Platinum–Nickel Electrocatalysts for a Proton-Exchange Membrane Fuel Cell Cathode: Their Synthesis, Acid Treatment, Microstructure and Electrochemical Behavior

Ekaterina Kozhokar, Angelina Pavlets, Ilya Pankov and Anastasia Alekseenko ()
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Ekaterina Kozhokar: Faculty of Chemistry, Southern Federal University, 7 Zorge St., Rostov-on-Don 344090, Russia
Angelina Pavlets: Faculty of Chemistry, Southern Federal University, 7 Zorge St., Rostov-on-Don 344090, Russia
Ilya Pankov: Research Institute of Physical Organic Chemistry, Southern Federal University, 194/2 Stachki St., Rostov-on-Don 344090, Russia
Anastasia Alekseenko: Faculty of Chemistry, Southern Federal University, 7 Zorge St., Rostov-on-Don 344090, Russia

Energies, 2023, vol. 16, issue 16, 1-15

Abstract: Within this research, we studied the structural–morphological and electrochemical characteristics of the PtNi/C catalysts synthesized via the two-stage sequential reduction of precursors. We also carried out a comparative study of the obtained bimetallic catalysts and their commercial Pt/C analog. The use of triethylamine as a surfactant as well as the acid treatment as an additional synthesis stage, were shown to have a positive effect on the functional parameters of the bimetallic electrocatalysts. The resulting PtNi/C electrocatalyst demonstrates a mass activity value of 389 A g Pt −1 , which is 1.6 times higher than this parameter for a commercial analog.

Keywords: platinum-nickel electrocatalyst; bimetallic electrocatalyst; ORR activity; de-alloyed catalyst; nanoparticle structure (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
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