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Article

Open Access

Ni-Co Alloy as Catalyst for Fuel Electrode of Hydrazine Fuel Cell

Author(s)

Paweł Piotr Włodarczyk, Barbara Włodarczyk

Full-Text PDF Download XML 6662 Views

DOI:10.17265/1537-1514/2015.05.005

Affiliation(s)

Paweł Piotr Włodarczyk, Ph.D., Faculty of Natural Sciences and Technology, Department of Process Engineering, Opole University, Opole, Poland.
Barbara Włodarczyk, Ph.D., Faculty of Natural Sciences and Technology, Department of Process Engineering, Opole University, Opole, Poland.

ABSTRACT

Recent times have shown significant development of non-conventional and renewable sources of energy. Much attention has been paid to increase the use of fuel cells (FCs). However, the use of FCs on a large scale is mainly limited by the high cost of catalysts. Due to its excellent catalytic properties, platinum is most commonly used as the catalyst. However, due to the high price of platinum, other high efficiency catalysts should be researched. Elimination of platinum as catalyst would allow for wider commercial application of FCs. This will contribute to the development of high efficiency green energy sources. The paper presents a study of hydrazine electro-oxidation on electrode with Ni-Co alloy catalyst. The work shows a possibility of use of Ni-Co alloys as catalysts for electro-oxidation of hydrazine. Researches were done by the method of polarizing curves of electro-oxidation of hydrazine in glass vessel, on a copper electrode with Ni-Co alloy as a catalyst. An aqueous solution of KOH was used as the electrolyte. Measurements were done with the use of potentiostat. Conducted measurements show that there is a possibility of electro-oxidation of hydrazine on Ni-Co electrode. In any case, the process of electro-oxidation of hydrazine occurs. A current density of about 40-60 mA/cm2 has been obtained for all concentrations of hydrazine and electrolyte. The current density is low, but the price of the catalyst is much lower than platinum. At 75% of Co, there is a sudden fall of current density. So, the work shows possibility to use Ni-Co alloys as catalysts for fuel electrode of hydrazine FCs.

KEYWORDS

fuel cell (FC), catalyst, electro-oxidation, Ni-Co alloy, hydrazine

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