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Electrochemical synthesis of carbon-metal fluoride nanocomposites as cathode materials for lithium batteries

M. Helen, Maximilian Fichtner, Anji Munnangi Orcid Logo

Electrochemistry Communications, Volume: 120, Start page: 106846

Swansea University Author: Anji Munnangi Orcid Logo

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Abstract

Herein we have demonstrated an electrochemical method for the synthesis of carbon-metal fluoride nanocomposites (CMNFCs). Electrochemical intercalation of transition metal ions into graphite fluoride (CFx) resulted in the formation of CMNFCs. As a proof-of-concept, we have synthesized C-FeF2 and C-N...

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Published in: Electrochemistry Communications
ISSN: 1388-2481
Published: Elsevier BV 2020
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URI: https://cronfa.swan.ac.uk/Record/cronfa55323
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spelling 2020-11-30T14:15:01.7337204 v2 55323 2020-10-05 Electrochemical synthesis of carbon-metal fluoride nanocomposites as cathode materials for lithium batteries 3ed0b4f2ff4fb9e87c7a73e7a3c39da7 0000-0001-9101-0252 Anji Munnangi Anji Munnangi true false 2020-10-05 MTLS Herein we have demonstrated an electrochemical method for the synthesis of carbon-metal fluoride nanocomposites (CMNFCs). Electrochemical intercalation of transition metal ions into graphite fluoride (CFx) resulted in the formation of CMNFCs. As a proof-of-concept, we have synthesized C-FeF2 and C-NiF2 nanocomposites by the electrochemical intercalation of Fe2+ and Ni2+ into CFx from corresponding non-aqueous electrolytes. The C-FeF2 and C-NiF2 nanocomposites synthesized by this method showed high reversible capacity and cycling stability compared to chemically synthesized analogs as cathode materials for lithium batteries. The reversible capacity of chemically synthesized C-FeF2 is 181 mAh g-1, whereas electrochemically synthesized material is 349 mAh g-1 after 20 cycles. The better cycling performance of electrochemically synthesized C-FeF2 was attributed to the homogeneous distribution of FeF2 nanoparticles within the carbon matrix enabled by the electrochemical intercalation of Fe2+. The electrochemical method described here is emission-free, cost-effective, occurs at room temperature, and extendable to the synthesis of several other CMFNCs. Moreover, it might provide new avenues for the synthesis of advanced functional materials. Journal Article Electrochemistry Communications 120 106846 Elsevier BV 1388-2481 CFx, metal fluorides, C-FeF2 and C-NiF2, lithium batteries 1 11 2020 2020-11-01 10.1016/j.elecom.2020.106846 COLLEGE NANME Materials Science and Engineering COLLEGE CODE MTLS Swansea University 2020-11-30T14:15:01.7337204 2020-10-05T12:17:18.1435344 Faculty of Science and Engineering School of Engineering and Applied Sciences - Materials Science and Engineering M. Helen 1 Maximilian Fichtner 2 Anji Munnangi 0000-0001-9101-0252 3 55323__18434__1418d548377e44f29b7fc85bc2d53c5a.pdf 55323 (2).pdf 2020-10-16T16:41:10.4933284 Output 4664433 application/pdf Version of Record true © 2020 The Authors. This is an open access article under the CC BY-NC-ND license true eng http://creativecommons.org/licenses/BY-NC-ND/4.0/
title Electrochemical synthesis of carbon-metal fluoride nanocomposites as cathode materials for lithium batteries
spellingShingle Electrochemical synthesis of carbon-metal fluoride nanocomposites as cathode materials for lithium batteries
Anji Munnangi
title_short Electrochemical synthesis of carbon-metal fluoride nanocomposites as cathode materials for lithium batteries
title_full Electrochemical synthesis of carbon-metal fluoride nanocomposites as cathode materials for lithium batteries
title_fullStr Electrochemical synthesis of carbon-metal fluoride nanocomposites as cathode materials for lithium batteries
title_full_unstemmed Electrochemical synthesis of carbon-metal fluoride nanocomposites as cathode materials for lithium batteries
title_sort Electrochemical synthesis of carbon-metal fluoride nanocomposites as cathode materials for lithium batteries
author_id_str_mv 3ed0b4f2ff4fb9e87c7a73e7a3c39da7
author_id_fullname_str_mv 3ed0b4f2ff4fb9e87c7a73e7a3c39da7_***_Anji Munnangi
author Anji Munnangi
author2 M. Helen
Maximilian Fichtner
Anji Munnangi
format Journal article
container_title Electrochemistry Communications
container_volume 120
container_start_page 106846
publishDate 2020
institution Swansea University
issn 1388-2481
doi_str_mv 10.1016/j.elecom.2020.106846
publisher Elsevier BV
college_str Faculty of Science and Engineering
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hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Engineering and Applied Sciences - Materials Science and Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Materials Science and Engineering
document_store_str 1
active_str 0
description Herein we have demonstrated an electrochemical method for the synthesis of carbon-metal fluoride nanocomposites (CMNFCs). Electrochemical intercalation of transition metal ions into graphite fluoride (CFx) resulted in the formation of CMNFCs. As a proof-of-concept, we have synthesized C-FeF2 and C-NiF2 nanocomposites by the electrochemical intercalation of Fe2+ and Ni2+ into CFx from corresponding non-aqueous electrolytes. The C-FeF2 and C-NiF2 nanocomposites synthesized by this method showed high reversible capacity and cycling stability compared to chemically synthesized analogs as cathode materials for lithium batteries. The reversible capacity of chemically synthesized C-FeF2 is 181 mAh g-1, whereas electrochemically synthesized material is 349 mAh g-1 after 20 cycles. The better cycling performance of electrochemically synthesized C-FeF2 was attributed to the homogeneous distribution of FeF2 nanoparticles within the carbon matrix enabled by the electrochemical intercalation of Fe2+. The electrochemical method described here is emission-free, cost-effective, occurs at room temperature, and extendable to the synthesis of several other CMFNCs. Moreover, it might provide new avenues for the synthesis of advanced functional materials.
published_date 2020-11-01T04:07:26Z
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