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

doi:10.1039/c7ra07215e

QIBEBT-IR > 先进储能材料与技术研究组

	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
	2017
发表期刊	RSC ADVANCES
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.
文章类型	Article
WOS标题词	Science & Technology ; Physical Sciences
DOI	10.1039/c7ra07215e
关键词[WOS]	FERRITIC STAINLESS-STEELS ; OXIDATION BEHAVIOR ; SOFC INTERCONNECT ; SEMICONDUCTING PROPERTIES ; TITANIUM-DIOXIDE ; DEFECT CHEMISTRY ; AIR ; ALLOYS
收录类别	SCI
语种	英语
WOS研究方向	Chemistry
项目资助者	National Science Foundation of China(51271191 ; Scientific Research Start-up Fund of Qingdao University(41117010089) ; 51571205 ; 41406106)
WOS类目	Chemistry, Multidisciplinary
WOS记录号	WOS:000409147500044
引用统计
文献类型	期刊论文
条目标识符	http://ir.qibebt.ac.cn/handle/337004/9741
专题	先进储能材料与技术研究组
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.