▎ 摘　　要

Well-dispersed Pt1-xSnx alloy nanoparticles (NPs) were stabilized with RGO after a co-reduction of metal precursor ions and graphene oxide via a dry plasma reduction under an atmospheric pressure and close to room temperature. The highest electrocatalytic performance, which corresponds to the lowest charge transfer resistance of 1.12 Omega, is achieved with the Pt0.9Sn0.1 NPs/RGO nanohybrid. The application of the optimized Pt0.9Sn0.1 NPs/RGO nanohybrid as an alternative CE for DSCs results in an increase of the efficiency by 14.67% over that of a Pt/RGO-based DSC and an increase of 48.96% over the efficiency of a Pt-free device. (C) 2016 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.