A New Spherical Catalyst for Hydrogen Evolution Reaction

CuFeZn kompozit katalizörleri, hidrojen indirgenme reaksiyonu (HER) için elektrokimyasal malzemeler olarak elektrokimyasal biriktirme ile grafit elektrotu üzerinde hazırlanmıştır. Sodyum hidroksit çözeltideki aşındırma işlemi, çinkoyu yüzeyden uzaklaştırmak ve hidrojen indirgeme için gözenekli bir elektrokatalitik yüzey üretmek için katalizörler üzerinde uygulanmıştır. Yüzey morfolojileri taramalı elektron mikroskobu ile araştırıldı. HER aktivitesi katodik akım-potansiyel eğrileri, dönüşümlü voltametri, elektrokimyasal impedans spektroskopisi ve elektroliz teknikleri kullanılarak değerlendirildi. Sonuçlar, aşındırılmış katalizörlerin, alkali ortamlarda HER için iyi bir elektrokatalitik aktivitenin yanı sıra, kompakt ve gözenekli bir yapıya sahip olduğunu göstermektedir

Hidrojen İndirgenme Reaksiyonu için Yeni Bir Küresel Katalizör

CuFeZn composite catalysts have been prepared on the graphite electrode by electrochemical deposition as electrocatalytic materials for hydrogen evolution reaction (HER). The etching process was applied on catalysts in caustic solution to leach out zinc and to produce a porous electrocatalytic surface for hydrogen evolution. The surface morphologies were investigated by scanning electron microscopy. HER activity is assessed by recording cathodic current–potential curves, cyclic voltammetry, electrochemical impedance spectroscopy and electrolysis techniques. The results show that etched catalysts have a compact and porous structure as well as a good electrocatalytic activity for the HER in alkaline media

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