Manufacturing process of foam nickel

Foam nickel of manufacture Craftsmanship
Foam nickel yes A sort of used for manufacture Battery electrode of Material . common of Foam Nickel material material of Production Process as follows : First right Polyurethane sponge conduct Conductive , Then electricity deposition , at last sintering . exist above step middle , Conductive deal with generally include Chemical plating , Paint Conductive plastic and vacuum plating ; electricity deposition Can yes Sulfate or Amino Sulfonate Nickel plated ; existing of sintering Craftsmanship yes pass two steps Finish of : first Will Polyurethane sponge exist Air middle combustion , Then exist hydrogen reduction atmosphere middle reduction sintering . in , Air combustion Polyurethane sponge exist300～700℃ temperature Down Oxidation decarbonization ; reduction deal with for exist800～1000℃ hydrogen reduction atmosphere condition Down reduction30～60 minute , reduction atmosphere for ammonia break down gas , break down Qi disappears consume0.8～1.2l/g(0.8～1.2l) per gram nickel consume ammonia break down gas) Improve of Foam nickel preparation method , include Polyurethane sponge , electricity deposition and sintering step , That feature lies in , described sintering step yes Will electricity deposition Foam Polyurethane direct exist reduction furnace middle Pyrolysis sintering . atmosphere , in reduction atmosphere for ammonia break down gas , reduction temperature for400～1000℃ , reduction time for30～60 minute , break down Qi disappears consume0.4～0.8l/g . ( per gram nickel consume ammonia break down gas0.4-0.8 Lift ) ammonia break down gas for Nitrogen and hydrogen of mixture , Nitrogen and hydrogen of volume Ratio is1:3 . reaction mechanism yes electricity deposition back , Contains nickel Polyurethane sponge exist hydrogen reduction atmosphere Zhongzhi catch Pyrolysis sintering . carbon and hydrogen reaction generate gaseous hydrocarbons , For exampleCH4 andC2H6 . above gasification process sufficient Remove Porous body middle of graphiteC . Book Utility model efficient solve Got it existing technology middle Foam nickel easy crack , deformation , rise arch , Yield Low , Energy consumption high , Mechanical properties unstable Certainly wait defect . sintering process middle of Foam nickel wait . because remove Got it Tradition method middle of Air Calcined step ( Right now Oxidation step ) , direct exist reduction atmosphere middle conduct Pyrolysis sintering , obtain Got it Significantly of Effect