Study of Kazakhstan’s Shungite as Electrocatalyst Substrate in Hydrogen Evolution Reaction in Acidic Media

Аzhar Atchabarova, Dinara Abduakhytova, Khaisa Avchukir, Graziella Liana Turdean, Saken Abdimomyn, Rustam Tokpayev, Tamina Khavaza, Mikhail Nauryzbayev

2024

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DOI 10.24193/subbchem.2024.3.02

Data confidence 70 medium

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Abstract

The most efficient method to produce hydrogen is by electrolysis of water, and scientist’s current research is focused on developing inexpensive catalysts for this process. The article aims to study a carbon material (CM) obtained from shungite raw materials as electrocatalyst support in hydrogen evolution reaction (HER). The obtained activated CM has a multi-layered lamellar morphology with a specific surface area 356.40 m2/g. Electrocatalytical properties of the activated carbon material are the following: overpotential (η) at 10 mА/cm2 of 0.515 V vs. RHE with a Tafel slope of 172.5 mV/dec and good stability in acidic media. The obtained results show that activated CM from shungite raw material can be used as an electrocatalyst for obtaining hydrogen.