Phagraphene is a novel 2D carbon allotrope with interesting electronicproperties which has been recently theoretically proposed. Phagraphene issimilar to a defective graphene structure with an arrangement of pentagonal,heptagonal and hexagonal rings. In this study we investigate thermalconductivity and mechanical properties of phagraphene using molecular dynamicssimulations. Using the non-equilibrium molecular dynamics method, we found thethermal conductivity of phagraphene to be anisotropic, with room temperaturevalues of $218 \pm 20$ W/m-K along the armchair direction and $285 \pm 29$W/m-K along the zigzag direction. Both values are one order of magnitudesmaller than pristine graphene. Analysis of phonon group velocities also showsa significant reduction in this quantity for phagraphene in comparison tographene. By performing uniaxial tensile simulations, we studied thedeformation process and mechanical response of phagraphene. We found thatphagraphene exhibits a remarkable high tensile strength around $85 \pm 2$ GPa,whereas its elastic modulus is also anisotropic along in-plane directions, withvalues of $870 \pm 15$ GPa and $800 \pm 14$ GPa for armchair and zigzagdirections respectively. The lower thermal conductivity of phagraphene alongwith its predicted electronic properties suggests that it could be a bettercandidate than graphene in future carbon-based thermoelectric devices.
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