Supplementary material for Zinc doping enhances the electrocatalytic properties of cobalt borides for the hydrogen evolution reaction [Dataset]
Energy Dispersive X-ray Spectroscopy (EDS) was used to obtain information about the chemical nature of the Co-B and Co-Zn-B samples. As observed in Supplementary Figure S1A, the EDS profiles show the presence of cobalt, oxygen and boron in the Co-B sample. If the material is prepared with the additi...
| Autores: | , , , , , , , |
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| Tipo de recurso: | conjunto de datos |
| Fecha de publicación: | 2022 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/334224 |
| Acceso en línea: | http://hdl.handle.net/10261/334224 https://www.frontiersin.org/articles/10.3389/fenrg.2022.901395/full#supplementary-material |
| Access Level: | acceso abierto |
| Palabra clave: | Zn doping Cobalt borides HER Water splitting Electrolyzer http://metadata.un.org/sdg/7 Ensure access to affordable, reliable, sustainable and modern energy for all |
| Sumario: | Energy Dispersive X-ray Spectroscopy (EDS) was used to obtain information about the chemical nature of the Co-B and Co-Zn-B samples. As observed in Supplementary Figure S1A, the EDS profiles show the presence of cobalt, oxygen and boron in the Co-B sample. If the material is prepared with the addition of Zn(NO3)2, a new intense peak is observed in the EDS profile (Supplementary Figure S1B), which is attributed to the presence of Zn in the material composition Moreover, EDS mapping was performed to further check the distribution of Co and Zn atoms in HRTEM images.The particle size distributions of the two samples are shown in Supplementary Figure S2. To assess whether the HER performance damaged the chemical nature of the Co-Zn-B material, CV before and after the HER measurements were performed. Supplementary Figure S3 shows that the CV-profile does not exhibit any significant change in the electrochemical behavior of Co-Zn-B, suggesting strong stability under HER working conditions. Furthermore, to confirm the high stability of the Co-Zn-B sample, chronopotentiometric (CP) measurements were performed at a fixed current density of −5 mA cm−2 (Supplementary Figure S4).-- Creative Commons Attribution License (CC BY). |
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