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Metal–organic framework–derived Ni@C and NiO@C as anode catalysts for urea fuel cells
Highly porous self-assembled nanostructured Ni@C and NiO@C were synthesized via calcination of a Ni-based metal–organic framework. The morphology, structure, and composition of as synthesized Ni@C and NiO@C were characterized by SEM, FIB-SEM, TEM, and XRD. The electro-catalytic activity of the Ni@C...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6959365/ https://www.ncbi.nlm.nih.gov/pubmed/31937844 http://dx.doi.org/10.1038/s41598-019-57139-7 |
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author | Tran, Thao Quynh Ngan Park, Bang Ju Yun, Woo Hyun Duong, Tien Nhac Yoon, Hyon Hee |
author_facet | Tran, Thao Quynh Ngan Park, Bang Ju Yun, Woo Hyun Duong, Tien Nhac Yoon, Hyon Hee |
author_sort | Tran, Thao Quynh Ngan |
collection | PubMed |
description | Highly porous self-assembled nanostructured Ni@C and NiO@C were synthesized via calcination of a Ni-based metal–organic framework. The morphology, structure, and composition of as synthesized Ni@C and NiO@C were characterized by SEM, FIB-SEM, TEM, and XRD. The electro-catalytic activity of the Ni@C and NiO@C catalysts towards urea oxidation was investigated using cyclic voltammetry. It was found that the Ni@C had a higher residual carbon content and a higher specific surface area than NiO@C, thus exhibiting an enhanced electrochemical performance for urea oxidation. A direct urea fuel cell with Ni@C as an anode catalyst featured an excellent maximum power density of 13.8 mW cm(−2) with 0.33 M urea solution in 1 M KOH as fuel and humidified air as oxidant at 50 °C, additionally showing excellent stability during continuous 20-h operation. Thus, this work showed that the highly porous carbon-supported Ni catalysts derived from Ni-based metal–organic framework can be used for urea oxidation and as an efficient anode material for urea fuel cells. |
format | Online Article Text |
id | pubmed-6959365 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-69593652020-01-17 Metal–organic framework–derived Ni@C and NiO@C as anode catalysts for urea fuel cells Tran, Thao Quynh Ngan Park, Bang Ju Yun, Woo Hyun Duong, Tien Nhac Yoon, Hyon Hee Sci Rep Article Highly porous self-assembled nanostructured Ni@C and NiO@C were synthesized via calcination of a Ni-based metal–organic framework. The morphology, structure, and composition of as synthesized Ni@C and NiO@C were characterized by SEM, FIB-SEM, TEM, and XRD. The electro-catalytic activity of the Ni@C and NiO@C catalysts towards urea oxidation was investigated using cyclic voltammetry. It was found that the Ni@C had a higher residual carbon content and a higher specific surface area than NiO@C, thus exhibiting an enhanced electrochemical performance for urea oxidation. A direct urea fuel cell with Ni@C as an anode catalyst featured an excellent maximum power density of 13.8 mW cm(−2) with 0.33 M urea solution in 1 M KOH as fuel and humidified air as oxidant at 50 °C, additionally showing excellent stability during continuous 20-h operation. Thus, this work showed that the highly porous carbon-supported Ni catalysts derived from Ni-based metal–organic framework can be used for urea oxidation and as an efficient anode material for urea fuel cells. Nature Publishing Group UK 2020-01-14 /pmc/articles/PMC6959365/ /pubmed/31937844 http://dx.doi.org/10.1038/s41598-019-57139-7 Text en © The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Article Tran, Thao Quynh Ngan Park, Bang Ju Yun, Woo Hyun Duong, Tien Nhac Yoon, Hyon Hee Metal–organic framework–derived Ni@C and NiO@C as anode catalysts for urea fuel cells |
title | Metal–organic framework–derived Ni@C and NiO@C as anode catalysts for urea fuel cells |
title_full | Metal–organic framework–derived Ni@C and NiO@C as anode catalysts for urea fuel cells |
title_fullStr | Metal–organic framework–derived Ni@C and NiO@C as anode catalysts for urea fuel cells |
title_full_unstemmed | Metal–organic framework–derived Ni@C and NiO@C as anode catalysts for urea fuel cells |
title_short | Metal–organic framework–derived Ni@C and NiO@C as anode catalysts for urea fuel cells |
title_sort | metal–organic framework–derived ni@c and nio@c as anode catalysts for urea fuel cells |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6959365/ https://www.ncbi.nlm.nih.gov/pubmed/31937844 http://dx.doi.org/10.1038/s41598-019-57139-7 |
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