Pt/Fe/NiO on CNT/CP substrate as a possible electrode of nano chip devices

Litkohi, Hajar Rajaei; Bahari, Ali; Ojani, Reza

doi:10.1007/s10854-017-6424-6

Cited by 7 publications

(1 citation statement)

References 27 publications

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“…are widely used as a cathode catalyst support for Pt nanoparticles for PEMFCs due to their high chemical, electrochemical and thermal stability, high surface area, good electrical conductivity, and corrosion-resistant property. [14][15][16][17][18][19][20][21][22][23][24][25] However, their hydrophobic nature prohibits better dispersion of Pt nanoparticles on CNT supports. [26,27] So, to circumvent this problem and to have a proper dispersion for better metal support interaction and stability, the functionalization of CNTs is essential.…”

Section: Introductionmentioning

confidence: 99%

Improving Pt Utilization and Electrochemical Activity of Proton Exchange Membrane Fuel Cells Through Surface Modification of Carbon Nanotube Catalyst Support

Ganguly,

Ramanujam,

Ramaprabhu

2024

Energy Tech

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The main hindrances in commercializing hydrogen fuel cells are the high catalyst cost, sluggish oxygen reduction reaction (ORR) kinetics, and low durability over long cycling. Herein, a low‐Pt‐based efficient cathode catalyst decorated on nitrogen‐doped carbon nanotube (CNT) support is developed. The effect of N doping and chemical etching of CNTs on the performance of proton exchange membrane fuel cells (PEMFC) are demonstrated in this work. Half‐cell studies showed that Pt decorated N‐doped etched carbon nanotubes (Pt/NECNT) exhibit higher electrochemical surface area, onset potential, specific activity, and mass activity than Pt/CNT, Pt/ECNT, Pt/NCNT, and commercial Pt/C samples. In contrast to the commercial Pt/C catalyst, minimal loss in limiting current density and half‐wave potential is observed for Pt/NECNT catalyst even after the 10000th ADT cycle. From single‐cell study, the peak power density of 950 mW cm−2 and operational power density of 840 mW cm−2 (at 0.6 V) are obtained using Pt/NECNT cathode catalyst at 80 °C with low Pt loading. The remarkable enhancement in the electrocatalytic activity, kinetic property, and high durability of Pt/NECNT are ascribed to the N doping and surface modification of CNT support.

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