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Mixing, Fast and Slow: Assessing the Efficiency of Electronically Conductive Networks in Hard Carbon Anodes

Anne Sawhney Orcid Logo, Jenny Baker

Coatings, Volume: 13, Issue: 4, Start page: 689

Swansea University Authors: Anne Sawhney Orcid Logo, Jenny Baker

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DOI (Published version): 10.3390/coatings13040689

Abstract

This work aimed to answer fundamental questions about the optimal processing and formulation of hard carbon electrodes typical of those anticipated in commercial sodium-ion cells. Procedurally simple tests were proposed to compare the effects of slurry mixing energy and conductive additives on the m...

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Published in: Coatings
ISSN: 2079-6412
Published: MDPI AG 2023
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URI: https://cronfa.swan.ac.uk/Record/cronfa63039
first_indexed 2023-03-28T12:08:53Z
last_indexed 2024-11-15T18:00:46Z
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spelling 2024-10-18T16:49:23.5514767 v2 63039 2023-03-28 Mixing, Fast and Slow: Assessing the Efficiency of Electronically Conductive Networks in Hard Carbon Anodes 17a538477108587c0abd065ee891f3a3 0000-0003-3242-6789 Anne Sawhney Anne Sawhney true false 6913b56f36f0c8cd34d8c9040d2df460 Jenny Baker Jenny Baker true false 2023-03-28 EAAS This work aimed to answer fundamental questions about the optimal processing and formulation of hard carbon electrodes typical of those anticipated in commercial sodium-ion cells. Procedurally simple tests were proposed to compare the effects of slurry mixing energy and conductive additives on the morphology of and conductive networks in electrodes made with hard carbons from two different manufacturers. Long-range and short-range electronic conductivity was quantified with high repeatability for samples of each hard carbon electrode produced on different days. The most significant changes induced by mixing energy were observed in the electrodes produced without conductive additives, which was found to relate to post-processing particle size. Hard carbon from one source was pulverized by high energy mixing, replacing the electronic effect of conductive additives while increasing pore tortuosity and impedance. These findings recommend evaluating the dry electrode through-resistance as a complement to quantifying pre-cycling impedance to validate mixing protocol and the application of conductive additives in hard carbon electrodes. These procedures can also serve as reliable low-cost methods for quality control at early stages of sodium-ion anode manufacturing. Journal Article Coatings 13 4 689 MDPI AG 2079-6412 Na-ion; contact resistance; impedance modulus; electrode microporosity 28 3 2023 2023-03-28 10.3390/coatings13040689 COLLEGE NANME Engineering and Applied Sciences School COLLEGE CODE EAAS Swansea University External research funder(s) paid the OA fee (includes OA grants disbursed by the Library) EP/S03711X/1 and SPECIFIC Innovation and Knowledge Centre (grant numbers EP/N020863/1 , EP/P030831/1 2024-10-18T16:49:23.5514767 2023-03-28T12:57:51.7039756 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Mechanical Engineering Anne Sawhney 0000-0003-3242-6789 1 Jenny Baker 2 63039__26947__15d16288a728449a971c0ff2cb1e8153.pdf 63039.VOR.pdf 2023-03-28T13:05:42.1583795 Output 6541348 application/pdf Version of Record true Copyright: © 2023 by the authors. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) 4.0 license true eng https://creativecommons.org/licenses/by/4.0/
title Mixing, Fast and Slow: Assessing the Efficiency of Electronically Conductive Networks in Hard Carbon Anodes
spellingShingle Mixing, Fast and Slow: Assessing the Efficiency of Electronically Conductive Networks in Hard Carbon Anodes
Anne Sawhney
Jenny Baker
title_short Mixing, Fast and Slow: Assessing the Efficiency of Electronically Conductive Networks in Hard Carbon Anodes
title_full Mixing, Fast and Slow: Assessing the Efficiency of Electronically Conductive Networks in Hard Carbon Anodes
title_fullStr Mixing, Fast and Slow: Assessing the Efficiency of Electronically Conductive Networks in Hard Carbon Anodes
title_full_unstemmed Mixing, Fast and Slow: Assessing the Efficiency of Electronically Conductive Networks in Hard Carbon Anodes
title_sort Mixing, Fast and Slow: Assessing the Efficiency of Electronically Conductive Networks in Hard Carbon Anodes
author_id_str_mv 17a538477108587c0abd065ee891f3a3
6913b56f36f0c8cd34d8c9040d2df460
author_id_fullname_str_mv 17a538477108587c0abd065ee891f3a3_***_Anne Sawhney
6913b56f36f0c8cd34d8c9040d2df460_***_Jenny Baker
author Anne Sawhney
Jenny Baker
author2 Anne Sawhney
Jenny Baker
format Journal article
container_title Coatings
container_volume 13
container_issue 4
container_start_page 689
publishDate 2023
institution Swansea University
issn 2079-6412
doi_str_mv 10.3390/coatings13040689
publisher MDPI AG
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 Aerospace, Civil, Electrical, General and Mechanical Engineering - Mechanical Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Mechanical Engineering
document_store_str 1
active_str 0
description This work aimed to answer fundamental questions about the optimal processing and formulation of hard carbon electrodes typical of those anticipated in commercial sodium-ion cells. Procedurally simple tests were proposed to compare the effects of slurry mixing energy and conductive additives on the morphology of and conductive networks in electrodes made with hard carbons from two different manufacturers. Long-range and short-range electronic conductivity was quantified with high repeatability for samples of each hard carbon electrode produced on different days. The most significant changes induced by mixing energy were observed in the electrodes produced without conductive additives, which was found to relate to post-processing particle size. Hard carbon from one source was pulverized by high energy mixing, replacing the electronic effect of conductive additives while increasing pore tortuosity and impedance. These findings recommend evaluating the dry electrode through-resistance as a complement to quantifying pre-cycling impedance to validate mixing protocol and the application of conductive additives in hard carbon electrodes. These procedures can also serve as reliable low-cost methods for quality control at early stages of sodium-ion anode manufacturing.
published_date 2023-03-28T05:24:56Z
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score 11.04748

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