期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 37, 期 9, 页码 8051-8055出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2011.11.093
关键词
Lanthanum tungstate; Defect structure; Inherent disorder; Partial occupancy; Mixed conductor
资金
- Research Council of Norway [171157/V30, 191346, 190901, nn4604k]
Based on results from experimental and theoretical studies of the crystal structure of lanthanum tungstate (La(28-x)W(4+x)O(54+3/2x)v(2-3/2x)), we present a defect model comprising an inherently disordered and partially occupied oxide ion sublattice, which rationalizes hydration and ionic conduction of the materials in the undoped state. Applying the model to experimental conductivity data enables extraction of defect thermodynamics and transport parameters of protons, oxide ions and electronic defects. The standard enthalpy and entropy changes of the hydration of inherent oxygen vacancies are estimated to be -83 kJ/mol and -125 J/mol K (per mole of H2O), respectively. Copyright (C) 2011, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据