| Abstract Scope |
Graphene additives into FCC metals enhance the electrical conductivity in contrast with conventional understanding, i.e., impurities in metals reduce electrical conductivity. The primary limitation to electrical conduction in FCC metals is grain boundaries. By incorporating single- and double-layer graphene on metal grains, we show that graphene is structurally commensurate with FCC aluminum (111), potentially ameliorating scattering by grains [1]. Next, we show that the electronic conductivity of double-layer aluminum-graphene composites vary non-monotonically with temperature, showing an increase within the temperature range of 300-400 K. However, single-layer composites do not show such trend [1]. These findings are consistent with experimental observation in solid-phase processed metal-graphene composites [2, 3].
References:
1. K. Nepal et. al., Appl. Phys. Lett. 124, 091902 (2024)
2. A. Nittala et. al., Materials Science and Engineering:B 293, 116452 (2023)
3. B. Gwalani et. al., Materials and Design 237, 112555 (2023) |