Electrochemical performance of La2NiO4+delta cathode for intermediate-temperature solid oxide fuel cells

Title
Electrochemical performance of La2NiO4+delta cathode for intermediate-temperature solid oxide fuel cells
Author(s)
김혜경이윤기[이윤기]
Keywords
TRANSPORT; MICROSTRUCTURE; RESISTANCE; MECHANISMS; SURFACE
Issue Date
201505
Publisher
ELSEVIER SCI LTD
Citation
CERAMICS INTERNATIONAL, v.41, no.4, pp.5984 - 5991
Abstract
The application of the La2NiO4+delta (LNO), one of the Ruddlesden Popper series materials, as a cathode material for intermediate temperature solid oxide fuel cells is investigated in detail. LNO is synthesized via a complex method using ethylenediaminetetraacetic acid (EDTA) and citric acid. The effect of the calcination temperature of the LNO powder and the sintering temperature of the LNO cathode layer on the anode-supported cell, Ni-YSZ/YSZ/GDC/LNO, is characterized in view of the charge transfer resistance and the mass transfer resistance. Charge transfer resistance was not significantly affected by calcination and sintering temperature when the sintering temperature was not lower than the calcination temperature. Mass transfer resistance was primarily governed by the sintering temperature. The unit cell with the LNO cathode sintered at 1100 degrees C with 900 degrees C-calcined powder presented the lowest polarization resistance for all the measured temperatures and exhibited the highest fuel cell performances, with values of 1.25, 0.815, 0.485, and 0.263 W cm(-2) for temperatures of 800, 750, 700, and 650 degrees C, respectively. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
URI
http://hdl.handle.net/YU.REPOSITORY/32296http://dx.doi.org/10.1016/j.ceramint.2015.01.037
ISSN
0272-8842
Appears in Collections:
공과대학 > 신소재공학부 > Articles
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE