Bimetallic Pd₉₆Fe₄ nanodendrites embedded in graphitic carbon nanosheets as highly efficient anode electrocatalysts

Abstract

Bimetallic Pd–Fe nanoalloys with tunable composition immobilized on graphitic carbon by one-pot radiolytic reduction show high electrocatalytic activity for alcohol oxidation.

Research and innovation in the electrocatalyst development toward glycerol oxidation reaction

“…The most common catalysts that are usually applied in fuel cells for both electrodes are either pure platinum, Pt, or Ptenriched material as anode 13 since Pt nanomaterials S C H E M E 1 Possible products formed through GOR 8 deliberated as the most active electrocatalyst (Scheme 2). 14 However, Pt material is a scarce natural abundance 13,15,16 and poor resistance against poisonous species imposes significant limitations on its role, primarily when it deals with complex carbon-hydroxyl structure glycerol. 13,17 An expensive material with poor reaction kinetic and high loss of electrochemical surface area, such as Pt catalyst, becomes a hindrance toward DGFCs commercialization.…”

“…13,17 An expensive material with poor reaction kinetic and high loss of electrochemical surface area, such as Pt catalyst, becomes a hindrance toward DGFCs commercialization. 14,18,19 DGFC's strong reliance on the high-cost noble metal Pt usage 20 is an issue that needs to be solved. Developing low-cost catalysts with better kinetics for anodic electrooxidation and CO poisoning resistance is very desirable.…”

“…Ghosh et al, 14 the only group researched on Pd-Fe combination, synthesized the catalyst at various Pd/Fe molar ratios with graphitic carbon nanosheets (GCNs) support. The combination of Pd-Fe/GCNs displayed random distribution and severe aggregation of smaller NPs with nanoflower structure (Scheme 10).…”

“…S C H E M E 1 0 TEM images of Pd-Fe nanoalloys deposited on GCNs14 [Colour figure can be viewed at wileyonlinelibrary.com]…”

Conducting Polymer-Based Nanohybrids for Fuel Cell Application

“…Up until now, it has been demonstrated that carbon supports such as carbon black, carbon nanotubes (CNTs), carbon fibers, mesoporous carbon, graphitic carbons, graphene etc. with suitable surface properties and functional groups can be used for metal NP deposition to fabricate efficient catalysts FCs [ 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 ]. However, significantly lower interactions between hydrophobic surfaces of carbon supports with the catalyst and corrosion of supporting materials under experimental conditions hinder high catalytic activity and durability, which remain a significant challenge [ 27 , 28 ].…”