Cargando…
Investigation of Nanoscale Tungsten Carbide Enhanced Surface Carbon as a Platinum Support for the Hydrogen Evolution Reaction
Finding new supports and reducing the amount of platinum are key steps in the development of fuel cells. Herein, nanoscale WC is used as the support for a Pt catalyst, which was prepared by an improved strategy based on solution combustion and chemical reduction. After high-temperature carbonization...
Autores principales: | , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2023
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10144476/ https://www.ncbi.nlm.nih.gov/pubmed/37110954 http://dx.doi.org/10.3390/nano13081369 |
_version_ | 1785034109098131456 |
---|---|
author | Liu, Zhiwei Li, Yang Fang, Juan Wan, Qi |
author_facet | Liu, Zhiwei Li, Yang Fang, Juan Wan, Qi |
author_sort | Liu, Zhiwei |
collection | PubMed |
description | Finding new supports and reducing the amount of platinum are key steps in the development of fuel cells. Herein, nanoscale WC is used as the support for a Pt catalyst, which was prepared by an improved strategy based on solution combustion and chemical reduction. After high-temperature carbonization, the synthesized Pt/WC catalyst displayed a well-distributed size distribution and relatively fine particles, which consisted of WC and modified Pt nanoparticles. Meanwhile, the excess carbon of the precursor transformed into amorphous carbon in the high-temperature process. The formation carbon layer on the surface of the WC nanoparticles had a significant effect on the microstructure of the Pt/WC catalyst, improving the conductivity and stability of Pt. Linear sweep voltammetry and Tafel plots were used to evaluate the catalytic activity and mechanism for the hydrogen evolution reaction. As compared with the WC and commercial Pt/C catalysts, the Pt/WC catalyst showed the highest activity with η10 of 32.3 mV and a Tafel slope of 30 mV·dec(−1) towards HER in acidic solution. These studies confirm that the formation of surface carbon can increase material stability and conductivity, improving the synergistic relationships between Pt and WC catalysts, leading to an increase of catalytic activity. |
format | Online Article Text |
id | pubmed-10144476 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-101444762023-04-29 Investigation of Nanoscale Tungsten Carbide Enhanced Surface Carbon as a Platinum Support for the Hydrogen Evolution Reaction Liu, Zhiwei Li, Yang Fang, Juan Wan, Qi Nanomaterials (Basel) Article Finding new supports and reducing the amount of platinum are key steps in the development of fuel cells. Herein, nanoscale WC is used as the support for a Pt catalyst, which was prepared by an improved strategy based on solution combustion and chemical reduction. After high-temperature carbonization, the synthesized Pt/WC catalyst displayed a well-distributed size distribution and relatively fine particles, which consisted of WC and modified Pt nanoparticles. Meanwhile, the excess carbon of the precursor transformed into amorphous carbon in the high-temperature process. The formation carbon layer on the surface of the WC nanoparticles had a significant effect on the microstructure of the Pt/WC catalyst, improving the conductivity and stability of Pt. Linear sweep voltammetry and Tafel plots were used to evaluate the catalytic activity and mechanism for the hydrogen evolution reaction. As compared with the WC and commercial Pt/C catalysts, the Pt/WC catalyst showed the highest activity with η10 of 32.3 mV and a Tafel slope of 30 mV·dec(−1) towards HER in acidic solution. These studies confirm that the formation of surface carbon can increase material stability and conductivity, improving the synergistic relationships between Pt and WC catalysts, leading to an increase of catalytic activity. MDPI 2023-04-14 /pmc/articles/PMC10144476/ /pubmed/37110954 http://dx.doi.org/10.3390/nano13081369 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Liu, Zhiwei Li, Yang Fang, Juan Wan, Qi Investigation of Nanoscale Tungsten Carbide Enhanced Surface Carbon as a Platinum Support for the Hydrogen Evolution Reaction |
title | Investigation of Nanoscale Tungsten Carbide Enhanced Surface Carbon as a Platinum Support for the Hydrogen Evolution Reaction |
title_full | Investigation of Nanoscale Tungsten Carbide Enhanced Surface Carbon as a Platinum Support for the Hydrogen Evolution Reaction |
title_fullStr | Investigation of Nanoscale Tungsten Carbide Enhanced Surface Carbon as a Platinum Support for the Hydrogen Evolution Reaction |
title_full_unstemmed | Investigation of Nanoscale Tungsten Carbide Enhanced Surface Carbon as a Platinum Support for the Hydrogen Evolution Reaction |
title_short | Investigation of Nanoscale Tungsten Carbide Enhanced Surface Carbon as a Platinum Support for the Hydrogen Evolution Reaction |
title_sort | investigation of nanoscale tungsten carbide enhanced surface carbon as a platinum support for the hydrogen evolution reaction |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10144476/ https://www.ncbi.nlm.nih.gov/pubmed/37110954 http://dx.doi.org/10.3390/nano13081369 |
work_keys_str_mv | AT liuzhiwei investigationofnanoscaletungstencarbideenhancedsurfacecarbonasaplatinumsupportforthehydrogenevolutionreaction AT liyang investigationofnanoscaletungstencarbideenhancedsurfacecarbonasaplatinumsupportforthehydrogenevolutionreaction AT fangjuan investigationofnanoscaletungstencarbideenhancedsurfacecarbonasaplatinumsupportforthehydrogenevolutionreaction AT wanqi investigationofnanoscaletungstencarbideenhancedsurfacecarbonasaplatinumsupportforthehydrogenevolutionreaction |