Hydrothermal Synthesis of Zinc Cobalt Telluride Nanorod towards Oxygen Evolution Reaction (OER)

Abstract With an increasing demand for clean and sustainable energy which is directly related to water splitting, regenerative fuel cells, metal-air batteries, etc., exploring an efficient and inexpensive electrocatalyst with highly stable for oxygen evolution reaction (OER) is very important. In this article, here we demonstrated the nanorod Zn-Co-Te, is found to be a very good electrocatalyst for oxygen evolution reaction (OER) in alkali medium (KOH, pH = 15.14) with onset potential 1.38 V vs RHE. When this catalyst used as an electrocatalyst Zn-Co-Te nanorod obtained low overpotential 221 mV at a 10 mAcm−2 current density with Tafel slope 91 mV/dec and high stability within three months.</jats:p

A facile route for the synthesis of nickel foam modified WSe₂:CdS nanohybrid as an efficient catalyst for hydrogen evolution reaction (HER)

Abstract Nickel foam was synthesized via a easy and time consuming method with the help of microwave, the nickel foam was then modified with very impressive rod shaped nanoparticle WSe2-CdS. The pores of the nickel foam are very clear and uniform in size with the nanoparticle attached in the surface of the foam. The prepared nanohybrid foam (Nifoam@WSe2-CdS) shows good performance towards hydrogen evolution reaction with small onset potential of -0.30 V and very low tafel slope that is 44 mV/dec. The electrocatalyst was prepared with earth abundant material with low cost of synthesis. Prepared electrocatlyst shows high durability over acidic medium for several time periods with unchanged electrochemical behavior.</jats:p

Ag-Cd-B-P ternary alloy with efficient electrocatalytic activity towards hydrogen evolution reaction (HER)

Abstract Recently, a stable and effective Pt-free electrocatalyst is hugely required for hydrogen generation through water splitting. In this article, we present an easy synthesis of very small particle sized electrocatalysts Ag-Cd-B-P and Cd-Ag-B-P with good catalytic activity and stability for electrochemical hydrogen evolution reaction in acidic medium. Ag-Cd-B-P catalyst exihibits better performance than Cd-Ag-B-P with lower onset potential of - 0.25 V, higher electrochemical surface area of 0.50 cm2, excellent current density of 1.18 A/cm2 at – 1.29 V, low tafel slop of 118 mV/dec and small overpotential of 50 mV to achieve 10 mA/cm2 current density. The reported Ag-Cd-B-P electrocatalyst shows good storage stability of 2 months in normal condition with only ∼2 % change in onset potential and current density.</jats:p