完整後設資料紀錄
DC 欄位語言
dc.contributor.authorCheng, Hsyi-Enen_US
dc.contributor.authorLi, Wen-Lungen_US
dc.contributor.authorYang, Zu-Poen_US
dc.date.accessioned2020-01-02T00:04:22Z-
dc.date.available2020-01-02T00:04:22Z-
dc.date.issued2019-11-15en_US
dc.identifier.issn0360-3199en_US
dc.identifier.urihttp://dx.doi.org/10.1016/j.ijhydene.2019.09.188en_US
dc.identifier.urihttp://hdl.handle.net/11536/153414-
dc.description.abstractPt nanopillar-array 3D electrodes with nanopillar length of 150, 450 and 900 nm and nanopillar density of similar to 10(9) cm(-2) were fabricated. Their catalytic activity for hydrogen evolution reaction (HER) was evaluated by linear sweep voltammetry and electrochemical impedance spectroscopy. In comparison with straightly electrodeposited black Pt film and forged Pt sheet electrodes, the HER current density has been significantly improved by the nanopillar-array architecture. The overpotential of HER at current density of 10 mA cm(-2) at 26 degrees C is as low as 78 mV, lower than the black Pt film of 107 mV and the Pt sheet of 174 mV. The improvement of HER is ascribed to the low charge transfer resistance of the 3D electrode and the high desorption capability of hydrogen bubbles at the nanotips. Interestingly, the nanopillar-array 3D electrode has an optimal nanopillar length for HER. The mechanisms for the optimal nanopillar length were investigated here. (C) 2019 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.en_US
dc.language.isoen_USen_US
dc.subjectElectrolysisen_US
dc.subjectNanoarchitectureen_US
dc.subject3D electrodeen_US
dc.subjectPlatinumen_US
dc.subjectHydrogen evolutionen_US
dc.titleEnhancement of hydrogen evolution reaction by Pt nanopillar-array electrode in alkaline media and the effect of nanopillar length on the electrode efficiencyen_US
dc.typeArticleen_US
dc.identifier.doi10.1016/j.ijhydene.2019.09.188en_US
dc.identifier.journalINTERNATIONAL JOURNAL OF HYDROGEN ENERGYen_US
dc.citation.volume44en_US
dc.citation.issue57en_US
dc.citation.spage30141en_US
dc.citation.epage30150en_US
dc.contributor.department光電系統研究所zh_TW
dc.contributor.departmentInstitute of Photonic Systemen_US
dc.identifier.wosnumberWOS:000498752900029en_US
dc.citation.woscount0en_US
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