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Three-Dimensional Printed MoS(2)/Graphene Aerogel Electrodes for Hydrogen Evolution Reactions
[Image: see text] In this work, we demonstrate the use of direct ink writing (DIW) technology to create 3D catalytic electrodes for electrochemical applications. Hybrid MoS(2)/graphene aerogels are made by mixing commercially available MoS(2) and graphene oxide powders into a thixotropic, high conce...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2022
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9928410/ https://www.ncbi.nlm.nih.gov/pubmed/36855624 http://dx.doi.org/10.1021/acsmaterialsau.2c00014 |
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author | Chandrasekaran, Swetha Feaster, Jeremy Ynzunza, Jenna Li, Frances Wang, Xueqiao Nelson, Art J. Worsley, Marcus A. |
author_facet | Chandrasekaran, Swetha Feaster, Jeremy Ynzunza, Jenna Li, Frances Wang, Xueqiao Nelson, Art J. Worsley, Marcus A. |
author_sort | Chandrasekaran, Swetha |
collection | PubMed |
description | [Image: see text] In this work, we demonstrate the use of direct ink writing (DIW) technology to create 3D catalytic electrodes for electrochemical applications. Hybrid MoS(2)/graphene aerogels are made by mixing commercially available MoS(2) and graphene oxide powders into a thixotropic, high concentration, viscous ink. A porous 3D structure of 2D graphene sheets and MoS(2) particles was created after post treatment by freeze-drying and reducing graphene oxide through annealing. The composition and morphology of the samples were fully characterized through XPS, BET, and SEM/EDS. The resulting 3D printed MoS(2)/graphene aerogel electrodes had a remarkable electrochemically active surface area (>1700 cm(2)) and were able to achieve currents over 100 mA in acidic media. Notably, the catalytic activity of the MoS(2)/graphene aerogel electrodes was maintained with minimal loss in surface area compared to the non-3D printed electrodes, suggesting that DIW can be a viable method of producing durable electrodes with a high surface area for water splitting. This demonstrates that 3D printing a MoS(2)/graphene 3D porous network directly using our approach not only improves electrolyte dispersion and facilitates catalyst utilization but also provides multidimensional electron transport channels for improving electronic conductivity. |
format | Online Article Text |
id | pubmed-9928410 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-99284102023-02-27 Three-Dimensional Printed MoS(2)/Graphene Aerogel Electrodes for Hydrogen Evolution Reactions Chandrasekaran, Swetha Feaster, Jeremy Ynzunza, Jenna Li, Frances Wang, Xueqiao Nelson, Art J. Worsley, Marcus A. ACS Mater Au [Image: see text] In this work, we demonstrate the use of direct ink writing (DIW) technology to create 3D catalytic electrodes for electrochemical applications. Hybrid MoS(2)/graphene aerogels are made by mixing commercially available MoS(2) and graphene oxide powders into a thixotropic, high concentration, viscous ink. A porous 3D structure of 2D graphene sheets and MoS(2) particles was created after post treatment by freeze-drying and reducing graphene oxide through annealing. The composition and morphology of the samples were fully characterized through XPS, BET, and SEM/EDS. The resulting 3D printed MoS(2)/graphene aerogel electrodes had a remarkable electrochemically active surface area (>1700 cm(2)) and were able to achieve currents over 100 mA in acidic media. Notably, the catalytic activity of the MoS(2)/graphene aerogel electrodes was maintained with minimal loss in surface area compared to the non-3D printed electrodes, suggesting that DIW can be a viable method of producing durable electrodes with a high surface area for water splitting. This demonstrates that 3D printing a MoS(2)/graphene 3D porous network directly using our approach not only improves electrolyte dispersion and facilitates catalyst utilization but also provides multidimensional electron transport channels for improving electronic conductivity. American Chemical Society 2022-05-05 /pmc/articles/PMC9928410/ /pubmed/36855624 http://dx.doi.org/10.1021/acsmaterialsau.2c00014 Text en © 2022 The Authors. Published by American Chemical Society https://creativecommons.org/licenses/by-nc-nd/4.0/Permits non-commercial access and re-use, provided that author attribution and integrity are maintained; but does not permit creation of adaptations or other derivative works (https://creativecommons.org/licenses/by-nc-nd/4.0/). |
spellingShingle | Chandrasekaran, Swetha Feaster, Jeremy Ynzunza, Jenna Li, Frances Wang, Xueqiao Nelson, Art J. Worsley, Marcus A. Three-Dimensional Printed MoS(2)/Graphene Aerogel Electrodes for Hydrogen Evolution Reactions |
title | Three-Dimensional Printed MoS(2)/Graphene
Aerogel Electrodes for Hydrogen Evolution Reactions |
title_full | Three-Dimensional Printed MoS(2)/Graphene
Aerogel Electrodes for Hydrogen Evolution Reactions |
title_fullStr | Three-Dimensional Printed MoS(2)/Graphene
Aerogel Electrodes for Hydrogen Evolution Reactions |
title_full_unstemmed | Three-Dimensional Printed MoS(2)/Graphene
Aerogel Electrodes for Hydrogen Evolution Reactions |
title_short | Three-Dimensional Printed MoS(2)/Graphene
Aerogel Electrodes for Hydrogen Evolution Reactions |
title_sort | three-dimensional printed mos(2)/graphene
aerogel electrodes for hydrogen evolution reactions |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9928410/ https://www.ncbi.nlm.nih.gov/pubmed/36855624 http://dx.doi.org/10.1021/acsmaterialsau.2c00014 |
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