Efficient oxygen reduction activity on layered palladium phosphosulphide and its application in alkaline fuel cells

Abstract

A ternary layered PdPS is employed as a catalyst for ORR in alkaline medium. � The ORR is found to occur through a direct four electron pathway. � PdPS has been used as cathode catalyst in anion exchange membrane fuel cell. � A peak power density of 340 mWcm À 2 at 60 � C is observed for the AEMFC. � Performance in fuel cell is quite comparable to that of Pt/C under similar conditions.

Fabrication of polyoxometalate-modified palladium–nickel/reduced graphene oxide alloy catalysts for enhanced oxygen reduction reaction activity

“…Remarkably, the value of the Tafel slope for Pd 8 Ni 2 /rGO-POM showed excellent agreement with the typical values achieved for carbonsupported Pt catalyst in the literature. 62,63 The close Tafel slope values of Pd 8 Ni 2 /rGO-POM and Pt/C manifest that the oxygen reduction kinetics is nearly similar for the two nanocatalysts.…”

Nanotubular Geometry for Stabilizing Metastable 1T‐Phase Ru Dichalcogenides

“…Moreover, only a few studies on TMDs for application to alkaline fuel cells are available in the literature. [15,22] In this study, a membrane electrode assembly (MEA) was fabricated using of Ru(S 0.8 Se 0.2 ) 2−δ and PtRu/C as a cathode and an anode, respectively, to evaluate the electrochemical performance of the RNTs in a full cell. The mass loadings of both electrodes were 0.6 mg cm −2 .…”

“…[14] By extension, compared to previously reported TMD-based electrocatalysts, the 1T-phase-dominant RNT effectively catalyzed oxygen reduction reaction (ORR) in both half-and full-cell (E 1/2 = 0.864 eV and W max = 0.526 W cm −2 , respectively) configurations. [15,16] While many studies have been focused on zero-dimensional and 2D-nanostructured electrocatalysts, our demonstration could be a crucial cornerstone of the importance of 1D nanotube structures.…”

A three-dimensional ordered honeycomb nanostructure anchored with Pt–N active sites via self-assembly of a block copolymer: an efficient electrocatalyst towards the oxygen reduction reaction in fuel cells

“…[1][2][3][4] For years, Pt-based catalysts have been the common choice to boost the oxygen reduction reaction (ORR) in fuel cells. [5][6][7][8] The catalytic properties of Pt catalysts generally stem from the exterior atoms of the nanoparticles (NPs). 9 Consequently, the rationale for improving the performance of Pt catalysts is the high surface-area-to-volume ratio, 10 which not only increases the proportion of Pt atoms exposed on the NP surface but also accesses quantum effects with the improved catalytic activity.…”