Synthesis and Characterization of 3-DOM IrO(2) Electrocatalysts Templated by PMMA for Oxygen Evolution Reaction

Three-dimensional ordered macroporous (3-DOM) IrO(2) material was prepared using PMMA as a template and ammonia as a chelator. These 3-DOM IrO(2) honeycomb arrays showed a large surface area and ordered macropores (155 nm in diameter) cross-linked by secondary mesopores. Internal structures of 3-DOM...

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Autores principales: Liu, Fei, Sun, Xuechu, Chen, Xiu, Li, Cuicui, Yu, Jun, Tang, Haolin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6523800/
https://www.ncbi.nlm.nih.gov/pubmed/30960613
http://dx.doi.org/10.3390/polym11040629
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author Liu, Fei
Sun, Xuechu
Chen, Xiu
Li, Cuicui
Yu, Jun
Tang, Haolin
author_facet Liu, Fei
Sun, Xuechu
Chen, Xiu
Li, Cuicui
Yu, Jun
Tang, Haolin
author_sort Liu, Fei
collection PubMed
description Three-dimensional ordered macroporous (3-DOM) IrO(2) material was prepared using PMMA as a template and ammonia as a chelator. These 3-DOM IrO(2) honeycomb arrays showed a large surface area and ordered macropores (155 nm in diameter) cross-linked by secondary mesopores. Internal structures of 3-DOM IrO(2) material were observed microscopically through these secondary pores. According to the X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) spectra, 3-DOM IrO(2) has a rutile crystal structure and is mainly composed of iridium dioxide. In acidic electrolytes, the overpotential of 3-DOM IrO(2) material at 0.5 mV cm(−2) was only 0.22 V. Accelerated durability tests demonstrated excellent durability of 3-DOM IrO(2) as an oxygen evolution reaction (OER) catalyst.
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spelling pubmed-65238002019-06-03 Synthesis and Characterization of 3-DOM IrO(2) Electrocatalysts Templated by PMMA for Oxygen Evolution Reaction Liu, Fei Sun, Xuechu Chen, Xiu Li, Cuicui Yu, Jun Tang, Haolin Polymers (Basel) Article Three-dimensional ordered macroporous (3-DOM) IrO(2) material was prepared using PMMA as a template and ammonia as a chelator. These 3-DOM IrO(2) honeycomb arrays showed a large surface area and ordered macropores (155 nm in diameter) cross-linked by secondary mesopores. Internal structures of 3-DOM IrO(2) material were observed microscopically through these secondary pores. According to the X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) spectra, 3-DOM IrO(2) has a rutile crystal structure and is mainly composed of iridium dioxide. In acidic electrolytes, the overpotential of 3-DOM IrO(2) material at 0.5 mV cm(−2) was only 0.22 V. Accelerated durability tests demonstrated excellent durability of 3-DOM IrO(2) as an oxygen evolution reaction (OER) catalyst. MDPI 2019-04-04 /pmc/articles/PMC6523800/ /pubmed/30960613 http://dx.doi.org/10.3390/polym11040629 Text en © 2019 by the authors. 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 (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Liu, Fei
Sun, Xuechu
Chen, Xiu
Li, Cuicui
Yu, Jun
Tang, Haolin
Synthesis and Characterization of 3-DOM IrO(2) Electrocatalysts Templated by PMMA for Oxygen Evolution Reaction
title Synthesis and Characterization of 3-DOM IrO(2) Electrocatalysts Templated by PMMA for Oxygen Evolution Reaction
title_full Synthesis and Characterization of 3-DOM IrO(2) Electrocatalysts Templated by PMMA for Oxygen Evolution Reaction
title_fullStr Synthesis and Characterization of 3-DOM IrO(2) Electrocatalysts Templated by PMMA for Oxygen Evolution Reaction
title_full_unstemmed Synthesis and Characterization of 3-DOM IrO(2) Electrocatalysts Templated by PMMA for Oxygen Evolution Reaction
title_short Synthesis and Characterization of 3-DOM IrO(2) Electrocatalysts Templated by PMMA for Oxygen Evolution Reaction
title_sort synthesis and characterization of 3-dom iro(2) electrocatalysts templated by pmma for oxygen evolution reaction
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6523800/
https://www.ncbi.nlm.nih.gov/pubmed/30960613
http://dx.doi.org/10.3390/polym11040629
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