求項4]
前記溶液にさらに第四級塩を添加する請求項3に記載の酸素電極触媒の製造方法。
[請求項5]
前記第四級塩がアンモニウム塩またはホスホニウム塩である請求項4に記載の酸素電極触媒の製造方法。
  • Applicant
  • ※All designated countries except for US in the data before July 2012
  • NATIONAL UNIVERSITY CORPORATION OITA UNIVERSITY
  • Inventor
  • KINUMOTO TARO
IPC(International Patent Classification)
Specified countries National States: AE AG AL AM AO AT AU AZ BA BB BG BH BN BR BW BY BZ CA CH CL CN CO CR CU CZ DE DK DM DO DZ EC EE EG ES FI GB GD GE GH GM GT HN HR HU ID IL IN IR IS KE KG KN KP KR KZ LA LC LK LR LS LU LY MA MD ME MG MK MN MW MX MY MZ NA NG NI NO NZ OM PA PE PG PH PL PT QA RO RS RU RW SA SC SD SE SG SK SL SM ST SV SY TH TJ TM TN TR TT TZ UA UG US UZ VC VN ZA ZM ZW
ARIPO: BW GH GM KE LR LS MW MZ NA RW SD SL SZ TZ UG ZM ZW
EAPO: AM AZ BY KG KZ RU TJ TM
EPO: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
OAPI: BF BJ CF CG CI CM GA GN GQ GW KM ML MR NE SN ST TD TG

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