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One-pot coating of LiCoPO(4)/C by a UiO-66 metal–organic framework

LiCoPO(4) (LCP) is a promising high voltage cathode material but suffers from low conductivity and poor electrochemical properties. These properties can be improved by coating with a conductive carbon layer. Ongoing research is focused on the protective layer with good adhesion and inhibition of ele...

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Autores principales: Aboraia, Abdelaziz M., Shapovalov, Viktor V., Guda, Alexnader A., Butova, Vera V., Soldatov, Alexander
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9056873/
https://www.ncbi.nlm.nih.gov/pubmed/35515686
http://dx.doi.org/10.1039/d0ra05706a
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author Aboraia, Abdelaziz M.
Shapovalov, Viktor V.
Guda, Alexnader A.
Butova, Vera V.
Soldatov, Alexander
author_facet Aboraia, Abdelaziz M.
Shapovalov, Viktor V.
Guda, Alexnader A.
Butova, Vera V.
Soldatov, Alexander
author_sort Aboraia, Abdelaziz M.
collection PubMed
description LiCoPO(4) (LCP) is a promising high voltage cathode material but suffers from low conductivity and poor electrochemical properties. These properties can be improved by coating with a conductive carbon layer. Ongoing research is focused on the protective layer with good adhesion and inhibition of electrolyte decomposition reactions. In the present work, we suggest a new robust one-pot procedure, featuring the introduction of UiO-66 metal–organic framework (MOF) nanoparticles during LCP synthesis to create a metal–carbon layer upon annealing. The LiCoPO(4)/C@UiO-66 was synthesized via the microwave-assisted solvothermal route, and 147 mA h g(−1) discharge capacity was obtained in the first cycle. The MOF acts as a source of both carbon and metal atoms, which improves conductivity. Using operando X-ray absorption spectroscopy upon cycling, we identify two Co-related phases in the sample and exclude the olivine structure degradation as an explanation for a long-term capacity fade.
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spelling pubmed-90568732022-05-04 One-pot coating of LiCoPO(4)/C by a UiO-66 metal–organic framework Aboraia, Abdelaziz M. Shapovalov, Viktor V. Guda, Alexnader A. Butova, Vera V. Soldatov, Alexander RSC Adv Chemistry LiCoPO(4) (LCP) is a promising high voltage cathode material but suffers from low conductivity and poor electrochemical properties. These properties can be improved by coating with a conductive carbon layer. Ongoing research is focused on the protective layer with good adhesion and inhibition of electrolyte decomposition reactions. In the present work, we suggest a new robust one-pot procedure, featuring the introduction of UiO-66 metal–organic framework (MOF) nanoparticles during LCP synthesis to create a metal–carbon layer upon annealing. The LiCoPO(4)/C@UiO-66 was synthesized via the microwave-assisted solvothermal route, and 147 mA h g(−1) discharge capacity was obtained in the first cycle. The MOF acts as a source of both carbon and metal atoms, which improves conductivity. Using operando X-ray absorption spectroscopy upon cycling, we identify two Co-related phases in the sample and exclude the olivine structure degradation as an explanation for a long-term capacity fade. The Royal Society of Chemistry 2020-09-23 /pmc/articles/PMC9056873/ /pubmed/35515686 http://dx.doi.org/10.1039/d0ra05706a Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Aboraia, Abdelaziz M.
Shapovalov, Viktor V.
Guda, Alexnader A.
Butova, Vera V.
Soldatov, Alexander
One-pot coating of LiCoPO(4)/C by a UiO-66 metal–organic framework
title One-pot coating of LiCoPO(4)/C by a UiO-66 metal–organic framework
title_full One-pot coating of LiCoPO(4)/C by a UiO-66 metal–organic framework
title_fullStr One-pot coating of LiCoPO(4)/C by a UiO-66 metal–organic framework
title_full_unstemmed One-pot coating of LiCoPO(4)/C by a UiO-66 metal–organic framework
title_short One-pot coating of LiCoPO(4)/C by a UiO-66 metal–organic framework
title_sort one-pot coating of licopo(4)/c by a uio-66 metal–organic framework
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9056873/
https://www.ncbi.nlm.nih.gov/pubmed/35515686
http://dx.doi.org/10.1039/d0ra05706a
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