The role of graphene in enhancing electrical heating and mechanical performances of graphene-aligned silver nanowire hybrid transparent heaters

摘要

In this work, flexible and energy-efficient transparent heaters based on graphene and aligned silver nanowire (G-ASNW) hybrid structures are fabricated by thermal evaporation of silver on the aligned electrospun nanofiber templates and subsequent transfer of monolayer graphene onto the ASNWs. The G-ASNW films exhibit few wire-wire junctions and low resistance along the aligned direction, which are favorable for low-voltage transparent heater applications. Coating the ASNW network with monolayer graphene increases the saturated temperature of the hybrid heater due to the high thermal conductivity and low convective heat-transfer coefficient of graphene. Meanwhile, G-ASNW films show excellent electromechanical stability under cyclic bending because the gra-phene anchoring on the top surface of ASNWs could share tensile stress and serve as local conduct-ing pathways at break-points even if small cracks were generated. The G-ASNW hybrid structures present a perspective on wearable transparent heaters.