Sadan, M.K. orcid.org/0000-0002-4704-5789, Lian, G.J., Smith, R.M. orcid.org/0000-0003-2340-0042 et al. (1 more author) (2023) Co, Ni-free ultrathick free-standing dry electrodes for sustainable lithium-ion batteries. ACS Applied Energy Materials, 6 (24). pp. 12166-12171. ISSN 2574-0962
Abstract
The conventional method of manufacturing lithium-ion battery electrodes employs a complex slurry casting process with solvents that are not environmentally friendly and process parameters that are often difficult to control. This study explores a solvent-free dry electrode fabrication process of Co- and Ni-free LiMn2O4 (LMO) cathodes using a fibrillated polymer, polytetrafluoroethylene (PTFE). A thick, dry electrode (265-368 μm, 30-64 mg cm-2) of LMO cathode was prepared successfully for the first time. Altering the conductive additives in the LMO dry electrode revealed multiwalled carbon nanotubes (CNTs) as the best conducting agent for dry electrode formulation in terms of conductivity and rate performance. Additionally, an all-dry electrode full cell consisting of both a dry electrode cathode (LMO) and an anode (LTO) delivered a stable cycling performance with a capacity retention of 82.8% after 200 cycles, demonstrating the scope for all-dry electrode full cells for future applications.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2023 The Authors. This is an Open Access article distributed under the terms of the Creative Commons Attribution Licence (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
Keywords: | Carbon nanotubes; Electrochemical cells; Electrodes; Manufacturing; Nanofibers |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Chemical and Biological Engineering (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 05 Jan 2024 11:30 |
Last Modified: | 05 Jan 2024 11:30 |
Status: | Published |
Publisher: | American Chemical Society (ACS) |
Refereed: | Yes |
Identification Number: | 10.1021/acsaem.3c02448 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:207116 |