电极
化学
箔法
可逆氢电极
氢
肖特基势垒
化学工程
分析化学(期刊)
作者
Pratik M. Pataniya,C.K. Sumesh
标识
DOI:10.1016/j.jelechem.2022.116270
摘要
• MoS 2 nanosheets were deposited on Cu-electrode for hydrogen evolution reaction. • Electrodes shows low over potential of -70 mV in illuminating condition. • Electrode shows the stability upto 40 hours at current of -10 mA/cm 2 . • Charge transfer resistance of as low as 2.1 Ω cm 2 is achieved. Herein, we demonstrate the MoS 2 /Cu electrodes for photosensitive electrocatalytic hydrogen evolution reaction (HER). Liquid phase exfoliated MoS 2 nanosheets have been deposited Cu foil by electrophoresis technique for preparation of photosensitive and large area electrodes. Electrodes have shown rapid electrocatalytic HER activity with low over potential of -110 mV in dark and -70 mV vs RHE in illuminating condition. Charge transfer resistance of as low as 4.2 Ω cm 2 is realised which is further reduced to 2.1 Ω cm 2 on light illumination owing to injection of photogenerated electrons. Photosensitive behaviour of MoS 2 nanosheets and MoS 2 /Cu Schottky interface leads to the enhanced rate of electrocatalytic reaction. MoS 2 /Cu electrode has shown stability upto 40 hours. Present finding encourages the production of clean energy through HER activity speeding up by illumination visible Sun light.
科研通智能强力驱动
Strongly Powered by AbleSci AI