Recent Developments in Electrocatalysts and Hybrid Electrocatalyst Support Systems for Polymer Electrolyte Fuel Cells

An efficient CoMoS2 nanosheets on nitrogen, sulfur dual doped reduced graphene oxide as an electrocatalyst for the hydrogen evolution reaction

“…As it has its own limitations of being expensive and scarce, it cannot be used for large scale commercial applications creating a need for the development of effective HER catalysts. [1][2][3][4][5][6][7] MoS 2 has been proved to be a potent catalyst 8 which is a two-dimensional layered metal chalcogenide composed of covalently bonded S-Mo-S nanosheets that are bound together by weak Van der Walls forces. It has been experimentally proven that nano-sized MoS 2 has sufficient hydrogen absorption free energy at its edges, whereas its basal plane is either inactive or insulating.…”

“…To date, Pt/C is exclusively used as electrocatalyst for hydrogen evolution reaction (HER). As it has its own limitations of being expensive and scarce, it cannot be used for large scale commercial applications creating a need for the development of effective HER catalysts 1‐7 …”

Improving the electrocatalytic activity for formic acid oxidation of bimetallic Ir–Zn nanoparticles decorated on graphene nanoplatelets

“…Carbon materials have been widely used as electrocatalyst support for PEMFC electrodes because of their large specific surface areas, large pore volumes and high electrical conductivity [23]. Graphene, the 2D monolayer of carbon atoms, has been attracted a significant interest in electrochemical applications due to excellent electronic conductivity and corrosion resistance properties [24]. Graphene nanoplatelets (GNPs) as support for Pt nanoparticles have demonstrated high electrochemical activity and performance durability compared to commercial Pt/C catalyst [25,26].…”