Oxygen-Reduction Reaction on Preferred Oriented Gd0.1Ce0.9O2-delta Films

doi:10.1021/acs.jpcc.8b01202

	Oxygen-Reduction Reaction on Preferred Oriented Gd0.1Ce0.9O2-delta Films
	Zhao, Zhe 1,2; Shang, Lei 1,2; Wu, Weiming 1; Huang, Zhidong 1,2; Qi, Huiying 1,2; Cheng, Mojie 1
刊名	JOURNAL OF PHYSICAL CHEMISTRY C
	2018-04-19
卷号	122 期号:15 页码:8396-8405
ISSN号	1932-7447
DOI	10.1021/acs.jpcc.8b01202
文献子类	Article
英文摘要	Oxygen-reduction reaction (ORR) on Gd0.1Ce0.9O2-delta (GDC) films with preferential orientations of [100] and [111] have been investigated by using electrochemical impedance spectra combined with direct current (DC) bias. Without DC bias, apparent activation energy for ORR is 0.43 eV on GDC(100) and 1.37 eV on GDC(111). When negative bias increases from 0 to 0.250 V, apparent activation energy for ORR on either GDC(100) or (111) initially increases, attains the maximums of 1.6 eV on GDC(100) and 1.65 eV on GDC(111) and then decreases linearly with the slope of -2.18 eV/V on GDC(100) and -5.17 eV/V on GDC(111). On GDC(100), reaction rate of the key rate-determining step (RDS) exhibits oxygen pressure-dependent exponents of 0.439 under open circuit voltage (OCV) conditions and 0.379 under 0.150 V negative bias, whereas on GDC(111), reaction rate of the key RDS exhibits oxygen pressure-dependent exponents of 0.397 under OCV conditions and 0.177 under 0.150 V negative bias.
WOS关键词	OXIDE FUEL-CELLS ; DEFINED SURFACE PLANES ; GADOLINIA DOPED CERIA ; ELECTRONIC-STRUCTURE ; RAMAN-SPECTROSCOPY ; CEO2 NANOCRYSTALS ; EXCHANGE ; OXIDATION ; KINETICS ; CATHODE
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000430896500040
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/167144]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
通讯作者	Cheng, Mojie
作者单位	1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Div Fuel Cells, Dalian 116023, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Zhe,Shang, Lei,Wu, Weiming,et al. Oxygen-Reduction Reaction on Preferred Oriented Gd0.1Ce0.9O2-delta Films[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2018,122(15):8396-8405.
APA	Zhao, Zhe,Shang, Lei,Wu, Weiming,Huang, Zhidong,Qi, Huiying,&Cheng, Mojie.(2018).Oxygen-Reduction Reaction on Preferred Oriented Gd0.1Ce0.9O2-delta Films.JOURNAL OF PHYSICAL CHEMISTRY C,122(15),8396-8405.
MLA	Zhao, Zhe,et al."Oxygen-Reduction Reaction on Preferred Oriented Gd0.1Ce0.9O2-delta Films".JOURNAL OF PHYSICAL CHEMISTRY C 122.15(2018):8396-8405.