RCEES OpenIR  > 环境水质学国家重点实验室
Controlling crystal orientation in multilayered heterostructures toward high electro-catalytic activity for oxygen reduction reaction
Zheng, Yun; Li, Yifeng; Wu, Tong; Zhao, Chenhuan; Zhang, Wenqiang; Zhu, Jianxin; Li, Zhanping; Chen, Jing; Wang, Jianchen; Yu, Bo; Zhang, Jiujun
2019-08-01
Source PublicationNANO ENERGY
ISSN2211-2855
Volume62Pages:521-529
AbstractNd0.8Sr1.2CoO4 +/- 8 (NSC214)/Nd0.5Sr0.5CoO3-8(NSC113) multilayered heterostructured thin film cathodes of SOFCs exhibit similar to 20 times difference in polarization resistance and catalytic activity toward oxygen reduction reaction (ORR), which are synthesized by pulsed laser deposition under different temperatures. The thin-films grown at 650 degrees C possess consistent crystal orientation, while those grown at 500 degrees C have different crystal orientations between NSC113 and NSC214 layers. As observed, they show similar to 10(2) times and similar to 10(1) times, respectively, higher ORR performance than a single-phase NSC113 thin-film electrode, as characterized by constructing full cell operated at intermediate-temperature. The origin of such performance differences is analyzed on the basis of crystal orientation by HRXRD, HRTEM, HAADF-STEM, TOF-SIMS, and DFT calculation, and the results indicate that the increased crystal orientations can significantly weaken the positive effects of heterointerface. This observation is attributed to the formation of excessive grain boundaries, which leads to increased formation energy of oxygen vacancy and limited oxygen transportation. These results highlight that the precise control of crystal orientation can make full use of heterostructure to enhance the ORR performance of electrochemical devices.
Department环境水质学国家重点实验室
KeywordCrystal orientation Multilayered heterostructures Oxygen reduction reaction (ORR) Intermediate-temperature SOFCs Perovskite electrodes
Document Type期刊论文
Identifierhttp://ir.rcees.ac.cn/handle/311016/42634
Collection环境水质学国家重点实验室
Affiliation1.Tsinghua Univ, Collaborat Innovat Ctr Adv Nucl Energy Technol, Inst Nucl & New Energy Technol INET, Beijing 100084, Peoples R China
2.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China
3.Tsinghua Univ, Beijing Key Lab Microanalyt Methods & Instrumenta, Dept Chem, Beijing 100084, Peoples R China
Recommended Citation
GB/T 7714
Zheng, Yun,Li, Yifeng,Wu, Tong,et al. Controlling crystal orientation in multilayered heterostructures toward high electro-catalytic activity for oxygen reduction reaction[J]. NANO ENERGY,2019,62:521-529.
APA Zheng, Yun.,Li, Yifeng.,Wu, Tong.,Zhao, Chenhuan.,Zhang, Wenqiang.,...&Zhang, Jiujun.(2019).Controlling crystal orientation in multilayered heterostructures toward high electro-catalytic activity for oxygen reduction reaction.NANO ENERGY,62,521-529.
MLA Zheng, Yun,et al."Controlling crystal orientation in multilayered heterostructures toward high electro-catalytic activity for oxygen reduction reaction".NANO ENERGY 62(2019):521-529.
Files in This Item: Download All
File Name/Size DocType Version Access License
Controlling crystal (7438KB)期刊论文出版稿开放获取CC BY-NC-SAView Download
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Zheng, Yun]'s Articles
[Li, Yifeng]'s Articles
[Wu, Tong]'s Articles
Baidu academic
Similar articles in Baidu academic
[Zheng, Yun]'s Articles
[Li, Yifeng]'s Articles
[Wu, Tong]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Zheng, Yun]'s Articles
[Li, Yifeng]'s Articles
[Wu, Tong]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: Controlling crystal orientation in multilayered heterostructures toward high electro-catalytic activity for oxygen reduction reaction.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

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