Highly active carbon supported Pd cathode catalysts for direct formic acid fuel cells

A. Mikolajczuk-Zychora , A. Borodziński , P. Kędzierzawski , B. Mierzwa , Marta Mazurkiewicz-Pawlicka , Leszek Stobiński , Ewelina Ciecierska , A. Zimoch , M. Opałło

Abstract

One of the drawbacks of low-temperature fuel cells is high price of platinum-based catalysts used for the electroreduction of oxygen at the cathode of the fuel cell. The aim of this work is to develop the palladium catalyst that will replace commonly used platinum cathode catalysts. A series of palladium catalysts for oxygen reduction reaction (ORR) were prepared and tested on the cathode of Direct Formic Acid Fuel Cell (DFAFC). Palladium nanoparticles were deposited on the carbon black (Vulcan) and on multiwall carbon nanotubes (MWCNTs) surface by reduction of palladium(II) acetate dissolved in ethanol. Hydrazine was used as a reducing agent. The effect of functionalization of the carbon supports on the catalysts physicochemical properties and the ORR catalytic activity on the cathode of DFAFC was studied. The supports were functionalized by treatment in nitric acid for 4 h at 80 °C. The structure of the prepared catalysts has been characterized by thermogravimetric analysis (TGA), X-ray diffraction (XRD), transmission electron microscope (TEM) and cyclic voltammetry (CV). Hydrophilicity of the catalytic layers was determined by measuring contact angles of water droplets. The performance of the prepared catalysts has been compared with that of the commercial 20 wt.% Pt/C (Premetek) catalyst. The maximum power density obtained for the best palladium catalyst, deposited on the surface of functionalized carbon black, is the same as that for the commercial Pt/C (Premetek). Palladium is cheaper than platinum, therefore the developed cathode catalyst is promising for future applications.
Author A. Mikolajczuk-Zychora
A. Mikolajczuk-Zychora,,
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, A. Borodziński
A. Borodziński,,
-
, P. Kędzierzawski
P. Kędzierzawski,,
-
, B. Mierzwa
B. Mierzwa,,
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, Marta Mazurkiewicz-Pawlicka LG PW - The Faculty of Materials Science and Engineering, WUT (WIM)
Marta Mazurkiewicz-Pawlicka,,
- WUT Grafen Laboratory
, Leszek Stobiński LG PW - [Institute of Physical Chemistry Polish Academy of Sciences (IChF PAN)]
Leszek Stobiński,,
- WUT Grafen Laboratory
- Instytut Chemii Fizycznej Polskiej Akademii Nauk
, Ewelina Ciecierska ZPM
Ewelina Ciecierska,,
- Division of Materials Design
, A. Zimoch
A. Zimoch,,
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, M. Opałło
M. Opałło,,
-
Journal seriesApplied Surface Science, ISSN 0169-4332
Issue year2016
Vol388
NoB
Pages645-652
Publication size in sheets0.5
Conference12th International Symposium on Electrochemical/ Chemical Reactivity of New Materials - „Surface Science - key to understand advanced materials” (ECRNM 12), 15-09-2015 - 18-09-2015, Warszawa, Polska
Keywords in Englishcathode, palladium, direct formic acid fuel cells, electro-reduction of oxygen
DOIDOI:10.1016/j.apsusc.2016.02.065
URL http://ac.els-cdn.com/S0169433216302343/1-s2.0-S0169433216302343-main.pdf?_tid=18d65800-c056-11e6-b10e-00000aab0f26&acdnat=1481538850_cae5e472d407a594fc61b0fe9a9f7542
Languageen angielski
File
Mikolajczuk-Zychora A. (i in.) - Highly active carbon....pdf (file archived - login or check accessibility on faculty) Mikolajczuk-Zychora A. (i in.) - Highly active carbon....pdf 1.87 MB
Score (nominal)35
ScoreMinisterial score = 35.0, 28-11-2017, ArticleFromJournalAndMatConf
Ministerial score (2013-2016) = 35.0, 28-11-2017, ArticleFromJournalAndMatConf
Publication indicators WoS Impact Factor: 2016 = 3.387 (2) - 2016=3.184 (5)
Citation count*0 (2016-08-26)
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* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.
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