Title:
PEROVSKITE OXIDE CONTAINING HYDRIDE ION, AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2013/008705
Kind Code:
A1
Abstract:
[Problem] Many oxide-ion conductors exhibit high functionality at high temperatures due to the large weight and charge of the oxide ions, and it has been difficult to achieve the functionality at low temperatures. [Solution] A perovskite oxide having hydride ion conductivity, at least 1 at.% of the oxide ions (O2-) contained in a titanium-containing perovskite oxide being substituted by hydride ions (H-). This oxide, in which negatively charged hydride ions (H-) are used for the ionic conduction, has a combined hydride ion conductivity and electron conductivity. As a starting material, the perovskite-type, titanium-containing oxide is kept together with an alkali metal or alkaline-earth metal hydride powder selected from LiH, CaH2, SrH2, and BaH2 in a temperature range from 300°C to below the melting point of the hydride in a vacuum or an inert gas atmosphere, and some of the oxide ions in the oxide are substituted by the hydride ions to introduce the hydride ions to oxygen sites.
Inventors:
HOSONO HIDEO (JP)
KAGEYAMA HIROSHI (JP)
KOBAYASHI YOJI (JP)
TAKANO MIKIO (JP)
YAJIMA TAKESHI (JP)
KAGEYAMA HIROSHI (JP)
KOBAYASHI YOJI (JP)
TAKANO MIKIO (JP)
YAJIMA TAKESHI (JP)
Application Number:
PCT/JP2012/067157
Publication Date:
January 17, 2013
Filing Date:
July 05, 2012
Export Citation:
Assignee:
TOKYO INST TECH (JP)
UNIV KYOTO (JP)
HOSONO HIDEO (JP)
KAGEYAMA HIROSHI (JP)
KOBAYASHI YOJI (JP)
TAKANO MIKIO (JP)
YAJIMA TAKESHI (JP)
UNIV KYOTO (JP)
HOSONO HIDEO (JP)
KAGEYAMA HIROSHI (JP)
KOBAYASHI YOJI (JP)
TAKANO MIKIO (JP)
YAJIMA TAKESHI (JP)
International Classes:
C01G23/00
Domestic Patent References:
| WO2010105787A1 | 2010-09-23 |
Foreign References:
| JP2007220406A | 2007-08-30 | |||
| JP2006199578A | 2006-08-03 | |||
| JP4374631B2 | 2009-12-02 | |||
| JP2005100978A | 2005-04-14 | |||
| JP4219821B2 | 2009-02-04 |
Other References:
R. WASER: "Solubility and diffusivity of hydrogen defects in BaTi03 ceramics", SCIENCE OF CERAMICS, vol. 14, 1988, pages 383 - 388, XP008172243
S. OHKOSHI ET AL., NATURE CHEMISTRY, vol. 2, 2010, pages 539 - 545
W. GONG ET AL., JOURNAL OF SOLID STATE CHEMISTRY, vol. 90, 1991, pages 320 - 330
S. STEINSVIK ET AL., SOLID STATE IONICS, vol. 143, 2001, pages 103 - 116
K. HAYASHI ET AL., NATURE, vol. 419, 2002, pages 462 - 465
B. MALAMAN; J. F. BRICE, JOURNAL OF SOLID STATE CHEMISTRY, vol. 53, 1984, pages 44 - 54
M. A. HAYWARD ET AL., SCIENCE, vol. 295, 2002, pages 1882 - 1884
C. A. BRIDGES ET AL., ADVANCED MATERIALS, vol. 18, 2006, pages 3304 - 3308
R. M. HELPS ET AL., INORGANIC CHEMISTRY, vol. 49, 2010, pages 11062 - 11068
S. OHKOSHI ET AL., NATURE CHEMISTRY, vol. 2, 2010, pages 539 - 545
W. GONG ET AL., JOURNAL OF SOLID STATE CHEMISTRY, vol. 90, 1991, pages 320 - 330
S. STEINSVIK ET AL., SOLID STATE IONICS, vol. 143, 2001, pages 103 - 116
K. HAYASHI ET AL., NATURE, vol. 419, 2002, pages 462 - 465
B. MALAMAN; J. F. BRICE, JOURNAL OF SOLID STATE CHEMISTRY, vol. 53, 1984, pages 44 - 54
M. A. HAYWARD ET AL., SCIENCE, vol. 295, 2002, pages 1882 - 1884
C. A. BRIDGES ET AL., ADVANCED MATERIALS, vol. 18, 2006, pages 3304 - 3308
R. M. HELPS ET AL., INORGANIC CHEMISTRY, vol. 49, 2010, pages 11062 - 11068
Attorney, Agent or Firm:
NISHI YOSHIYUKI (JP)
West Yoshiyuki (JP)
West Yoshiyuki (JP)
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