Development of Efficient Electrocatalysts for Hydrogen Evolution Reaction Her Over a Wide Ph Range

Abstract

Nowadays, hydrogen is regarded as a clean and suitable fuel source for the future, due to its sustainability and eco-friendly properties. Electrochemical water splitting seems to be the most viable technique for achieving maximum purity hydrogen. The development of efficient electrocatalyst is essential for hydrogen evolution reaction (HER). Till now, platinum is the benchmark electrocatalyst for HER, but its high cost and scarcity hinder their commercialization. In order to lower the Pt usage and to achieve the superior electrocatalytic performance, development of cost effective and highly active electrocatalyst is necessary. In this perspective, alloying Pt with Pd metal will reduce the Pt usage and as well as increases their catalytic activity. newlineIn our first work, we successfully developed PdatPt nanoparticles with nanoporous surface supported on Vulcan XC-72 carbon via simple galvanic exchange approach. The phase formation and porous structure were confirmed by structural and microscopic analysis. The CS-PdPt exhibits outstanding electrochemical HER performance in acidic condition, to attain 10 mA cm-2 it needs only 26 mV overpotential that is superior to the commercial Pt/C (32 mV at and#951;10) catalyst. Furthermore, the CS-PdPt nanoparticles demonstrates 46 and 50 mV at and#951;10 in alkaline and neutral solutions, respectively and it showed remarkable stability and durability under wide pH range newline