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Structure and electrochemical properties of Na2±xV3P2O13 (x = 0 and 1): a promising cathode material for sodium-ion batteries

Anji Munnangi Orcid Logo, Holger Euchner, Raiker Witter, Oliver Clemens

Journal of Materials Chemistry A, Volume: 6, Issue: 16, Pages: 6947 - 6958

Swansea University Author: Anji Munnangi Orcid Logo

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DOI (Published version): 10.1039/c8ta00588e

Abstract

Owing to the large abundance of sodium resources and its low cost, sodium-ion batteries (NIBs) are being considered as a promising, feasible alternative to lithium-ion batteries (LIBs), notably for stationary applications. Research activities on sodium-ion batteries are growing worldwide but do stil...

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Published in: Journal of Materials Chemistry A
ISSN: 2050-7488 2050-7496
Published: Royal Society of Chemistry (RSC) 2018
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URI: https://cronfa.swan.ac.uk/Record/cronfa51584
first_indexed 2019-08-27T15:30:59Z
last_indexed 2019-09-03T14:52:01Z
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spelling 2019-09-03T11:41:29.6556109 v2 51584 2019-08-27 Structure and electrochemical properties of Na2±xV3P2O13 (x = 0 and 1): a promising cathode material for sodium-ion batteries 3ed0b4f2ff4fb9e87c7a73e7a3c39da7 0000-0001-9101-0252 Anji Munnangi Anji Munnangi true false 2019-08-27 EAAS Owing to the large abundance of sodium resources and its low cost, sodium-ion batteries (NIBs) are being considered as a promising, feasible alternative to lithium-ion batteries (LIBs), notably for stationary applications. Research activities on sodium-ion batteries are growing worldwide but do still require a great deal of basic and applied research. The design and synthesis of new cathode materials are of great interest to realize the structural requirements to build sustainable and safe NIBs. Herein, we report the synthesis, structure and electrochemical properties of sodium vanadium oxy-phosphate (NVOP), Na2±xV3P2O13 (x = 0 and 1), a stable host for the reversible insertion of sodium. Na3V3P2O13 delivers a reversible capacity of 132 mA h g−1 at an average potential of 2.7 V vs. Na/Na+, which amounts to a specific energy of 356 W h kg−1. Furthermore, NVOP compounds exhibit excellent cycling stability. Besides, NVOP shows a rich structural chemistry during the sodium insertion and deinsertion process. A reversible switching of V5+ and V4+ between two crystallographic sites during sodiation and desodiation reactions was observed, hitherto unknown in battery materials. Na2±xV3P2O13 (x = 0 and 1) compounds were characterized by various experimental tools to understand the structure and related properties. In addition, density functional theory (DFT) calculations were performed to complement experimental observations and to understand sodium diffusion behavior in Na2±xV3P2O13 (x = 0 and 1). Journal Article Journal of Materials Chemistry A 6 16 6947 6958 Royal Society of Chemistry (RSC) 2050-7488 2050-7496 13 3 2018 2018-03-13 10.1039/c8ta00588e COLLEGE NANME Engineering and Applied Sciences School COLLEGE CODE EAAS Swansea University 2019-09-03T11:41:29.6556109 2019-08-27T12:28:57.6454101 Faculty of Science and Engineering School of Engineering and Applied Sciences - Materials Science and Engineering Anji Munnangi 0000-0001-9101-0252 1 Holger Euchner 2 Raiker Witter 3 Oliver Clemens 4
title Structure and electrochemical properties of Na2±xV3P2O13 (x = 0 and 1): a promising cathode material for sodium-ion batteries
spellingShingle Structure and electrochemical properties of Na2±xV3P2O13 (x = 0 and 1): a promising cathode material for sodium-ion batteries
Anji Munnangi
title_short Structure and electrochemical properties of Na2±xV3P2O13 (x = 0 and 1): a promising cathode material for sodium-ion batteries
title_full Structure and electrochemical properties of Na2±xV3P2O13 (x = 0 and 1): a promising cathode material for sodium-ion batteries
title_fullStr Structure and electrochemical properties of Na2±xV3P2O13 (x = 0 and 1): a promising cathode material for sodium-ion batteries
title_full_unstemmed Structure and electrochemical properties of Na2±xV3P2O13 (x = 0 and 1): a promising cathode material for sodium-ion batteries
title_sort Structure and electrochemical properties of Na2±xV3P2O13 (x = 0 and 1): a promising cathode material for sodium-ion batteries
author_id_str_mv 3ed0b4f2ff4fb9e87c7a73e7a3c39da7
author_id_fullname_str_mv 3ed0b4f2ff4fb9e87c7a73e7a3c39da7_***_Anji Munnangi
author Anji Munnangi
author2 Anji Munnangi
Holger Euchner
Raiker Witter
Oliver Clemens
format Journal article
container_title Journal of Materials Chemistry A
container_volume 6
container_issue 16
container_start_page 6947
publishDate 2018
institution Swansea University
issn 2050-7488
2050-7496
doi_str_mv 10.1039/c8ta00588e
publisher Royal Society of Chemistry (RSC)
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 Owing to the large abundance of sodium resources and its low cost, sodium-ion batteries (NIBs) are being considered as a promising, feasible alternative to lithium-ion batteries (LIBs), notably for stationary applications. Research activities on sodium-ion batteries are growing worldwide but do still require a great deal of basic and applied research. The design and synthesis of new cathode materials are of great interest to realize the structural requirements to build sustainable and safe NIBs. Herein, we report the synthesis, structure and electrochemical properties of sodium vanadium oxy-phosphate (NVOP), Na2±xV3P2O13 (x = 0 and 1), a stable host for the reversible insertion of sodium. Na3V3P2O13 delivers a reversible capacity of 132 mA h g−1 at an average potential of 2.7 V vs. Na/Na+, which amounts to a specific energy of 356 W h kg−1. Furthermore, NVOP compounds exhibit excellent cycling stability. Besides, NVOP shows a rich structural chemistry during the sodium insertion and deinsertion process. A reversible switching of V5+ and V4+ between two crystallographic sites during sodiation and desodiation reactions was observed, hitherto unknown in battery materials. Na2±xV3P2O13 (x = 0 and 1) compounds were characterized by various experimental tools to understand the structure and related properties. In addition, density functional theory (DFT) calculations were performed to complement experimental observations and to understand sodium diffusion behavior in Na2±xV3P2O13 (x = 0 and 1).
published_date 2018-03-13T02:05:04Z
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score 11.048042

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