(264i) MoS2-Pt Deposited on Nitrogen-Doped Carbon Nanotubes As Efficient Electrocatalyst for Hydrogen Evolution Reaction
AIChE Annual Meeting
2019
2019 AIChE Annual Meeting
Particle Technology Forum
Functional Nanoparticles
Tuesday, November 12, 2019 - 10:05am to 10:20am
In this research, MoS2 and MoS2-Pt nanoparticles were synthesized on nitrogen-doped carbon nanotubes (N-CNT) by a single-step surfactant assisted via. Scanning electron microscopy (SEM) was carried out to study the distribution, particle size and morphology of the nanocomposites. The kinetics and electrocatalytic activity of the nanocomposites were studied by cyclic voltammetry (CV), rotating disk electrode (EDR) and electrochemical impedance spectroscopy (EIS) towards the hydrogen reactions in acidic media with additions of HBr. SEM micrographs showed that MoS2 or MoS2-Pt were deposited at the surface of the N-CNT as spherical-particles with 20 nm diameter approximately. Element mapping by SEM confirmed the formation of MoS2active materials. A decrease in the overpotential for hydrogen evolution reaction was observed when using a one pot synthesis compared to mechanical blend. Finally, MoS2-Pt @ N-MWCNT exhibited high stability in the presence of HBr as compared with Pt/C electrodes for further use as hydrogen electrode in a H2-Br2 RFB.
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