Investigation on the properties of Ta doped Ti3SiC2 as solid oxide fuel cell interconnects

doi:10.1039/c7ra07215e

IMR OpenIR

	Investigation on the properties of Ta doped Ti3SiC2 as solid oxide fuel cell interconnects
	Zheng, Lili 1,2; Hua, Qingsong 1; Li, Xichao 2,3; Li, Meishuan 2; Qian, Yuhai 2; Xu, Jingjun 2; Dai, Zuoqiang 1; Chen, Tao 1; Zhang, Jianmin 1; Zhang, Hongxin 1
通讯作者	Zheng, Lili() ; Li, Xichao(lixc@qibebt.ac.cn)
	2017
发表期刊	RSC ADVANCES
ISSN	2046-2069
卷号	7 期号:67 页码:42350-42356
摘要	The oxidation behaviours and electrical properties of 5 at% Ta doped Ti3SiC2 solid solution have been investigated at 800 degrees C in air for up to 500 h. The oxidation kinetics of (Ti0.95Ta0.05)(3)SiC2 follows a parabolic law. The oxidation rate constant is 7.33 x 10(-14) g(2) cm(-4) s(-1), which is lower than those of Ti3SiC2, (Ti0.95Nb0.05)(3)SiC2 and Crofer 22 APU. Ta doped r-TiO2 formed (Ti0.95Ta0.05)(3)SiC2 during the oxidation process. Ta doping can limit the outward diffusion of Ti by decreasing the native Ti interstitials concentration and simultaneously restraining the inward diffusion of oxygen by decreasing the O vacancy concentration. As a result, the oxidation resistance is significantly improved and the oxide scale structure of Ti3SiC2 changes from a double-layer to a monolithic layer. The ASR of (Ti0.95Ta0.05)(3)SiC2 after oxidation at 800 degrees C in air for 500 h is 29.5 mU cm(2), which is much lower than that of Ti3SiC2. Ta doping can increase the electron concentration in r-TiO2 and thereby increase the electrical conductivity of r-TiO2. Therefore, the ASR of (Ti0.95Ta0.05)(3)SiC2 after oxidation is lower compared to that of Ti3SiC2.
资助者	National Science Foundation of China ; Scientific Research Start-up Fund of Qingdao University
DOI	10.1039/c7ra07215e
收录类别	SCI
语种	英语
资助项目	National Science Foundation of China[51271191] ; National Science Foundation of China[51571205] ; National Science Foundation of China[41406106] ; Scientific Research Start-up Fund of Qingdao University[41117010089]
WOS研究方向	Chemistry
WOS类目	Chemistry, Multidisciplinary
WOS记录号	WOS:000409147500044
出版者	ROYAL SOC CHEMISTRY
引用统计	被引频次：10[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/125006
专题	中国科学院金属研究所
通讯作者	Zheng, Lili; Li, Xichao
作者单位	1.Qingdao Univ, Coll Mech & Elect Engn, Power & Energy Storage Syst Res Ctr, Qingdao 266071, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 3.Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Qingdao 266101, Peoples R China
推荐引用方式 GB/T 7714	Zheng, Lili,Hua, Qingsong,Li, Xichao,et al. Investigation on the properties of Ta doped Ti3SiC2 as solid oxide fuel cell interconnects[J]. RSC ADVANCES,2017,7(67):42350-42356.
APA	Zheng, Lili.,Hua, Qingsong.,Li, Xichao.,Li, Meishuan.,Qian, Yuhai.,...&Zhang, Hongxin.(2017).Investigation on the properties of Ta doped Ti3SiC2 as solid oxide fuel cell interconnects.RSC ADVANCES,7(67),42350-42356.
MLA	Zheng, Lili,et al."Investigation on the properties of Ta doped Ti3SiC2 as solid oxide fuel cell interconnects".RSC ADVANCES 7.67(2017):42350-42356.