Improvement of the Performance of a Direct Methanol Fuel Cell Using a Pulse Technique Full article
Journal |
Journal of the Electrochemical Society
ISSN: 0013-4651 |
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Output data | Year: 2006, Volume: 153, Number: 6, Pages: A997-A1003 Pages count : 7 DOI: 10.1149/1.2188330 | ||||
Tags | Anodes; Cathodes; Current density; Electrochemistry; Mass spectrometry; Methanol; Oxidation | ||||
Authors |
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Affiliations |
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Funding (1)
1 | German Research Foundation | Sti74/8-4 |
Abstract:
A pulse method is suggested for the improvement of the performance of a direct methanol fuel cell operated with PtRu anode and Pt cathode. The pulse method can be realized either in a potentiostatic or in a galvanostatic mode. In the galvanostatic regime of low current densities it allows for a temporary hoist of the cell voltage by up to 150mV . It is suggested that by periodically applying a pulse to the fuel cell, the anode potential is shifted to positive values at which the otherwise high COads coverage on the PtRu anode is decreased by oxidation. After the pulse, the methanol oxidation rate is enhanced until the previous COads coverage is re-established and a new pulse is then applied. Differential electrochemical mass spectroscopy data reveal that an appreciable voltage gain can be obtained at a reduction of only ca. 10–15% of the COads saturation coverage.
Cite:
Neergat M.
, Seiler T.
, Savinova E.R.
, Stimming U.
Improvement of the Performance of a Direct Methanol Fuel Cell Using a Pulse Technique
Journal of the Electrochemical Society. 2006. V.153. N6. P.A997-A1003. DOI: 10.1149/1.2188330 WOS Scopus РИНЦ
Improvement of the Performance of a Direct Methanol Fuel Cell Using a Pulse Technique
Journal of the Electrochemical Society. 2006. V.153. N6. P.A997-A1003. DOI: 10.1149/1.2188330 WOS Scopus РИНЦ
Dates:
Submitted: | Jun 30, 2005 |
Accepted: | Jan 27, 2006 |
Published online: | Apr 10, 2006 |
Identifiers:
Web of science | WOS:000237229300008 |
Scopus | 2-s2.0-33646420354 |
Elibrary | 13525019 |
Chemical Abstracts | 2006:609578 |
Chemical Abstracts (print) | 145:233017 |
OpenAlex | W2000012908 |