Open AccessElectrical Properties of Ba3Ca1.18Nb1.82O9-δ Proton-Conducting Electrolyte Prepared by a Combustion Method
Author(s) -
Lei Bi,
Enrico Traversa
Publication year - 2013
Publication title -
ecs transactions
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.235
H-Index - 52
eISSN - 1938-6737
pISSN - 1938-5862
DOI - 10.1149/05701.1069ecst
Subject(s) - pellets , conductivity , electrolyte , materials science , proton conductor , dielectric spectroscopy , analytical chemistry (journal) , electrical resistivity and conductivity , proton , fast ion conductor , oxide , grain boundary , combustion , electrochemistry , inorganic chemistry , chemical engineering , mineralogy , chemistry , metallurgy , composite material , electrode , electrical engineering , microstructure , environmental chemistry , physics , quantum mechanics , engineering
Ba3Ca1.18Nb1.82O9-δ (BCN18), regarded as a promising proton-conducting electrolyte material for solid oxide fuel cells, is usually synthesized by a solid-state reaction because of the limited choice of Nb precursors. This study presents a wet chemical route for preparing BCN18 powders that were then sintered into pellets. Electrochemical impedance spectroscopy studies indicated that BCN18 pellets show proton conductivity, since their total conductivity in wet air was significantly larger than that in dry air. However, a detailed analysis showed that only the BCN18 bulk behaves as a proton conductor, while its grain boundary conductivity did not increase in wet air
Accelerating Research
Robert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom
Address
John Eccles HouseRobert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom