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Insight into Sodium Insertion and the Storage Mechanism in Hard Carbon

Anji Munnangi Orcid Logo, M. Helen, Axel Groß, Maximilian Fichtner, Holger Euchner

ACS Energy Letters, Volume: 3, Issue: 12, Pages: 2851 - 2857

Swansea University Author: Anji Munnangi Orcid Logo

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DOI (Published version): 10.1021/acsenergylett.8b01761

Abstract

While the technological importance of carbon-based anodes for sodium-ion batteries is undebated, the underlying mechanism for sodium insertion and storage is still strongly disputed. Here, we present a joint experimental and theoretical study that allows us to provide detailed insights into the proc...

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Published in: ACS Energy Letters
ISSN: 2380-8195 2380-8195
Published: American Chemical Society (ACS) 2018
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URI: https://cronfa.swan.ac.uk/Record/cronfa51565
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first_indexed 2019-08-27T15:30:56Z
last_indexed 2021-09-25T03:11:32Z
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spelling 2021-09-24T14:37:00.3532598 v2 51565 2019-08-27 Insight into Sodium Insertion and the Storage Mechanism in Hard Carbon 3ed0b4f2ff4fb9e87c7a73e7a3c39da7 0000-0001-9101-0252 Anji Munnangi Anji Munnangi true false 2019-08-27 MTLS While the technological importance of carbon-based anodes for sodium-ion batteries is undebated, the underlying mechanism for sodium insertion and storage is still strongly disputed. Here, we present a joint experimental and theoretical study that allows us to provide detailed insights into the process of Na insertion in nongraphitizable (hard) carbon. For this purpose, we combine data from in situ Raman scattering of Na insertion in hard carbon with density functional theory-based lattice dynamics and band structure calculations for Na insertion in graphitic model structures used for a local description of graphitic domains in hard carbon. The agreement of experimental results and computational findings yields a clear picture of the Na insertion mechanism, which can be described by four different stages that are dominated by surface morphology, defect concentration, bulk structure, and nanoporosity. On the basis of the resulting model for sodium insertion, we suggest design strategies to maximize the capacity of hard carbon. Journal Article ACS Energy Letters 3 12 2851 2857 American Chemical Society (ACS) 2380-8195 2380-8195 14 12 2018 2018-12-14 10.1021/acsenergylett.8b01761 COLLEGE NANME Materials Science and Engineering COLLEGE CODE MTLS Swansea University 2021-09-24T14:37:00.3532598 2019-08-27T12:15:38.0895798 Faculty of Science and Engineering School of Engineering and Applied Sciences - Materials Science and Engineering Anji Munnangi 0000-0001-9101-0252 1 M. Helen 2 Axel Groß 3 Maximilian Fichtner 4 Holger Euchner 5
title Insight into Sodium Insertion and the Storage Mechanism in Hard Carbon
spellingShingle Insight into Sodium Insertion and the Storage Mechanism in Hard Carbon
Anji Munnangi
title_short Insight into Sodium Insertion and the Storage Mechanism in Hard Carbon
title_full Insight into Sodium Insertion and the Storage Mechanism in Hard Carbon
title_fullStr Insight into Sodium Insertion and the Storage Mechanism in Hard Carbon
title_full_unstemmed Insight into Sodium Insertion and the Storage Mechanism in Hard Carbon
title_sort Insight into Sodium Insertion and the Storage Mechanism in Hard Carbon
author_id_str_mv 3ed0b4f2ff4fb9e87c7a73e7a3c39da7
author_id_fullname_str_mv 3ed0b4f2ff4fb9e87c7a73e7a3c39da7_***_Anji Munnangi
author Anji Munnangi
author2 Anji Munnangi
M. Helen
Axel Groß
Maximilian Fichtner
Holger Euchner
format Journal article
container_title ACS Energy Letters
container_volume 3
container_issue 12
container_start_page 2851
publishDate 2018
institution Swansea University
issn 2380-8195
2380-8195
doi_str_mv 10.1021/acsenergylett.8b01761
publisher American Chemical Society (ACS)
college_str Faculty of Science and Engineering
hierarchytype
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 0
active_str 0
description While the technological importance of carbon-based anodes for sodium-ion batteries is undebated, the underlying mechanism for sodium insertion and storage is still strongly disputed. Here, we present a joint experimental and theoretical study that allows us to provide detailed insights into the process of Na insertion in nongraphitizable (hard) carbon. For this purpose, we combine data from in situ Raman scattering of Na insertion in hard carbon with density functional theory-based lattice dynamics and band structure calculations for Na insertion in graphitic model structures used for a local description of graphitic domains in hard carbon. The agreement of experimental results and computational findings yields a clear picture of the Na insertion mechanism, which can be described by four different stages that are dominated by surface morphology, defect concentration, bulk structure, and nanoporosity. On the basis of the resulting model for sodium insertion, we suggest design strategies to maximize the capacity of hard carbon.
published_date 2018-12-14T04:03:29Z
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score 11.036553

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