Bipolar Electrochemistry as a Simple Synthetic Route toward Nanoscale Transition of Mo2B5 and W2B5 for Enhanced Hydrogen Evolution Reaction
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F19%3A43918027" target="_blank" >RIV/60461373:22310/19:43918027 - isvavai.cz</a>
Alternative codes found
RIV/00216305:26620/19:PU133213
Result on the web
<a href="https://pubs.acs.org/doi/10.1021/acssuschemeng.9b01251" target="_blank" >https://pubs.acs.org/doi/10.1021/acssuschemeng.9b01251</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/acssuschemeng.9b01251" target="_blank" >10.1021/acssuschemeng.9b01251</a>
Alternative languages
Result language
angličtina
Original language name
Bipolar Electrochemistry as a Simple Synthetic Route toward Nanoscale Transition of Mo2B5 and W2B5 for Enhanced Hydrogen Evolution Reaction
Original language description
The development of non-noble metal and earth-abundant-based electrocatalysts for electrochemical hydrogen production is of great significance for large scale application of water splitting technology. Particularly, molybdenum- and tungsten-based materials, such as MoS2, WS2, MoP, and WP, are widely studied for their promising performance in catalyzing the hydrogen evolution reaction (HER), especially in their nanostructured forms. Here, we investigate the HER activity of nanostructured molybdenum and tungsten borides, which are highly understudied, and report the use of bipolar electrochemistry (BP) to enhance their performances. BP treatment induces the size reduction of commercial Mo2B5 and W2B5 from the micrometer range down to the nanometer range. The smaller Mo2B5 and W2B5 particles have greater exposure of active sites for HER catalysis and result in better HER performance. To illustrate, we found that the electrocatalytic performance of BP-treated W2B5 is close to the best HER electrocatalyst, Pt/C. Electrochemical impedance spectroscopy measurements reveal lower charge transfer resistance (R-ct) of the materials after bipolar electrochemical treatment, thereby suggesting another effect of the BP method in enhancing HER catalysis. Overall, we demonstrate bipolar electrochemistry as a simple method to improve the catalytic activity of Mo2B5 and W2B5.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10402 - Inorganic and nuclear chemistry
Result continuities
Project
<a href="/en/project/GX19-26896X" target="_blank" >GX19-26896X: 2D Nanomaterials Electrochemistry</a><br>
Continuities
N - Vyzkumna aktivita podporovana z neverejnych zdroju
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
ACS Sustainable Chemistry & Engineering
ISSN
2168-0485
e-ISSN
—
Volume of the periodical
7
Issue of the periodical within the volume
14
Country of publishing house
US - UNITED STATES
Number of pages
12
Pages from-to
12148-12159
UT code for WoS article
000475838100025
EID of the result in the Scopus database
2-s2.0-85073659076