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Composite Mn–Co electrode materials for supercapacitors: why the precursor's morphology matters!
In the energy storage field, an electrode material must possess both good ionic and electronic conductivities to perform well, especially when high power is needed. In this context, the development of composite electrode materials combining an electrochemically active and good ionic conductor phase...
Autores principales: | , , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
RSC
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9680945/ https://www.ncbi.nlm.nih.gov/pubmed/36504748 http://dx.doi.org/10.1039/d2na00616b |
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author | Invernizzi, Ronan Lemoine, Alexia Madec, Lénaïc Weill, François Dourges, Marie-Anne Tang, Céline Giaume, Domitille Baraille, Isabelle Taberna, Pierre Louis Flahaut, Delphine Olchowka, Jacob Guerlou-Demourgues, Liliane |
author_facet | Invernizzi, Ronan Lemoine, Alexia Madec, Lénaïc Weill, François Dourges, Marie-Anne Tang, Céline Giaume, Domitille Baraille, Isabelle Taberna, Pierre Louis Flahaut, Delphine Olchowka, Jacob Guerlou-Demourgues, Liliane |
author_sort | Invernizzi, Ronan |
collection | PubMed |
description | In the energy storage field, an electrode material must possess both good ionic and electronic conductivities to perform well, especially when high power is needed. In this context, the development of composite electrode materials combining an electrochemically active and good ionic conductor phase with an electronic conductor appears as a perfectly adapted approach to generate a synergetic effect and optimize the energy storage performance. In this work, three layered MnO(2) phases with various morphologies (veils, nanoplatelets and microplatelets) were combined with electronic conductor cobalt oxyhydroxides with different platelet sizes (∼20 nm vs. 70 nm wide), to synthesize 6 different composites by exfoliation and restacking processes. The influence of precursors' morphology on the distribution of the Mn and Co objects within the composites was carefully investigated and correlated with the electrochemical performance of the final restacked material. Overall, the best performing restacked composite was obtained by combining MnO(2) possessing a veil morphology with the smallest cobalt oxyhydroxide nanoplatelets, leading to the most homogeneous distribution of the Mn and Co objects at the nanoscale. More generally, the aim of this work is to understand how the size and morphology of the precursor building blocks influence their distribution homogeneity within the final composite and to find the most compatible building blocks to reach a homogeneous distribution at the nanoscale. |
format | Online Article Text |
id | pubmed-9680945 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | RSC |
record_format | MEDLINE/PubMed |
spelling | pubmed-96809452022-12-08 Composite Mn–Co electrode materials for supercapacitors: why the precursor's morphology matters! Invernizzi, Ronan Lemoine, Alexia Madec, Lénaïc Weill, François Dourges, Marie-Anne Tang, Céline Giaume, Domitille Baraille, Isabelle Taberna, Pierre Louis Flahaut, Delphine Olchowka, Jacob Guerlou-Demourgues, Liliane Nanoscale Adv Chemistry In the energy storage field, an electrode material must possess both good ionic and electronic conductivities to perform well, especially when high power is needed. In this context, the development of composite electrode materials combining an electrochemically active and good ionic conductor phase with an electronic conductor appears as a perfectly adapted approach to generate a synergetic effect and optimize the energy storage performance. In this work, three layered MnO(2) phases with various morphologies (veils, nanoplatelets and microplatelets) were combined with electronic conductor cobalt oxyhydroxides with different platelet sizes (∼20 nm vs. 70 nm wide), to synthesize 6 different composites by exfoliation and restacking processes. The influence of precursors' morphology on the distribution of the Mn and Co objects within the composites was carefully investigated and correlated with the electrochemical performance of the final restacked material. Overall, the best performing restacked composite was obtained by combining MnO(2) possessing a veil morphology with the smallest cobalt oxyhydroxide nanoplatelets, leading to the most homogeneous distribution of the Mn and Co objects at the nanoscale. More generally, the aim of this work is to understand how the size and morphology of the precursor building blocks influence their distribution homogeneity within the final composite and to find the most compatible building blocks to reach a homogeneous distribution at the nanoscale. RSC 2022-10-07 /pmc/articles/PMC9680945/ /pubmed/36504748 http://dx.doi.org/10.1039/d2na00616b Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/ |
spellingShingle | Chemistry Invernizzi, Ronan Lemoine, Alexia Madec, Lénaïc Weill, François Dourges, Marie-Anne Tang, Céline Giaume, Domitille Baraille, Isabelle Taberna, Pierre Louis Flahaut, Delphine Olchowka, Jacob Guerlou-Demourgues, Liliane Composite Mn–Co electrode materials for supercapacitors: why the precursor's morphology matters! |
title | Composite Mn–Co electrode materials for supercapacitors: why the precursor's morphology matters! |
title_full | Composite Mn–Co electrode materials for supercapacitors: why the precursor's morphology matters! |
title_fullStr | Composite Mn–Co electrode materials for supercapacitors: why the precursor's morphology matters! |
title_full_unstemmed | Composite Mn–Co electrode materials for supercapacitors: why the precursor's morphology matters! |
title_short | Composite Mn–Co electrode materials for supercapacitors: why the precursor's morphology matters! |
title_sort | composite mn–co electrode materials for supercapacitors: why the precursor's morphology matters! |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9680945/ https://www.ncbi.nlm.nih.gov/pubmed/36504748 http://dx.doi.org/10.1039/d2na00616b |
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