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Multifunctional ammonium fuel cell using compost as a novel electro-catalyst
Dongguk Univ Seoul, Nano Informat Technol Acad, Seoul 100715, South Korea.ORCID iD: 0000-0002-1658-5555
Dongguk Univ Seoul, Nano Informat Technol Acad, Seoul 100715, South Korea.
Dongguk Univ Seoul, Nano Informat Technol Acad, Seoul 100715, South Korea.
Dongguk Univ Seoul, Nano Informat Technol Acad, Seoul 100715, South Korea.
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2018 (English)In: Journal of Power Sources, ISSN 0378-7753, E-ISSN 1873-2755, Vol. 402, p. 221-228Article in journal (Refereed) Published
Abstract [en]

Due to acute ammonium toxicity, it is always desirable to find a cheaper and abundant electro-catalyst other than platinum, iridium oxide, boron diamond etc with a high selectivity and negligible de-activation for its oxidation. Also ammonium is not known for electricity generation except biological nitrification process. So this paper elucidates the studies of compost as a novel electro-catalyst in a ammonium fuel cell configuration. These studies are done by varying type of electrodes & compost as well as ammonium concentration. Bi-polar cyclic voltammetry, electrochemical impedance spectroscopy, temperature dependence, cyclic stability and chronoamperometry techniques are used to study compost. Cow dung based compost is found to show the best electro-catalytic activity. IV measurements are conducted to study power generation in tune with the electro-catalytic activity. Finally, polarization and sustainability measurements are done on a comparatively larger fuel cell to check the size scalability. The results shows that the maximum power density is 108 mW/m(2) and this multifunctional device can be fueled after every 12 h for continuous operation and with negligible de-activation of electro-catalyst. These studies opens a window for doing further advanced research in compost triggered electro-catalysis to make multifunctional fuel cell devices for solving environmental and energy issues together.

Place, publisher, year, edition, pages
2018. Vol. 402, p. 221-228
Keywords [en]
Multifunctional, Ammonium, Fuel cell, Compost, Electro-catalyst, Energy
National Category
Other Environmental Engineering
Identifiers
URN: urn:nbn:se:uu:diva-370018DOI: 10.1016/j.jpowsour.2018.09.041ISI: 000449447800027OAI: oai:DiVA.org:uu-370018DiVA, id: diva2:1272396
Available from: 2018-12-19 Created: 2018-12-19 Last updated: 2018-12-19Bibliographically approved

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Ahuja, Rajeev

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