Adding refractory 5d transition metal W into PtCo system: an advanced ternary alloy for efficient oxygen reduction reaction

Abstract

Schematic diagram of the Pt–Co–W catalyst with remarkably enhanced ORR activity compared to Pt/C catalysts.

Low Pt Alloyed Nanostructures for Fuel Cells Catalysts

“…As discussed above, reinforcing the vertices [110] and the edges [107] is a good direction for further strengthening structural robustness, while extra structure atop the frame edges [109] can provides extra active surface. Other ideas include modifying substrates with more robust structures [114][115][116][117], and introducing 4d or 5d transition metal that strengths the ligand effect as well as its electrochemical durability [10,118]. At last, in light of Pt alloyed nanostructures' broadened application in magnetic or optical use [119], recycling used Pt alloyed nanocatalysts can be regarded as a way to reduce the costs of noble metals.…”

High‐Efficiency Electrosynthesis of Hydrogen Peroxide from Oxygen Reduction Enabled by a Tungsten Single Atom Catalyst with Unique Terdentate N1O2 Coordination

“…Tungsten (W), as a 5d transition metal element in six group of the periodic table, is characteristic of complex chemical states with variable oxidation states and coordination number. [30,31] Very recently, some W-based SACs have been used for various electrocatalytic applications, such as hydrogen evolution reaction (HER), [32] nitrogen reduction reaction (NRR), [33] 4e -ORR [30] and Li-S batteries. [34] However, to the best of our knowledge, the preparation and investigation of W-based SACs for H 2 O 2 electrosynthesis have not been reported so far.…”

Design of ternary Pt–CoZn alloy catalysts coated with N-doped carbon towards acidic oxygen reduction

“…[13][14] Among such alloys, Pt-Co exhibits outstanding ORR activity, [15][16][17][18] but it still suffers from transition metal leaching from alloys during electrocatalytic processes. [19][20] Therefore, methods to improve the performance of Pt-Co catalysts is of great practical importance.…”

“…To improve the overall electrocatalytic performance, an attractive method is to construct Pt-Co-based ternary alloy systems with a multi-metallic synergistic effect, such as PtCoW, 20 PtCoNi, 21 PtFeCo/NPG, 22 PtCoMn, 23 etc. The introduction of a third metal provides flexibility for manipulating the electronic and/or surface structure, which can greatly alter the availability of surface active sites and remarkably enhance the ORR performance.…”