Journal of Electroanalytical Chemistry and Interfacial Electrochemistry, volume 251, issue 2, pages 275-295

Localization of platinum in low catalyst loading electrodes to to attain high power densities in SPE fuel cells

Edson A. Ticianelli
Edson A. Ticianelli 1
Charles R Derouin 1
Supramaniam Srinivasan 1
Publication typeJournal Article
Publication date1988-09-01
Quartile SCImago
Quartile WOS
Impact factor
ISSN00220728
General Chemistry
General Medicine
Abstract
This paper presents the results of three methods used to attain high power densities in solid polymer electrolyte fuel cell systems. The objectives of these methods are to use relatively thin electrocatalytic layers in the gas diffusion electrodes and to localize further the platinum near the front surface of the electrodes to minimize activation, ohmic, and mass transport overpotentials. The three methods were: (i) use of a higher wt% Pt/C in the supported electrocatalysts (20 and 40 wt% Pt/C rather than 10); (ii) sputtering of a thin film of platinum (corresponding to a 50 nm film on a smooth surface) on the state-of-the-art Prototech electrode (10 wt% Pt/C); and (iii) a combination of the two methods, i.e., sputtering of a 50 nm film of platinum on an electrode prepared with a higher Pt/C wt ratio in the supported electrocatalyst. The optimum configuration of the electrode was found to be the one fabricated with 20 wt% Pt/C in the supported electrocatalysts onto which was sputtered a 50 nm film of platinum. At a current density of 1 A/cm2, the cell potentials were 0.600 V and 0.540 V, with H2/O2 and H2/air as reactants, at 80° C, and 3/5 atm pressure. The cyclic voltammetric technique was used to ascertain the electrochemically active surface areas of the electrodes. By use of this method, the platinum utilization of the electrode with the optimum configuration was estimated to be about 15–20%. To increase the power densities further, it is necessary to use membranes with higher specific conductivities and better water retention characteristics.

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Ticianelli E. A. et al. Localization of platinum in low catalyst loading electrodes to to attain high power densities in SPE fuel cells // Journal of Electroanalytical Chemistry and Interfacial Electrochemistry. 1988. Vol. 251. No. 2. pp. 275-295.
GOST all authors (up to 50) Copy
Ticianelli E. A., Ticianelli E. A., Derouin C. R., Srinivasan S. Localization of platinum in low catalyst loading electrodes to to attain high power densities in SPE fuel cells // Journal of Electroanalytical Chemistry and Interfacial Electrochemistry. 1988. Vol. 251. No. 2. pp. 275-295.
RIS |
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RIS Copy
TY - JOUR
DO - 10.1016/0022-0728(88)85190-8
UR - https://doi.org/10.1016/0022-0728(88)85190-8
TI - Localization of platinum in low catalyst loading electrodes to to attain high power densities in SPE fuel cells
T2 - Journal of Electroanalytical Chemistry and Interfacial Electrochemistry
AU - Ticianelli, Edson A.
AU - Derouin, Charles R
AU - Srinivasan, Supramaniam
AU - Ticianelli, Edson A.
PY - 1988
DA - 1988/09/01 00:00:00
PB - Elsevier
SP - 275-295
IS - 2
VL - 251
SN - 0022-0728
ER -
BibTex |
Cite this
BibTex Copy
@article{1988_Ticianelli,
author = {Edson A. Ticianelli and Charles R Derouin and Supramaniam Srinivasan and Edson A. Ticianelli},
title = {Localization of platinum in low catalyst loading electrodes to to attain high power densities in SPE fuel cells},
journal = {Journal of Electroanalytical Chemistry and Interfacial Electrochemistry},
year = {1988},
volume = {251},
publisher = {Elsevier},
month = {sep},
url = {https://doi.org/10.1016/0022-0728(88)85190-8},
number = {2},
pages = {275--295},
doi = {10.1016/0022-0728(88)85190-8}
}
MLA
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MLA Copy
Ticianelli, Edson A., et al. “Localization of platinum in low catalyst loading electrodes to to attain high power densities in SPE fuel cells.” Journal of Electroanalytical Chemistry and Interfacial Electrochemistry, vol. 251, no. 2, Sep. 1988, pp. 275-295. https://doi.org/10.1016/0022-0728(88)85190-8.
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