M. A. Eryomina, N. V. Lyalina, S. F. Lomayeva, I. K. Averkiev
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Electrocatalytic Activity of a Composite Based on η-Niobium Carbide in Hydrogen Evolution Reaction
The electrocatalytic activity of a new composite material based on η-carbide Nb3(Fe, Al)3C in the hydrogen evolution reaction from acidic and alkaline solutions is studied. The composite was obtained by spark plasma sintering of mechanically alloyed niobium, aluminum, and graphite powders in steel containers in petroleum ether, followed by etching in an alkaline solution or in a hydrofluoric acid solution. The composite consists of 78 wt % Nb3(Fe, Al)3C, 19 wt % Nb5Al3Cx, and 3 wt % graphite; it has a layered structure with a layer thickness of the Nb5Al3Cx phase of 50–70 nm. In terms of the magnitudes of overpotential in the hydrogen evolution reaction, the resulting composite is superior to undoped Nb2CTx and Nb4C3Tx.
期刊介绍：
Inorganic Materials: Applied Research contains translations of research articles devoted to applied aspects of inorganic materials. Best articles are selected from four Russian periodicals: Materialovedenie, Perspektivnye Materialy, Fizika i Khimiya Obrabotki Materialov, and Voprosy Materialovedeniya and translated into English. The journal reports recent achievements in materials science: physical and chemical bases of materials science; effects of synergism in composite materials; computer simulations; creation of new materials (including carbon-based materials and ceramics, semiconductors, superconductors, composite materials, polymers, materials for nuclear engineering, materials for aircraft and space engineering, materials for quantum electronics, materials for electronics and optoelectronics, materials for nuclear and thermonuclear power engineering, radiation-hardened materials, materials for use in medicine, etc.); analytical techniques; structure–property relationships; nanostructures and nanotechnologies; advanced technologies; use of hydrogen in structural materials; and economic and environmental issues. The journal also considers engineering issues of materials processing with plasma, high-gradient crystallization, laser technology, and ultrasonic technology. Currently the journal does not accept direct submissions, but submissions to one of the source journals is possible.
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