Metal-Coated Silver Nanowires for Thermal Stability

The patent applies composite materials by coating silver nanowires with a different metal (such as copper, nickel, or palladium) to create a core-shell structure. This composite approach allows the inner silver core to maintain its high electrical conductivity while the outer metal shell provides thermal stability and prevents morphological changes at elevated temperatures, thus resolving the contradiction between electrical conductivity and thermal stability.

The patent applies preliminary anti-action by pre-coating the silver nanowires with a thermally stable metal layer before subjecting them to high-temperature processing. This preliminary coating creates a protective barrier that counteracts the harmful thermal effects during processing, preventing morphological changes and balling up even when heated to high temperatures, thus enabling higher processing temperatures without sacrificing nanowire morphology.

The patent applies mechanics substitution by replacing mechanical coating methods (such as physical vapor deposition or manual coating) with electroless deposition, which is a chemical self-coating process. This chemical approach eliminates the need for complex mechanical equipment and multi-step coating procedures, simplifying the manufacturing process while still achieving uniform metal coating on the silver nanowire surfaces, thus enhancing thermal stability without significantly increasing manufacturing complexity.