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Hydrogen-containing electrically conductive inorganic compound achieved

Foreign code F110005318
File No. E06013US
Posted date Aug 31, 2011
Country United States of America
Application number 51171503
Gazette No. 20050279279
Gazette No. 7662357
Date of filing Apr 18, 2003
Gazette Date Dec 22, 2005
Gazette Date Feb 16, 2010
International application number JP2003005016
International publication number WO2003089373
Date of international filing Apr 18, 2003
Date of international publication Oct 30, 2003
Priority data
  • P2002-117314 (Apr 19, 2002) JP
  • 2003WO-JP05016 (Apr 18, 2003) WO
Title Hydrogen-containing electrically conductive inorganic compound achieved
Abstract (US7662357)
Disclosed is a 12CaO.7Al2O3 compound, a 12SrO.7Al2O3 compound, or a mixed crystal compound of 12CaO.7Al2O3 and 12SrO.7Al2O3, which contains a negative hydrogen ion (H-, H2-, H2- at a concentration of 1x1018 cm-3 or more.
A negative hydrogen ion comprising a primary component of a hydride ion is incorporated into C12A7 (12CaO.7Al2O3), so that a function of being converted from an insulative material to an electrically conductive material in a sustained manner by means of irradiation with light can be exhibited even in the normal atmosphere at a room temperature.
The present invention also provides a solid electrolyte capable of conducting a negative hydrogen ion, and means for releasing a hydride ion from the inside of a solid into a gaseous phase using an electric field.
Scope of claims [claim1]
1. A 12CaO.7Al2O3 compound, which incorporates a negative hydrogen ion (H-, H2-, H2-) at a concentration of 1 * 1018 cm-3 or more, which has an electronic conductance equivalent to an electric conductivity of 10-5 Scm-1 or more at a room temperature.
[claim2]
2. A 12SrO.7Al2O3 compound, which incorporates a negative hydrogen ion (H-, H2-, H2-) at a concentration of 1 * 1018 cm-3 or more, which has an electronic conductance equivalent to an electric conductivity of 10-5 Scm-1 or more at a room temperature.
[claim3]
3. A mixed crystal compound of 12CaO.7Al2O3 and 12SrO.7Al2O3, which incorporates a negative hydrogen ion (H-, H2-, H2-) at a concentration of 1 * 1018 cm-3 or more, which has an electronic conductance equivalent to an electric conductivity of 10-5 Scm-1 or more at a room temperature.
[claim4]
4. A method of producing the compound as defined in claim 1, comprising subjecting a 12CaO.7Al2O3 compound, to a heat treatment at a temperature of 800 deg. C. or more in an atmosphere containing 1000 ppm or more of hydrogen, to thereby clathrate a negative hydrogen ion (H-, H2-, H2-) into said selected compound at a concentration of 1 * 1018 cm-3 or more, and further irradiate said selected compound with ultraviolet ray or X-ray.
[claim5]
5. A method of producing the compound as defined in claim 2, comprising subjecting a 12SrO.7Al2O3 compound to a heat treatment at a temperature of 800 deg. C. or more in an atmosphere containing 1000 ppm or more of hydrogen, to thereby clathrate a negative hydrogen ion (H-, H2-, H2-) into said selected compound at a concentration of 1 * 1018 cm-3 or more, and further irradiate said selected compound with ultraviolet ray or X-ray.
[claim6]
6. A method of producing the compound as defined in claim 3, comprising subjecting a mixed crystal compound of 12CaO.7Al2O3 and 12SrO.7Al2O3 to a heat treatment at a temperature of 800 deg. C. or more in an atmosphere containing 1000 ppm or more of hydrogen, to thereby clathrate a negative hydrogen ion (H-, H2-, H2-) into said selected compound at a concentration of 1 * 1018 cm-3 or more, and further irradiate said selected compound with ultraviolet ray or X-ray.
[claim7]
7. The compound as defined in any one of claims 1 to 3, wherein the compound is included in a transparent electrode or wiring.
[claim8]
8. The compound as defined in any one of claims 1 to 3, wherein the compound is included in an optically writable and erasable 3-dimensional electronic circuit and 3-dimensional storage element.
[claim9]
9. The compound as defined in any one of claims 1 to 3, wherein the compound is included in a negative-hydrogen-ion-conducting solid-electrolyte.
  • Inventor, and Inventor/Applicant
  • HOSONO HIDEO
  • HIRANO MASAHIRO
  • HAYASHI KATSURO
  • JAPAN SCIENCE AND TECHNOLOGY AGENCY
IPC(International Patent Classification)
Reference ( R and D project ) ERATO HOSONO Transparent ElectroActive Materials AREA
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