Platinum–graphene hybrid nanostructure as anode and cathode electrocatalysts in proton exchange membrane fuel cells

Abstract

Graphene synthesized by an environmentally benign technique is applied as a low cost electrocatalyst support in proton exchange membrane fuel cell.

Ternary composites of Ni–polyaniline–graphene as counter electrodes for dye-sensitized solar cells

“…In DSSCs, graphene does not seem to be the right candidate for a counter electrode, in view of the limited number of active sites for I 3 À /I À electrocatalysis. [30][31][32][33][34][35][36] However, graphene can form an efficient conductive network in the electrode due to its two-dimensional characteristics. Therefore, it could be imagined that the nanocomposites of graphene, Ni and PANI should be able to provide a better performance in DSSCs as the counter electrode.…”

Oxygen reduction reaction activity of platinum nanoparticles decorated nitrogen doped carbon in proton exchange membrane fuel cell under real operating conditions

“…The maximum power densities of the MEA at different temperatures and backpressures are shown in Table 1. Pt/NC could show better performance than platinumecarbon composite [37], platinumegraphene [10,11,38], while it shows lesser performance than Pt dispersed nitrogen doped graphene [37]. For comparison, power densities with different material as ORR electrocatalyst is shown in Table 2.…”

Selective photocatalytic benzene hydroxylation to phenol using surface-modified Cu2O supported on graphene

“…Metal [a] (wt%) N (wt%) C (wt%) S (wt%) Average particle size [b] (nm) Alkanethiol [c] following the so-called polyol method using ethylene glycol as reducing agent at 120 o C for 24 h. It has been shown that the polyol reduction is a convenient and reliable method to obtain metal NPs. [40][41][42][43] In the presence of dG, these metal NPs become supported on this defective graphene. The metal content in the samples was determined by ICP analysis after dissolving the metal with aqua regia.…”