Nickel oxide powder material for solid oxide fuel cell, production process thereof, raw material composition for use in the same, and anode material using the nickel oxide powder material
US8288053B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 10, 2006 |
| Grant date | Oct 16, 2012 |
| Priority date | — |
| Expiry date | Jan 10, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
This invention provides a nickel oxide powder material, a production process thereof with high efficiency, a raw material composition for use in the same, and an anode material using the nickel oxide powder material. The nickel oxide powder material, when used as an anode material for a solid oxide fuel cell, can reduce heat shrinkage percentage in calcination to reduce a shrinkage difference from other component, and can suppress the occurrence of cracking, delamination, warpage and the like during calcining. Also in power generation after re-reduction after exposure of the anode once to an oxidizing atmosphere, for example, due to the disruption of the fuel supply, deterioration of microstructure of the anode can be suppressed, and the voltage drop percentage of the cell can be reduced. The nickel oxide powder material is used in an anode material constituting a solid oxide fuel cell and is characterized in that spinel compound represented by compositional formula: NiM2O4 wherein M represents a metal element is formed inside or on the surface of the nickel oxide powder or at the interface between the powder particles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.