H2S/O2 fuel cells using hydrogen sulfide from Black Sea waters View Full Text


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Article Info

DATE

2016-07-19

AUTHORS

Dzhamal Uzun, Elena Razkazova–Velkova, Konstantin Petrov, Venko Beschkov

ABSTRACT

The aim of the present research is the development of an economically feasible electrochemical method for the extraction of H2S contained in Black Sea waters (CH2S ~9 mg.l−1) and using it as a fuel in an H2S/O2 (air) fuel cell. Low HS− concentrations and the presence of NaCl, similar to the conditions found in the depths of the Black Sea have been investigated. The electrochemical conditions for the oxidation of sulfide HS− directly to sulfite and sulfate on the electrode (anode) catalysts have been found. Different anode catalysts for HS− oxidation have been tested: graphite, cobalt phthalocyanine and perovskite (La1,3Sr0.7NiO4). No catalytic poisoning has been observed by the oxidation products (sulfite and/or sulfate). The characteristics of the sulfide driven fuel cell have been tested with optimized HS− anodes and previously developed oxygen (air) cathodes. An electric power of P = 7.5 mW has been obtained.Graphical Abstract More... »

PAGES

943-949

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s10800-016-0979-4

DOI

http://dx.doi.org/10.1007/s10800-016-0979-4

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1021321486


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