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dc.creatorŻółtowski, Piotr
dc.creatorDražić, Dragutin M.
dc.creatorVorkapić, L.Ž.
dc.date.accessioned2021-01-21T15:29:34Z
dc.date.available2021-01-21T15:29:34Z
dc.date.issued1973
dc.identifier.issn0021-891X
dc.identifier.issn1572-8838
dc.identifier.urihttps://cer.ihtm.bg.ac.rs/handle/123456789/4133
dc.description.abstractTo increase the overload capacity of the carbon-air electrode in alkaline electrolyte, without seriously changing the electrode potential during short-time overload periods, small amounts of MnO2 were added to carbon and the effects investigated. The potentiodynamic investigations revealed the existence of two reducible manganese species with reduction potentials of about −280 mV and −400 mV. The second potential corresponds to the known reduction process Mn(III) → Mn(II) whilst the first one corresponds to a reversible process (the product is easily reoxidized by air or anodically), not reported in literature as yet. It was explained in terms of a new redox potential for the system Mn(III)/Mn(II), both species being strongly and irreversibly adsorbed at the carbon surface. The galvanostatic discharge curves in the absence of air indicate that a sufficient overload capacity of about 40 C cm−2 is available if 22% (wt) MnO2 is added. Steady-state polarization curves in the presence of air indicate the catalytic effect of small amounts of MnO2 for the oxygen reduction reaction.sr
dc.language.isoensr
dc.publisherSpringer Naturesr
dc.rightsrestrictedAccesssr
dc.sourceJournal of Applied Electrochemistrysr
dc.subjectcarbon-air electrodesr
dc.subjectMnO2sr
dc.subjectSteady-state polarization curvessr
dc.subjectcatalytic effectsr
dc.titleCarbon-air electrode with regenerative short time overload capacity: Part 1. Effect of manganese dioxidesr
dc.typearticlesr
dc.rights.licenseARRsr
dcterms.abstractВоркапић, Л.Ж.; Дражић, Драгутин М.; Żółтоwски, Пиотр;
dc.citation.volume3
dc.citation.issue4
dc.citation.spage271
dc.citation.epage283
dc.identifier.doi10.1007/BF00613033
dc.identifier.scopus2-s2.0-0015683034
dc.type.versionpublishedVersionsr


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