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

Abstract

Improving the activity and durability of Pt-based electrocatalysts used in the acidic oxygen reduction reaction (ORR) is a great task for the commercial applications of proton-exchange membrane fuel cells. Alloying...

CoZn/N-Doped porous carbon derived from bimetallic zeolite imidazolate framework/g-C3N4 for efficient hydrodeoxygenation of vanillin

“…9,[22][23][24] The nitrogen-doped carbon materials can be prepared by pyrolysis of bio-resources 16,18,25 or MOFs, 17 and exhibited good supporting performance in the HDO of vanillin. [16][17][18] Very recently, nitrogen-doped carbon materials have received considerable attention as fascinating materials for the immobilization of metal nanoparticles even [26][27][28] single atoms. 29 They showed excellent performances in the oxygen reduction reaction (ORR).…”

“…29 They showed excellent performances in the oxygen reduction reaction (ORR). [26][27][28]30 However, the simple and controllable fabrication of nitrogen-doped carbon materials with appropriate textural, chemical, electrical and functional properties is still a challenge.…”

Ordered PtCoFe Ternary Alloy Electrocatalyst Derived from Pre-Synthesized CoFe Hydroxide for Oxygen Reduction Reaction

“…The electrochemically surface area (ECSA) of the Pt 3 Co 2 Fe/C catalyst was determined by the total charge of hydrogen desorption in the CV curve, which was calculated as follows. ECSA = Q normalH 0.21 0.25em mC 0.25em cm − 2 × L Pt Q H (mC) represents the charge for hydrogen desorption in the cyclic voltammogram, 210 μC cm –2 represents the charge for hydrogen adsorption of the Pt nanocrystal surface, and L Pt (mg Pt cm –2 ) represents the Pt loading on the working electrode …”

“…Q H (mC) represents the charge for hydrogen desorption in the cyclic voltammogram, 210 μC cm −2 represents the charge for hydrogen adsorption of the Pt nanocrystal surface, and L Pt (mg Pt cm −2 ) represents the Pt loading on the working electrode. 60 The linear sweep voltammetry (LSV) measurements were carried out from 0.05 to 1.05 V vs RHE in O 2 -saturated 0.1 M HClO 4 at a rotation rate of 1600 rpm and sweep rate of 10 mV s −1 . Accelerated durability tests (ADT) were performed between 0.6 and 1.0 V vs RHE in O 2 -saturated 0.1 M HClO 4 at a scan rate of 100 mV s −1 .…”

Zeolite imidazolate framework/g-C3N4 derived Co nanoparticles embedded in nitrogen doped carbon for efficient hydrogenation of phenol

“…However, there are normally some limitations such as the chemically inert surface and the shortage of functional groups for the traditional carbon materials. 25 Heteroatom-doped carbon materials, especially nitrogen-doped ones, have received increasing attention for the loading of metal nanoparticles even [26][27][28] single atoms. 29,30 The chemical, electrical, and functional properties of the material can be enhanced by nitrogen atoms incorporated in the matrix of carbon.…”