Advanced   Register
IMR OpenIR  > 中国科学院金属研究所  > 期刊论文

题名: Long-term oxidation and electrical behavior of Nb-doped Ti3SiC2 as solid oxide fuel cell interconnects
作者: Zheng, Li-Li;  Li, Xi-Chao;  Hua, Qing-Song;  Dai, Zuo-Qiang;  Zhang, Tie-Zhu;  Qian, Yu-Hai;  Xu, Jing-Jun;  Li, Mei-Shuan
发表日期: 2017-7-1
摘要: Nb-doped Ti3SiC2 compounds ((Ti1-xNbx)(3)SiC2, x=0%, 2%, 5%, 7%, and 10%) as novel interconnect materials of intermediate temperature solid oxide fuel cell (IT-SOFC) were studied in the simulated cathode atmosphere. The long-term oxidation behaviors and area-specific resistance (ASR) of these compounds have been investigated at 800 degrees C up to 700hours. Among these compounds, (Ti0.95Nb0.05)(3)SiC2 shows the best oxidation resistance and lowest postoxidation ASR (5.6mcm(2) after exposure at 800 degrees C in air for 700hours), endowing it a great promising material in the application as interconnect of IT-SOFC. After oxidation, Nb is mainly doped uniformly into the lattice of rutile-TiO2 (r-TiO2) grains formed on the tested compounds. Nb doping could decrease the concentrations of both oxygen vacancies and titanium interstitials in r-TiO2. As a result, the oxidation rate of (Ti,Nb)(3)SiC2 decreases remarkably, the structure of the oxide scale changes from a duplex layer of TiO2 outer layer and TiO2+SiO2 mixture inner layer to a single mixture layer. Nb doping also increases the amount of semifree electrons, causing the significant reduce of the postoxidation ASR of (Ti,Nb)(3)SiC2.
Appears in Collections:中国科学院金属研究所_期刊论文

Files in This Item:

There are no files associated with this item.

Recommended Citation:
Zheng, Li-Li,Li, Xi-Chao,Hua, Qing-Song,et al. Long-term Oxidation And Electrical Behavior Of Nb-doped Ti3sic2 As Solid Oxide Fuel Cell Interconnects[J]. Journal Of The American Ceramic Society,2017,100(7):3155-3164.

SCI Citaion Data:
 Recommend this item
 Sava as my favorate item
 Show this item's statistics
 Export Endnote File
Google Scholar
 Similar articles in Google Scholar
 [Zheng, Li-Li]'s Articles
 [Li, Xi-Chao]'s Articles
 [Hua, Qing-Song]'s Articles
CSDL cross search
 Similar articles in CSDL Cross Search
 [Zheng, Li-Li]‘s Articles
 [Li, Xi-Chao]‘s Articles
 [Hua, Qing-Song]‘s Articles
Scirus search
 Similar articles in Scirus
Related Copyright Policies
Social Bookmarking
  Add to CiteULike  Add to Connotea  Add to  Add to Digg  Add to Reddit 
所有评论 (0)
内 容:
Email:  *
验证码:   刷新
标 题:
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.



Valid XHTML 1.0!
Copyright © 2007-2018  中国科学院金属研究所  -Feedback
Powered by CSpace