The commercialization of proton exchange membrane fuel cells (PEMFCs) could provide a cleaner energy society in the near future. However, sluggish reaction kinetics and harsh conditions oxygen reduction affect durability cost PEMFCs. Most previous reports on Pt-based electrocatalyst designs have focused more improving their activity; however, with PEMFCs, has received increasing attention. In-d...

Controlled synthesis of dual-atom catalysts (DACs) for heterogeneous catalytic reactions is vital but still demanding. Herein, we construct a novel catalyst containing FeN3-CoN3 sites on N-doped graphene nanosheets (CoFe-NG), which exhibits remarkable performance with half-wave potential 0.952 V oxygen reduction reaction (ORR) and shows higher endurance to methanol/carbon monoxide poisoning bet...

In situ lithiation-delithiation treatment enables high oxygen reduction activity in palladium selenide without serious structural or phase change; resulting an optimum balance of catalytic and stability.

In this study PtFeCo ternary alloys nanoparticles of three dimentional (3D) rhombus shapes dispersed on graphene nanosheets (PtFeCo/Gr) were successfully prepared and studied as electrocatalysts for oxygen reduction reaction (ORR) in polymer-electrolyte fuel cells. A combination of analytical techniques including powder X-ray diffraction, X-ray photoelectron spectra, inductively coupled plasma-...

Fuel cell is a promising choice for clean energy because of its eco-friendly system, high energy conversion efficiency and high power density. Recently, much of the research work is focused on the system of combining metal oxides to increase the durability and surface area and to reduce the cost. In this study, among the various fabrication methods, we used the precipitation method to synthesis...

Objectives • Synthesize novel non-precious-metal electrocatalysts, with activity and stability similar to Pt, for the oxygen reduction reaction. – High activity toward oxygen reduction reaction – Mass production method – Corrosion resistance – Low cost • Improve understanding of the reaction mechanism of oxygen reduction on non-precious catalysts through: – Theoretical molecular modeling – Elec...

Obtaining a detailed understanding of the surface modification supports is crucial; however, it challenging task for development and large-scale fabrication supported electrocatalysts that can be used as alternatives to Pt-based catalysts oxygen reduction reaction (ORR). In this study, commercial silicon carbide (SiC) was modified through oxidization (O-SiC) support use Pd nanoparticles (Pd NPs...

The cathodic material plays an essential role in oxygen reduction reaction for energy conversion and storage systems. Titanium dioxide, as a semiconductor material, is usually not recognized as an efficient oxygen reduction electrocatalyst owning to its low conductivity and poor reactivity. Here we demonstrate that nano-structured titanium dioxide, self-doped by oxygen vacancies and selectively...