Harnessing dimethyl ether and methyl formate fuels for direct electrochemical energy conversion
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23640%2F23%3A43968958" target="_blank" >RIV/49777513:23640/23:43968958 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S209549562300270X" target="_blank" >https://www.sciencedirect.com/science/article/pii/S209549562300270X</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jechem.2023.05.001" target="_blank" >10.1016/j.jechem.2023.05.001</a>
Alternative languages
Result language
angličtina
Original language name
Harnessing dimethyl ether and methyl formate fuels for direct electrochemical energy conversion
Original language description
In this work, the oxidation of a mixture of dimethyl ether (DME) and methyl formate (MF) was studied in both an aqueous electrochemical cell and a vapor-fed polymer electrolyte membrane fuel cell (PEMFC) utilizing a multi-metallic alloy catalyst, Pt3Pd3Sn2/C, discovered earlier by us. The current obtained during the bulk oxidation of a DME-saturated 1 M MF was higher than the summation of the currents provided by the two fuels separately, suggesting the cooperative effect of mixing these fuels. A significant increase in the anodic charge was realized during oxidative stripping of a pre-adsorbed DME+MF mixture as compared to DME or MF individually. This is ascribed to greater utilization of specific catalytic sites leading to lower energy of the dual-fuel than of the sum of the individual molecules as confirmed by the density functional theory (DFT) calculations. Fuel cell polarization was also conducted using a Pt3Pd3Sn2/C (anode) and Pt/C (cathode) catalysts-coated membrane (CCM). The enhanced surface coverage and active site utilization resulted in providing a higher peak power density by the DME+MF mixture-fed fuel cell (123 mW cm−2 at 0. 45 V) than with DME (84 mW cm−2 at 0.35 V) or MF (28 mW cm−2 at 0.2 V) at the same total anode hydrocarbon flow rate, temperature under ambient pressure.
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
10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Energy Chemistry
ISSN
2095-4956
e-ISSN
2095-4956
Volume of the periodical
83
Issue of the periodical within the volume
AUG 2023
Country of publishing house
CN - CHINA
Number of pages
11
Pages from-to
454-464
UT code for WoS article
001014802300001
EID of the result in the Scopus database
2-s2.0-85160772075