Electrochemical impedance measurement and analysis of anodic concentration polarization for pressurized solid oxide fuel cells

NCUIR > Engineering College > Departmant of Mechanical Engineering > journal & Dissertation > Item 987654321/108796

Please use this identifier to cite or link to this item: https://ir.lib.ncu.edu.tw/handle/987654321/108796

Title:	Electrochemical impedance measurement and analysis of anodic concentration polarization for pressurized solid oxide fuel cells
Authors:	施聖洋;Wu, P. C.;Jheng, H. S.;Shy, S. S.
Contributors:	工學院機械工程學系
Date:	2014-01-01
Issue Date:	2026-04-23 15:07:08 (UTC+8)
Publisher:	Electrochemical Society, Inc.;The Electrochemical Society
Abstract:	摘要： This paper investigates experimentally and analytically the effect of pressurization on the anodic concentration polarization of a planar anode-supported full cell with flow distributors in both anode and cathode using a recently-established high-pressure dual-chamber SOFC test facility. In it the power generating characteristics and electrochemical impedance spectra of such single-cell are measured at constant flow rates (anode: 0.5 slpm H2 + 0.4 slpm N2; cathode: 0.9 slpm air) and at a fixed operating temperature (T = 800°C) but with five different pressures (p) varying incrementally from to 1 atm to 5 atm. Measurements show that the high frequency arcs of impedance spectra decrease rather weakly with increasing p, while the low frequency arcs with characteristic frequencies occurring at about 0.5 ∼ 1 Hz decrease strongly with increasing p. It is found that the ohmic resistance is independent of p, but the polarization resistance and the calculated anodic concentration overvoltage decrease noticeably with increasing p. 其他題名： J. Electrochem. Soc 出版者： The Electrochemical Society 出版日期： 2014-01-01 出處： Journal of the Electrochemical Society, 2014-01, Vol.161 (4), p.F513-F517 資源來源： Institute of Physics Journals 版權： 2014 The Electrochemical Society 識別號： ISSN: 0013-4651 識別號： EISSN: 1945-7111 識別號： DOI: 10.1149/2.078404jes
Appears in Collections:	[Departmant of Mechanical Engineering ] journal & Dissertation

Files in This Item:

File	Description	Size	Format
index.html		0Kb	HTML	14	View/Open

社群 sharing

Loading...