Nickel foam

C - Chemistry – Metallurgy – 22 – B

Patent

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Details

319/102, 53/21,

C22B 5/20 (2006.01) B01D 39/20 (2006.01) B22F 3/11 (2006.01) C22B 23/00 (2006.01) C22B 23/02 (2006.01) C22C 1/08 (2006.01) C23C 16/16 (2006.01) H01M 4/80 (2006.01)

Patent

CA 2019023

The invention provides a nickel foam and a method of forming a nickel foam for a nickel containing battery. An open-cell foam structure is placed in a nickel carbonyl gas containing structure. The foam structure is heated to a temperature at which nickel carbonyl decomposes. Nickel from the nickel carbonyl gas decomposes on the foam structure to form a nickel plated foam structure. The nickel plated foam structure is then sintered leaving an open-cell nickel network to form the nickel foam. The open-cells of the nickel foam comprise substantially hollow nickel wires having a substantially uniform transverse cross-section. The nickel foam is further characterized by the conductivity through the nickel foam multiplied by a factor of 3.4 being equal to or greater than the theoretical conductivity of nickel.

'invention porte sur une mousse nickelée et une méthode de formation d'une mousse nickelée pour une pile contenant du nickel. Une structure de mousse à alvéoles ouverts est placée dans une structure contenant du nickel-carbonyle gazeux. La structure de mousse est chauffée à une température à laquelle le nickel-carbonyle se décompose. Le nickel du nickel-carbonyle gazeux se décompose sur la structure de mousse pour former une structure de mousse nickelée. La structure de mousse nickelée est ensuite frittée laissant un réseau nickelé d'alvéoles ouverts pour former la mousse nickelée. Les alvéoles ouverts de mousse nickelée comprennent des fils de nickel substantiellement creux de section substantiellement uniforme. La mousse nickelée se caractérise par le fait que la conductivité à travers la mousse nickelée multipliée par un facteur de 3,4 est égale ou supérieure à conductivité théorique du nickel.

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