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Title: Effect of Sr doping on structural, electrical and electrochemical properties of Nd2-xSrxNiO4+δ mixed ionic-electronic conductors
Authors: Punde, J D
Khandale, A P
Bhoga, S S
Keywords: Cathode;Mixed ionic-electronic conductor;Electrochemical impedance spectroscopy;Area specific resistance
Issue Date: May-2013
Publisher: NISCAIR-CSIR, India
Abstract: The Nd2-xSrxNiO4+δ(x = 0.2 and 0.4) solid solutions prepared by combustion synthesis are of submicron/superfine crystallites size. The linear variation in dc conductivity with oxygen partial pressure around Nd1.6Sr0.4NiO4+δ is understood on the basis of defect chemistry. The electrochemical properties of the cathode material, studied using electrochemical impedance spectroscopy, reveal area specific resistance (ASR) = 0.84 ohm cm2 at 973 K. The charge transfer process in cathode and across cathode-electrolyte interface is the rate limiting reaction.
Page(s): 376-380
ISSN: 0975-1041 (Online); 0019-5596 (Print)
Appears in Collections:IJPAP Vol.51(05) [May 2013]

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