Pham, T., Sharifi, T., Sandström, R., Siljebo, W., Shchukarev, A., Kordas, K., Wågberg, T., Mikkola, J. (2017) Robust hierarchical 3D carbon foam electrode for efficient water electrolysis. Scientific Reports, 7 (1), doi:10.1038/s41598-017-05215-1
Robust hierarchical 3D carbon foam electrode for efficient water electrolysis
|Author:||Pham, Tung Ngoc1,2; Sharifi, Tiva3; Sandström, Robin3;|
1Technical Chemistry, Department of Chemistry, Chemical-Biological Centre, Umeå University
2Department of Chemistry, The University of Danang, University of Science and Technology
3Department of Physics, Umeå University
4Microelectronics Research Unit, University of Oulu
5Industrial Chemistry & Reaction Engineering, Department of Chemical Engineering, Process Chemistry Centre, Åbo Akademi University
|Online Access:||PDF Full Text (PDF, 1.7 MB)|
|Persistent link:|| http://urn.fi/urn:nbn:fi-fe201709228691
Nature Publishing Group,
|Publish Date:|| 2017-09-22
Herein we report a 3D heterostructure comprising a hierarchical macroporous carbon foam that incorporates mesoporous carbon nanotubes decorated with cobalt oxide nanoparticles as an unique and highly efficient electrode material for the oxygen evolution reaction (OER) in electrocatalytic water splitting. The best performing electrode material showed high stability after 10 h, at constant potential of 1.7 V vs. RHE (reversible hydrogen electrode) in a 0.1 M KOH solution and high electrocatalytic activity in OER with low overpotential (0.38 V vs RHE at 10 mA cm⁻²). The excellent electrocatalytic performance of the electrode is rationalized by the overall 3D macroporous structure and with the firmly integrated CNTs directly grown on the foam, resulting in a large specific surface area, good electrical conductivity, as well as an efficient electrolyte transport into the whole electrode matrix concurrent with an ability to quickly dispose oxygen bubbles into the electrolyte. The eminent properties of the three-dimensional structured carbon matrix, which can be synthesized through a simple, scalable and cost effective pyrolysis process show that it has potential to be implemented in large-scale water electrolysis systems.
|Type of Publication:||
A1 Journal article – refereed
|Field of Science:||
116 Chemical sciences
216 Materials engineering
The Bio4Energy programme & the Kempe Foundations are acknowledged for funding. This work is part of the “Artificial Leaf ” project funded by the Knut & Alice Wallenberg foundation. Support from the Academy of Finland (SuplaCat) is acknowledged. This work was supported by the University of Danang, University of Science and Technology, code number of project: T2017-02-101.
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