National Taiwan Ocean University Institutional Repository:Item 987654321/26476
English  |  正體中文  |  简体中文  |  全文笔数/总笔数 : 28588/40619
造访人次 : 4189805      在线人数 : 53
RC Version 4.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
搜寻范围 进阶搜寻


题名: Effects of rapid process on the conductivity of multiple elements doped ceria-based electrolyte
作者: Horng-Yi Chang;Yao-Ming Wang;Chia-Hsin Lin;Syh-Yuh Cheng
贡献者: 國立臺灣海洋大學:輪機工程學系
关键词: Ceria;Ionic conductivity;Solid oxide fuel cell;Citric acid-based combustion technique;Microwave sintering
日期: 2011-02-15
上传时间: 2011-10-20T08:35:59Z
出版者: Journal of Power Sources
摘要: Abstract:The citric acid-based combustion technique (SV) for powder preparation and the rapid microwave sintering (MW) process are used to lower the synthesizing temperature and to shorten the processing time then to modify the grain boundary resistance and oxygen vacancies mobility in multiple elements doped ceria-based electrolyte (LSBC). Nanoparticles of less than 50 nm with a pure fluorite structure are prepared by SV method at a low temperature of 600 °C. Microwave sintering lowers the sintering temperature to 1400 °C from the conventional sintering (CS) temperature of 1500 °C needed for solid-state (SS) prepared LSBC, and requires only 15 min of sintering time. The SV sample conventionally sintered at 1400 °C–6 h reaches a conductivity of 0.006 S cm−1. When the SV samples are microwave sintered at 1400 °C–15 min, they achieve a conductivity as high as 0.01 S cm−1 measured at 600 °C. Microwave sintering reduces the grain boundary resistance of both SS and SV samples. The migration enthalpy (Hm) of 0.66 eV in the SS-MW and SV-MW samples is similar to that of the fully densified SS-CS sample. The Schottky barrier height can be adjusted by SV powder preparation and by the MW process using a slightly lower sintering temperature and with a shorter processing time for multiple elements doped solid electrolyte.
關聯: 196(4), pp.1704–1711
显示于类别:[輪機工程學系] 期刊論文


档案 描述 大小格式浏览次数



著作權政策宣告: 本網站之內容為國立臺灣海洋大學所收錄之機構典藏,無償提供學術研究與公眾教育等公益性使用,請合理使用本網站之內容,以尊重著作權人之權益。
網站維護: 海大圖資處 圖書系統組
DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - 回馈