Nitrogen-doped cobalt phosphate@nanocarbon hybrids for efficient electrocatalytic oxygen reduction

Zhou, Tianhua, Du, Yonghua, Yin, Shengming, Tian, Xuezeng, Yang, Hongbin, Wang, Xin, Liu, Bin, Zheng, Haimei, Qiao, Shizhang and Xu, Rong (2016) Nitrogen-doped cobalt phosphate@nanocarbon hybrids for efficient electrocatalytic oxygen reduction. Energy and Environmental Science, 9 8: 2563-2570. doi:10.1039/c6ee01297c


Author Zhou, Tianhua
Du, Yonghua
Yin, Shengming
Tian, Xuezeng
Yang, Hongbin
Wang, Xin
Liu, Bin
Zheng, Haimei
Qiao, Shizhang
Xu, Rong
Title Nitrogen-doped cobalt phosphate@nanocarbon hybrids for efficient electrocatalytic oxygen reduction
Journal name Energy and Environmental Science   Check publisher's open access policy
ISSN 1754-5706
1754-5692
Publication date 2016-08-01
Year available 2016
Sub-type Article (original research)
DOI 10.1039/c6ee01297c
Open Access Status Not yet assessed
Volume 9
Issue 8
Start page 2563
End page 2570
Total pages 8
Place of publication Cambridge, United Kingdom
Publisher Royal Society of Chemistry
Language eng
Abstract The development of efficient non-noble metal electrocatalysts for the oxygen reduction reaction (ORR) is still highly desirable before non-noble metal catalysts can replace platinumcatalysts. Herein, we have synthesized a new type of ORR catalyst, Co-3(PO4)(2)C-N/rGOA, containing N-coordinated cobalt phosphate, through the thermal treatment of a phosphonate-basedmetal-organic framework (MOF). Co-3(PO4)(2)C-N/rGOA exhibits not only a comparable onset potential and half-wave potential but also superior stability to the commercial Pt/C catalyst for the ORR in alkaline solutions (0.1 and 1.0 M KOH). A combination of structural characterization (e.g., XPS, HRTEM, XANES, and EXAFS) and electrochemical analysis shows that the high ORR activity of the Co-3(PO4)(2)C-N/rGOA catalyst should be attributed to the co-existence of N-doped graphitic carbon and the cobalt phosphate with Co-N species that boost the activity of the cobalt phosphate. These findings open an avenue for exploring the use of phosphonate-based MOFs for energy conversion and storage applications.
Formatted abstract
The development of efficient non-noble metal electrocatalysts for the oxygen reduction reaction (ORR) is still highly desirable before non-noble metal catalysts can replace platinum catalysts. Herein, we have synthesized a new type of ORR catalyst, Co3(PO4)2C-N/rGOA, containing N-coordinated cobalt phosphate, through the thermal treatment of a phosphonate-based metal-organic framework (MOF). Co3(PO4)2C-N/rGOA exhibits not only a comparable onset potential and half-wave potential but also superior stability to the commercial Pt/C catalyst for the ORR in alkaline solutions (0.1 and 1.0 M KOH). A combination of structural characterization (e.g., XPS, HRTEM, XANES, and EXAFS) and electrochemical analysis shows that the high ORR activity of the Co3(PO4)2C-N/rGOA catalyst should be attributed to the co-existence of N-doped graphitic carbon and the cobalt phosphate with Co-N species that boost the activity of the cobalt phosphate. These findings open an avenue for exploring the use of phosphonate-based MOFs for energy conversion and storage applications.
Keyword Chemistry, Multidisciplinary
Energy & Fuels
Engineering, Chemical
Environmental Sciences
Chemistry
Energy & Fuels
Engineering
Environmental Sciences & Ecology
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: HERDC Pre-Audit
Australian Institute for Bioengineering and Nanotechnology Publications
 
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