Weidler, Natascha ; Schuch, Jona ; Knaus, Florian ; Stenner, Patrick ; Hoch, Sascha ; Maljusch, Artjom ; Schaefer, Rolf ; Kaiser, Bernhard ; Jaegermann, Wolfram (2017)
X-ray Photoelectron Spectroscopic Investigation of of Plasma-Enhanced Chemical Vapor Deposited NiOx, NiOx(OH)y and CoNiOx(OH)y: Influence of the Chemical Composition on the Catalytic Activity for the Oxygen Evolution Reaction.
In: The Journal of Physical Chemistry C, 121 (12)
doi: 10.1021/acs.jpcc.6b12652
Article, Bibliographie
Abstract
We report here the plasma-enhanced chemical vapor deposition and electrocatalytic characterization of pure NiOx and NiOx(OH)y. Whereas NiOx is deposited if oxygen is used as a reactive gas, the use of air as a reactive gas leads to the deposition of the NiOx(OH)y, which is electrochemically more active than the NiOx. By recording X-ray photoelectron spectra from the as-deposited catalysts and after their electrochemical investigations, we determined that the electrochemical activity correlates with the amount of hydroxide sites on the surface. Such a behavior was already observed for CoOx and CoOx(OH)y. As a consequence, CoNiOx(OH)y was deposited using air as a reactive gas to study the influence of nickel on the electronic structure of CoOx(OH)y and its effect on the electrochemical activity.
| Item Type: | Article |
|---|---|
| Erschienen: | 2017 |
| Creators: | Weidler, Natascha ; Schuch, Jona ; Knaus, Florian ; Stenner, Patrick ; Hoch, Sascha ; Maljusch, Artjom ; Schaefer, Rolf ; Kaiser, Bernhard ; Jaegermann, Wolfram |
| Type of entry: | Bibliographie |
| Title: | X-ray Photoelectron Spectroscopic Investigation of of Plasma-Enhanced Chemical Vapor Deposited NiOx, NiOx(OH)y and CoNiOx(OH)y: Influence of the Chemical Composition on the Catalytic Activity for the Oxygen Evolution Reaction |
| Language: | English |
| Date: | 23 February 2017 |
| Publisher: | ACS Publications |
| Journal or Publication Title: | The Journal of Physical Chemistry C |
| Volume of the journal: | 121 |
| Issue Number: | 12 |
| DOI: | 10.1021/acs.jpcc.6b12652 |
| URL / URN: | http://doi.org/10.1021/acs.jpcc.6b12652 |
| Abstract: | We report here the plasma-enhanced chemical vapor deposition and electrocatalytic characterization of pure NiOx and NiOx(OH)y. Whereas NiOx is deposited if oxygen is used as a reactive gas, the use of air as a reactive gas leads to the deposition of the NiOx(OH)y, which is electrochemically more active than the NiOx. By recording X-ray photoelectron spectra from the as-deposited catalysts and after their electrochemical investigations, we determined that the electrochemical activity correlates with the amount of hydroxide sites on the surface. Such a behavior was already observed for CoOx and CoOx(OH)y. As a consequence, CoNiOx(OH)y was deposited using air as a reactive gas to study the influence of nickel on the electronic structure of CoOx(OH)y and its effect on the electrochemical activity. |
| Divisions: | 11 Department of Materials and Earth Sciences 11 Department of Materials and Earth Sciences > Material Science 11 Department of Materials and Earth Sciences > Material Science > Surface Science 07 Department of Chemistry 07 Department of Chemistry > Eduard Zintl-Institut > Physical Chemistry 07 Department of Chemistry > Computational Physical Chemistry |
| Date Deposited: | 19 Mar 2017 12:32 |
| Last Modified: | 15 Jul 2020 09:08 |
| PPN: | |
| Funders: | The authors thanks Evonik for the financial support., Part of this work was financed by the German federal Ministry of Education and Research within the Project SusHy and by the Graduate School of Excellence Energy Science and Engineering. |
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