Hydrogen storage performance of the multi-principal-component CoFeMnTiVZr alloy in electrochemical and gas-solid reactions.
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Authors
Berdonosova, Elena
Sarac, A Sezai
Korol, Artem
Semenov, Dmitri
Zadorozhnyy, Mikhail
Sharma, Adit
Greer, Alan L
Eckert, Jürgen
Publication Date
2020-06-29Journal Title
RSC advances
ISSN
2046-2069
Volume
10
Issue
41
Pages
24613-24623
Language
eng
Type
Article
This Version
VoR
Metadata
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Sarac, B., Zadorozhnyy, V., Berdonosova, E., Ivanov, Y. P., Klyamkin, S., Gumrukcu, S., Sarac, A. S., et al. (2020). Hydrogen storage performance of the multi-principal-component CoFeMnTiVZr alloy in electrochemical and gas-solid reactions.. RSC advances, 10 (41), 24613-24623. https://doi.org/10.1039/d0ra04089d
Description
Funder: Ministry of Science and Higher Education of the Russian Federation
Abstract
The single-phase multi-principal-component CoFeMnTiVZr alloy was obtained by rapid solidification and examined by a combination of electrochemical methods and gas-solid reactions. X-ray diffraction and high-resolution transmission electron microscopy analyses reveal a hexagonal Laves-phase structure (type C14). Cyclic voltammetry and electrochemical impedance spectroscopy investigations in the hydrogen absorption/desorption region give insight into the absorption/desorption kinetics and the change in the desorption charge in terms of the applied potential. The thickness of the hydrogen absorption layer obtained by the electrochemical reaction is estimated by high-resolution transmission electron microscopy. The electrochemical hydrogen storage capacity for a given applied voltage is calculated from a series of chronoamperometry and cyclic voltammetry measurements. The selected alloy exhibits good stability for reversible hydrogen absorption and demonstrates a maximum hydrogen capacity of ∼1.9 wt% at room temperature. The amount of hydrogen absorbed in the gas-solid reaction reaches 1.7 wt% at 298 K and 5 MPa, evidencing a good correlation with the electrochemical results.
Sponsorship
Austrian Science Fund FWF (I3937-N36)
European Research Council (ERC-2015-ADG-695487, 695487)
Russian Science Foundation (19-13-00207)
Identifiers
35516196, PMC9055208
External DOI: https://doi.org/10.1039/d0ra04089d
This record's URL: https://www.repository.cam.ac.uk/handle/1810/337852
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