2D Platinum Network ORR Catalyst on Carbon and Niobium Oxide Hybrid Support

Abstract

A two dimensional (2D) platinum network catalyst on graphitic carbon and amorphous NbO x hybrid support has been synthesized by the Arc Plasma Deposition (APD) method. The 2D platinum structure on the conductive, corrosion resistant amorphous metal oxide significantly increases the catalyst stability under RDE accelerated stress tests. RDE and 5cm 2 MEA single cell test results show that the catalyst has higher specific and mass activities than those of conventionally prepared platinum on graphitic carbon (Pt/GC) catalyst. The microstructures of the catalyst were characterized by scanning tunneling microscopy (STM).

Dense Niobium Oxide Coating on Carbon Black as a Support to Platinum Electrocatalyst for Oxygen Reduction

“…[5] This reduced NbOx is required for the electronic conductivity. [20] To validate the XPS analysis, the C 1s BE of CÀ C was collected as a reference (Figure 3d) that was found at 284.8 eV. [21] Figure 4 shows electrochemical tests of the catalysts in a 3electrode cell.…”

Synthesis of platinum-based nanostructures and metal-organic framework-derived carbon for electrocatalytic applications

“…In recent times, 2D nanostructure systems have been recognized as promising and talented long-term lasting electrocatalysts for fuel cells. [55,56] 2D Pt nanosheets prepared through an in situ chemical-vapor reaction in molten salt by Yang and co-workers were highly active for ORR since they were carbon-free and surfactant.…”