▎ 摘　　要

This study presents the synthesis of FexSn1-x alloys (0 Fe0Sn1/RGO > Fe0.3Sn0.7/RGO > Fe0.5Sn0.5/RGO > Fe0.7Sn0.3/RGO > Fe0.9Sn0.1/ RGO > Fe1Sn0/RGO, with the Z(w) values of the developed electrodes lower than those of Sn/RGO and Fe/ RGO electrodes. Accordingly, the highest efficiency was 5.0% for the device using Fe0.1Sn0.9/RGO CE, which is also higher than those of devices using Sn/RGO (4.6%) and Fe/RGO (3.8%). The proposed strategy is simple and efficient and is, therefore, promising for the fabrication of cost-effective CE materials for next-generation solar cells and lithium-ion batteries. (c) 2018 Elsevier B.V. All rights reserved.