Where is the nickel foam extracted from?

Nickel foamis a Material used tomanufacture battery electrodes,the general nickel Foam material manufacturing method is: first conductive polyurethane sponge, then electrodeposition, and finally sintering.

In this process, electroplating generally use chemical plating, electroplating conductive adhesive and vacuum plating three methods; electrodeposition can be used sulfate or sulfamate nickel plating; purpose of the sintering process is to burn off the polyurethane sponge in the air in a hydrogen reduction atmosphere for sintering reduction of the two methods, in which the air burned off the polyurethane sponge using the oxidation of 300~700 ℃ decarburization; in 800~1000 ℃ hydrogen reducing atmosphere for 30~60 minutes for sintering reduction, the reducing atmosphere being ammonia decomposition gas with a decomposition gas consumption of 0.8~1.2 L/g (0.8~1.2 liters of ammonia decomposition gas per gram of nickel).

This method relates to a method of preparing nickel foam from polyurethane sponge by conductivization, electrodeposition and sintering, characterized in that the sintering step is direct pyrolytic electrodeposition of the foam polyurethane in a reducing atmosphere, wherein the reducing atmosphere is ammonia decomposition gas, the reducing temperature is 400-1000°C, the reducing time is 30-60 minutes, and the consumption of decomposition gas is 0.4-0.8 L/g. Ammonia decomposition gas (consumption of 0.4-0.8 L/g of nickel per gram). 0.4-0.8 L of ammonia decomposition gas) is a mixture of nitrogen and hydrogen with a volume ratio of 1:3.

The reaction mechanism is in the hydrogen reduction atmosphere, with electrodeposition of nickel foam containing polyurethane sponge direct pyrolysis sintering, carbon and hydrogen, resulting in gaseous hydrocarbons, such as CH4, C2H6, this gasification process can make the graphite in the porous body of the C cleaner removal.