Arizona State University Develops Graphene-Enhanced Composite for 550-850°C Applications
Researchers at Arizona State University have developed an advanced electrical conductor composed of copper layered with nickel, silver, and graphene shells, designed to maintain low resistivity and high current density in extreme temperature environments ranging from 550 to 850°C .
Technical Innovation:
Combining experimental analysis with molecular dynamics and finite element simulations, this composite leverages graphene's unique diffusion barrier properties to significantly reduce metal interdiffusion and preserve structural integrity .
Performance Advantages:
29.3% lower resistivity compared to NiAgCu at high temperatures
34% lower resistivity compared to NiGCu after heat exposure
Graphene layer acts as an effective diffusion barrier for enhanced thermal stability
Maintains higher current density limits under ultrahigh temperature conditions
Potential Applications:
Aerospace industries requiring reliable high-temperature conductors, electric vehicles operating in extreme thermal conditions, military technologies, and high-temperature electronics and power systems .
