完整後設資料紀錄
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dc.contributor.authorChen, Yuen_US
dc.contributor.authorYoo, Seonyoungen_US
dc.contributor.authorZhang, Weilinen_US
dc.contributor.authorKim, Jun Hyuken_US
dc.contributor.authorZhou, Yucunen_US
dc.contributor.authorPei, Kaien_US
dc.contributor.authorKane, Nicholasen_US
dc.contributor.authorZhao, Boteen_US
dc.contributor.authorMurphy, Ryanen_US
dc.contributor.authorChoi, YongManen_US
dc.contributor.authorLiu, Meilinen_US
dc.date.accessioned2019-09-02T07:46:13Z-
dc.date.available2019-09-02T07:46:13Z-
dc.date.issued2019-08-01en_US
dc.identifier.issn2155-5435en_US
dc.identifier.urihttp://dx.doi.org/10.1021/acscatal.9b01738en_US
dc.identifier.urihttp://hdl.handle.net/11536/152616-
dc.description.abstractEfficient electrocatalysts for oxygen reduction reaction (ORR) are critical to high-performance energy conversion and storage devices. As an important family of functional materials, alkaline earth metal oxides are generally considered inert toward electrochemical reactions. Here we report the remarkable enhancement of ORR activity and durability of electrodes enabled by surface modification with, a precursor of barium nitrate. During cell start-up process, an ORR active cobaltite catalyst was in situ formed on the electrode surface, as confirmed by scanning transmission electron microscopy (STEM) analysis. A combination of in situ/operando Raman and electrochemical impedance study suggests that the transition from nitrate to cobaltite may occur at similar to 565 degrees C. The peak power density of a single cell at 750 degrees C is increased from similar to 0.85 to similar to 1.15 W cm(-2) (35% increase) by the surface modification, demonstrating the remarkable enhancement of electrocatalytic activity under realistic operating conditions.en_US
dc.language.isoen_USen_US
dc.subjectoxygen reduction reactionen_US
dc.subjectperovskiteen_US
dc.subjectbarium cobaltiteen_US
dc.subjectfuel cellsen_US
dc.subjectnanoparticlesen_US
dc.titleEffective Promotion of Oxygen Reduction Reaction by in Situ Formation of Nanostructured Catalysten_US
dc.typeArticleen_US
dc.identifier.doi10.1021/acscatal.9b01738en_US
dc.identifier.journalACS CATALYSISen_US
dc.citation.volume9en_US
dc.citation.issue8en_US
dc.citation.spage7137en_US
dc.citation.epage7142en_US
dc.contributor.department光電學院zh_TW
dc.contributor.departmentCollege of Photonicsen_US
dc.identifier.wosnumberWOS:000480503700054en_US
dc.citation.woscount0en_US
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