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Article: Ag nanoparticle-modified MnO2 nanorods catalyst for use as an air electrode in zinc-air battery

TitleAg nanoparticle-modified MnO2 nanorods catalyst for use as an air electrode in zinc-air battery
Authors
KeywordsSilver-manganese oxide
Oxygen reduction
Bifunctional catalysts
Zinc-air battery
Oxygen evolution
Issue Date2013
Citation
Electrochimica Acta, 2013, v. 114, p. 598-604 How to Cite?
AbstractIn this paper, we report the synthesis, characterization and application of an inexpensive yet efficient bifunctional catalyst composed of Ag nanocrystals (∼11 nm) anchored on α-MnO2 nanorods. The nanostructured Ag-MnO2 catalysts exhibit improved oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) performance in aqueous alkaline media, in terms of onset potential, generated current density and Tafel slopes. Rotating disk electrode results show that near-four electrons per oxygen molecule were transferred during ORR of Ag-MnO2. A zinc-air battery prototype employing Ag-MnO2 in the air electrode was successfully operated for 270 cycles under light discharge-charge condition. Ag-MnO2 is an efficient bifunctional catalyst for electrochemical devices such as metal-air batteries and alkaline fuel cells. © 2013 Elsevier Ltd.
Persistent Identifierhttp://hdl.handle.net/10722/219726
ISSN
2015 Impact Factor: 4.803
2015 SCImago Journal Rankings: 1.391

 

DC FieldValueLanguage
dc.contributor.authorGoh, F. W Thomas-
dc.contributor.authorLiu, Zhaolin-
dc.contributor.authorGe, Xiaoming-
dc.contributor.authorZong, Yun-
dc.contributor.authorDu, Guojun-
dc.contributor.authorHor, T. S Andy-
dc.date.accessioned2015-09-23T02:57:49Z-
dc.date.available2015-09-23T02:57:49Z-
dc.date.issued2013-
dc.identifier.citationElectrochimica Acta, 2013, v. 114, p. 598-604-
dc.identifier.issn0013-4686-
dc.identifier.urihttp://hdl.handle.net/10722/219726-
dc.description.abstractIn this paper, we report the synthesis, characterization and application of an inexpensive yet efficient bifunctional catalyst composed of Ag nanocrystals (∼11 nm) anchored on α-MnO2 nanorods. The nanostructured Ag-MnO2 catalysts exhibit improved oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) performance in aqueous alkaline media, in terms of onset potential, generated current density and Tafel slopes. Rotating disk electrode results show that near-four electrons per oxygen molecule were transferred during ORR of Ag-MnO2. A zinc-air battery prototype employing Ag-MnO2 in the air electrode was successfully operated for 270 cycles under light discharge-charge condition. Ag-MnO2 is an efficient bifunctional catalyst for electrochemical devices such as metal-air batteries and alkaline fuel cells. © 2013 Elsevier Ltd.-
dc.languageeng-
dc.relation.ispartofElectrochimica Acta-
dc.subjectSilver-manganese oxide-
dc.subjectOxygen reduction-
dc.subjectBifunctional catalysts-
dc.subjectZinc-air battery-
dc.subjectOxygen evolution-
dc.titleAg nanoparticle-modified MnO2 nanorods catalyst for use as an air electrode in zinc-air battery-
dc.typeArticle-
dc.description.natureLink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.electacta.2013.10.116-
dc.identifier.scopuseid_2-s2.0-84887334425-
dc.identifier.volume114-
dc.identifier.spage598-
dc.identifier.epage604-

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