电解质
电导率
质子
材料科学
化学工程
燃料电池
理论(学习稳定性)
无机化学
化学
电极
计算机科学
物理
物理化学
工程类
量子力学
机器学习
作者
Pooja Sawant,Salil Varma,B.N. Wani,S.R. Bharadwaj
标识
DOI:10.1016/j.ijhydene.2011.04.106
摘要
Barium cerate has high proton conductivity but poor chemical stability in presence of CO2 as well as H2O. However, barium zirconate is chemically stable but has poor protonic conductivity. To combine above two effects, BaCe0.8−xZrxY0.2O3−δ (BCZY, with x = 0.0, 0.2, 0.4, 0.6 and 0.8) powders were synthesized by a Pechini method. Lattice parameters as generated from X-ray diffraction studies were found to decrease with increase in Zr content. Compositions with x ≥ 0.4, were found to exhibit enhanced chemical stability in presence of carbon dioxide. Proton conductivity of BCZY samples were measured using impedance spectroscopy in moist N2 atmosphere and activation energy for proton conduction was determined. Based on this study, BaCe0.4Zr0.4Y0.2O3−δ composition was suggested as a suitable electrolyte material.
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