Electroless plating of silver onto graphite
AssigneeHenkel IP & Holding GmbH
InventorsJie CAO, Wenhua Huang, Allison Yue Xiao
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Abstract
A one-pot process for the electroless-plating of silver onto graphite powder is disclosed. No powder pretreatment steps for the graphite, which typically require filtration, washing or rinsing, are required. The inventive process comprises mixing together three reactant compositions in water: an aqueous graphite activation composition comprising graphite powder and a functional silane, a silver-plating composition comprising a silver salt and a silver complexing agent, and a reducing agent composition.
Claims6
-9. (canceled)
An aqueous electroless plating composition for plating graphite with silver comprising:
- (A) graphite, present in the range of 0.1-100 g/L;
- (B) a silver salt, present in the range of 0.01-50 g/L;
- (C) a silver complexing agent, present in the range of 0.01-35 g/L;
- (D) a nitrogen-containing silane present in the range of 0.01-20 w % of the graphite weight;
- (E) a reducing agent for the silver salt, present in the range of 1-50 times the moles of silver salt.
Dependencies are inferred from the claim text.