Journal of Materials Chemistry A
Cobalt single-atoms anchored on porphyrinic triazine-based frameworks as bifunctional electrocatalysts for oxygen reduction and hydrogen evolution reactions†
Jun-Dong Yi, a Rui Xu, ab Guo-Liang Chai, a Teng Zhang,a Ketao Zang,c Bing Nan,d Hua Lin, a Yu-Lin Liang,d Jiangquan Lv,ab Jun Luo,c Rui Si, d Yuan-Biao Huang *a and Rong Cao *ab
a State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou 350002, P. R. China
E-mail: ybhuang@fjirsm.ac.cn, rcao@fjirsm.ac.cn
b University of the Chinese Academy of Sciences, Beijing 100049, China
c Center for Electron Microscopy, Institute for New Energy Materials and Low-Carbon Technologies, School of Materials, Tianjin University of Technology, Tianjin 300384, China
d Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201204, China
Designing and fabrication of highly active single-atom catalysts (SACs) with maximized atomic efficiency is highly desirable but still remains a great challenge. Herein, highly active and stable cobalt single-atoms with a Co–N4 moiety were uniformly anchored on a porous porphyrinic triazine-based framework (CoSAs/PTF) by a simple ionothermal method. Due to the abundant single-atom Co–N4 species, the hierarchical porous structure and the good conductivity, the resultant catalyst is highly active for the electrocatalytic oxygen reduction reaction (ORR) and hydrogen evolution reaction (HER). For the ORR, a more positive half-wave potential of 0.808 V (vs. RHE) was achieved, compared with commercial benchmark Pt/C (0.806 V). Furthermore, a small onset potential of 21 mV and a low Tafel slope of 50 mV per decade were obtained for the HER. The porphyrin-like structure was found to stabilize the CoSAs effectively, thus leading to long-term durability and a remarkable methanol-tolerant behavior. This bifunctional single-atom catalyst might be a promising candidate to replace Pt-based electrocatalysts in electrolysers and fuel cells.
This article is part of the themed collection: International Year of the Periodic Table : Single Atoms as Active Catalysts
You have access to this article
https://doi.org/10.1039/C8TA09490J
J. Mater. Chem. A, 2019,7, 1252-1259
Cobalt single-atoms anchored on porphyrinic triazine-based frameworks as bifunctional electrocatalysts for oxygen reduction and hydrogen evolution reactions
J. Yi, R. Xu, G. Chai, T. Zhang, K. Zang, B. Nan, H. Lin, Y. Liang, J. Lv, J. Luo, R. Si, Y. Huang and R. Cao, J. Mater. Chem. A, 2019, 7, 1252
DOI: 10.1039/C8TA09490J
If you are not the author of this article and you wish to reproduce material from it in a third party non-RSC publication you must formally request permission using Copyright Clearance Center. Go to our Instructions for using Copyright Clearance Center page for details.
Authors contributing to RSC publications (journal articles, books or book chapters) do not need to formally request permission to reproduce material contained in this article provided that the correct acknowledgement is given with the reproduced material.
Reproduced from Ref. XX with permission from the Centre National de la Recherche Scientifique (CNRS) and The Royal Society of Chemistry.
Reproduced from Ref. XX with permission from the PCCP Owner Societies.
Reproduced from Ref. XX with permission from the European Society for Photobiology, the European Photochemistry Association, and The Royal Society of Chemistry.
For reproduction of material from all other RSC journals and books:
Reproduced from Ref. XX with permission from The Royal Society of Chemistry.
If the material has been adapted instead of reproduced from the original RSC publication "Reproduced from" can be substituted with "Adapted from".
In all cases the Ref. XX is the XXth reference in the list of references.
If you are the author of this article you do not need to formally request permission to reproduce figures, diagrams etc. contained in this article in third party publications or in a thesis or dissertation provided that the correct acknowledgement is given with the reproduced material.
[Original citation] - Reproduced by permission of The Royal Society of Chemistry (RSC) on behalf of the Centre National de la Recherche Scientifique (CNRS) and the RSC
[Original citation] - Reproduced by permission of the PCCP Owner Societies
[Original citation] - Reproduced by permission of The Royal Society of Chemistry (RSC) on behalf of the European Society for Photobiology, the European Photochemistry Association, and RSC
[Original citation] - Reproduced by permission of The Royal Society of Chemistry
If you are the author of this article you still need to obtain permission to reproduce the whole article in a third party publication with the exception of reproduction of the whole article in a thesis or dissertation.
Jun-Dong Yi
Rui Xu
Guo-Liang Chai
Teng Zhang
Ketao Zang
Bing Nan
Hua Lin
Yu-Lin Liang
Jiangquan Lv
Jun Luo
Rui Si
Yuan-Biao Huang
Rong Cao