Electrochemical Hydrogen Evolution Reaction Triggered by Co2xMo1-xS2 (x = 0. 0.05 and 0.1) in Acidic Medium Electrochemical Hydrogen Evolution Reaction Triggered by Co2xMo1-xS2 (x = 0. 0.05 and 0.1) in Acidic Medium

Electrochemical Hydrogen Evolution Reaction Triggered by Co2xMo1-xS2 (x = 0. 0.05 and 0.1) in Acidic Medium

Aruna K Kunhiraman* , Bradha Madhavan

Department of Science and Humanities, Rathinam Technical Campus, Eachanari, Coimbatore, Tamil Nadu 641021, India

Adv. Mater. Lett., 2021, 12 (8), 21081655

DOI: 10.5185/amlett.2021.081655

Publication Date (Web): Jul 05, 2021

E-mail: arunakk2007@gmail.com; aruna.physics@rathinam.in

Abstract


Facile solvothermal route was adopted for the synthesis of Co2xMo1-xS2 with x = 0, 0.05 and 0.1. Higher HER activity was exhibited by x = 0.1 in Co doped MoS2, with a current density -140 mAcm-2 at an overpotential of -100 mV. At lower overpotential both the compositions exhibited almost same activity, whereas with the increase in the overpotential and under continuous electrochemical operation, the active sites of composition with x = 0.1 was triggered and it was reflected in its HER activity.

Keywords

MoS2, chalcogens, hydrogen evolution reaction, electrocatalysis, doping

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