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Arunprasath Sathyaseelan(사샤실란 아룬프라샤스),Vimal Kumar Mariappan(마리아판 비말 쿠마르),Dhanasekar Kesavan(케사반 다나셰이커),Sang-Jae Kim(김상재) 대한기계학회 2021 대한기계학회 춘추학술대회 Vol.2021 No.4
In this work, we are reporting the use of copper sulfide (CuS) nanostructure as a cost-effective and high-performance bifunctional catalyst for electrochemical hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). Herein, CuS nanostructures were prepared via a facile hydrothermal method, and its in-depth physico-chemical characterizations such as XRD, laser Raman and XPS analysis indicated the formation of flower like CuS nanostructures. Linear sweep voltammetric analysis for the CuS electrocatalyst demonstrated their superior electrocatalytic properties for effectively driving HER and OER reactions with an overpotential of 181 and 354 mV (10 mA cm<sup>-2</sup>) in 1.0 M KOH electrolyte. This work promises the reliability of transition metal-based chalcogenides for green energy production.