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Influence of electrode processing and electrolyte composition on multiwall carbon nanotube negative electrodes for sodium ion batteries

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Fuente_Cuesta_2023_JPE_Influence_electrode_CC.pdf (5.933Mb)
Date
02/02/2023
Author
Fuente Cuesta, Aida
Dickson, Stewart A M
Naden, Aaron B
Lonsdale, Cameron
Irvine, John T S
Funder
EPSRC
The Faraday Institution
EPSRC
EPSRC
EPSRC
Grant ID
ep/l017008/1
EP/T005602/1
ep/l017008/1
EP/T019298/1
EP/R023751/1
Keywords
Sodium-ion batteries
Carbon nanotubes
Negative electrodes
Binders
Electrolytes
DAS
MCP
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Abstract
Nanostructured one-dimensional multiwall-carbon nanotubes have a variety of advantageous properties including good electrical conductivity and mechanical strength, and thus have been widely investigated for use in lithium-ion battery electrodes as conductive and microstructural additives, though also possess some electrochemical activity. Their application to sodium-ion batteries has been less extensively researched, and therefore a greater understanding of the electrochemical reaction with sodium, and effects of slurry composition and electrolyte formulation is warranted. Here, we report the fabrication of aqueous and organic multi-wall carbon nanotube negative electrodes processed by ball milling. The binder of choice is noted to greatly affect the electrochemical performance, both in terms of capacity retention and rate capability over a range of current densities from 25 to 500 mA g-1. Switching from a carbonate- to diglyme-based electrolyte considerably improves initial coulombic efficiencies (~10 to 60%), attributed to less extensive formation of solid electrolyte interphase, and enables a reversible mechanism with capacities up to 150 mAh g-1 over 100 cycles depending upon the binder used.
Citation
Fuente Cuesta , A , Dickson , S A M , Naden , A B , Lonsdale , C & Irvine , J T S 2023 , ' Influence of electrode processing and electrolyte composition on multiwall carbon nanotube negative electrodes for sodium ion batteries ' , Journal of Physics: Energy , vol. 5 , 015004 . https://doi.org/10.1088/2515-7655/acb3fc
Publication
Journal of Physics: Energy
Status
Peer reviewed
DOI
https://doi.org/10.1088/2515-7655/acb3fc
ISSN
2515-7655
Type
Journal article
Rights
Copyright © 2023 Author(s). Published by IOP Publishing Ltd Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 license. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
Description
Dr. A. Fuente Cuesta would like to thank Agency for Green Technology (AGT), Dr. S. A. M. Dickson would like to thank the Faraday Institution NEXGENNA project (FIRG018), and C. Lonsdale would like to thank the Faraday Institution FUSE Internship Programme for funding. The authors also acknowledge the EPSRC (grant codes EP/L017008/1, EP/T019298/1, and EP/R023751/1).
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  • University of St Andrews Research
URI
http://hdl.handle.net/10023/26934

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