EFFECT OF HEAT TREATMENT ON THE STRUCTURE AND FUNCTIONAL CHARACTERISTICS OF A PtCo/C CATALYST

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The PtCo/C electrocatalyst obtained by the method of simultaneous reduction of metal precursors using sodium borohydride was treated at a temperature of 350 ˚C in an argon atmosphere for 1 hour. The results of X-ray phase analysis and transmission electron microscopy indicate an increase in the average size of crystallites and the formation of nanoparticle agglomerates after heat treatment. The shift in the reflection of Pt (111) after treatment indicates the possible segregation of metal components during the heating of the sample. An increase in the catalyst activity after heat treatment is shown, both mass activity and specific activity. The stability of the sample after heat treatment, according to the results of the stress test in the potential range of 0.6–1.4 V, showed a higher value than the material in the “as prepared” state.

作者简介

A. Nevelskaya

South Federal University; Federal State Budgetary Institution of Science “Federal Research Centre The Southern Scientific Centre of the Russian Academy of Sciences” (SSC RAS)

Email: alina_nevelskaya@mail.ru
Rostov-on-Don, Russia; Rostov-on-Don, Russia

S. Belenov

South Federal University

Email: serg1986chem@mail.ru
Rostov-on-Don, Russia

N. Toporkov

South Federal University

Email: serg1986chem@mail.ru
Rostov-on-Don, Russia

A. Nikulin

South Federal University; Federal State Budgetary Institution of Science “Federal Research Centre The Southern Scientific Centre of the Russian Academy of Sciences” (SSC RAS)

编辑信件的主要联系方式.
Email: serg1986chem@mail.ru
Rostov-on-Don, Russia; Rostov-on-Don, Russia

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版权所有 © А.К. Невельская, С.В. Беленов, Н.В. Топорков, А.Ю. Никулин, 2023

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