燃料電池その他の高温用途のための高温安定性を備えるイオン性液体及びイオン性液体酸、製造方法及びそれを使用する電池 - ARIZONA BOARD OF REGENTS,a body corporate acting on behalf of ARIZONA STATE UNIVERSITY

Title:

燃料電池その他の高温用途のための高温安定性を備えるイオン性液体及びイオン性液体酸、製造方法及びそれを使用する電池

Document Type and Number:

Japanese Patent JP2007500429

Kind Code:

A

Abstract:

Disclosed are developments in high temperature fuel cells including ionic liquids with high temperature stability and the storage of inorganic acids as di-anion salts of low volatility. The formation of ionically conducting liquids of this type having conductivities of unprecedented magnitude for non-aqueous systems is described. The stability of the di-anion configuration is shown to play a role in the high performance of the non-corrosive proton-transfer ionic liquids as high temperature fuel cell electrolytes. Performance of simple H2(g) electrolyte/O2(g) fuel cells with the new electrolytes is described. Superior performance both at ambient temperature and temperatures up to and above 200° C. are achieved. Both neutral proton transfer salts and the acid salts with HSO−4 anions, give good results, the bisulphate case being particularly good at low temperatures and very high temperatures. The performance of all electrolytes is improved by the addition of a small amount of involatile base of pKa value intermediate between those of the acid and base that make the bulk electrolyte. The preferred case is the imidazole-doped ethylammonium hydrogensulfate which yields behavior superior in all respects to that of the industry standard phosphoric acid electrolyte.

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Inventors:

Angel, C., Austin
Sue, Woo
Berriere, Jean-Philippe
Masahiro Yoshizawa

Application Number:

JP2006532544A

Publication Date:

January 11, 2007

Filing Date:

May 03, 2004

Export Citation:

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Assignee:

ARIZONA BOARD OF REGENTS,a body corporate acting on behalf of ARIZONA STATE UNIVERSITY

International Classes:

H01M8/02; H01M8/00; H01M8/14; H01M8/10

Domestic Patent References:

JP2003123791A

2003-04-25

Foreign References:

WO2002063073A1

2002-08-15

Attorney, Agent or Firm:

Hideto Asamura
Hajime Asamura
Katsunori Ando
Yukihiro Ikeda

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