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Electrochemical Synthesis of NH3 at Low Temperature and Atmospheric Pressure Using a γ-Fe2O3 Catalyst

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dc.contributor.authorJimin Kong-
dc.contributor.authorAhyoun Lim-
dc.contributor.authorChangwon Yoon-
dc.contributor.authorJong Hyun Jang-
dc.contributor.authorHyung Chul Ham-
dc.contributor.authorJonghee Han-
dc.contributor.authorSukwoo Nam-
dc.contributor.authorDokyoon Kim-
dc.contributor.authorYung-Eun Sung-
dc.contributor.authorJungkyu Choi-
dc.contributor.authorHyun S. Park-
dc.date.available2018-01-08T05:16:40Z-
dc.date.created2017-12-12-
dc.date.issued2017-11-
dc.identifier.issn2168-0485-
dc.identifier.urihttps://pr.ibs.re.kr/handle/8788114/4167-
dc.description.abstractThe electrochemical synthesis of NH3 by the nitrogen reduction reaction (NRR) at low temperature (<65 °C) and atmospheric pressure using nanosized γ-Fe2O3 electrocatalysts were demonstrated. The activity and selectivity of the catalyst was investigated both in a 0.1 M KOH electrolyte and when incorporated into an anion-exchange membrane electrode assembly (MEA). In a half-reaction experiment conducted in a KOH electrolyte, the γ-Fe2O3 electrode presented a faradaic efficiency of 1.9% and a weight-normalized activity of 12.5 nmol h-1 mg-1 at 0.0 VRHE. However, the selectivity toward N2 reduction decreased at more negative potentials owing to the competing proton reduction reaction. When the γ-Fe2O3 nanoparticles were coated onto porous carbon paper to form an electrode for a MEA, their weight-normalized activity for N2 reduction was found to increase dramatically to 55.9 nmol h-1 mg-1. However, the weight- and area-normalized N2 reduction activities of γ-Fe2O3 decreased progressively from 35.9 to 14.8 nmol h-1 mg-1 and from 0.105 to 0.043 nmol h-1 cm-2 act, respectively, during a 25 h MEA durability test. In summary, a study of the fundamental behavior and catalytic activity of γ-Fe2O3 nanoparticles in the electrochemical synthesis of NH3 under low temperature and pressure is presented. © 2017 American Chemical Society-
dc.description.uri1-
dc.language영어-
dc.publisherAMER CHEMICAL SOC-
dc.subjectElectrocatalyst-
dc.subjectElectrochemical ammonia synthesis-
dc.subjectIron oxide-
dc.subjectMembrane electrode assembly-
dc.titleElectrochemical Synthesis of NH3 at Low Temperature and Atmospheric Pressure Using a γ-Fe2O3 Catalyst-
dc.typeArticle-
dc.type.rimsART-
dc.identifier.wosid000414825900158-
dc.identifier.scopusid2-s2.0-85033489288-
dc.identifier.rimsid61687ko
dc.date.tcdate2018-10-01-
dc.contributor.affiliatedAuthorDokyoon Kim-
dc.contributor.affiliatedAuthorYung-Eun Sung-
dc.identifier.doi10.1021/acssuschemeng.7b02890-
dc.identifier.bibliographicCitationACS SUSTAINABLE CHEMISTRY & ENGINEERING, v.5, no.11, pp.10986 - 10995-
dc.citation.titleACS SUSTAINABLE CHEMISTRY & ENGINEERING-
dc.citation.volume5-
dc.citation.number11-
dc.citation.startPage10986-
dc.citation.endPage10995-
dc.date.scptcdate2018-10-01-
dc.description.wostc11-
dc.description.scptc20-
dc.description.journalClass1-
dc.description.journalRegisteredClassscie-
dc.description.journalRegisteredClassscopus-
dc.subject.keywordAuthorElectrocatalyst-
dc.subject.keywordAuthorElectrochemical ammonia synthesis-
dc.subject.keywordAuthorIron oxide-
dc.subject.keywordAuthorMembrane electrode assembly-
Appears in Collections:
Center for Nanoparticle Research(나노입자 연구단) > 1. Journal Papers (저널논문)
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