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Lookup NU author(s): Professor Mohamed MamloukORCiD
This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).
© 2024Tin (Sn), with a theoretical capacity of 994 mAh g-1, is a promising anode material for lithium-ion batteries (LIBs). However, fundamental limitations like large volume expansion during charge-discharge cycle and confined electronic conductivity limit its practical utility. Here, we report a new material design and manufacturing method of LIB anodes using Sn and Hard Carbon (HC) architecture, which is produced by Physical Vapor Deposition (PVD). A bilayer HC/Sn anode structure is deposited on a carbon/copper sheet as a function of deposition time, temperature, and substrate heat treatment. The developed anodes are used to make cells with a lithium-ion electrolyte using a specific fabrication process. The morphology, atomic structure, conductivity, and electrochemical performance of the developed HC/Sn anodes are studied with SEM, TEM, XPS, and electrochemical techniques. At a discharge rate of 0.1C, the Snheated + HC anode performs exceptionally well, offering a capacity of 763 mAh g-1. It is noteworthy that it achieves a capacity of 342 mAh g-1 when fast charging at 5C, demonstrating exceptional rate capability. The Snheated + HC anode maintains >97 % Coulombic efficiency of its capacity after 3000 cycles at a rate of 0.1C after 3000 cycles 730.5 mAh g-1 recorded, demonstrating an impressive cycle life. The novel material design approach of the Snheated + HC anode, which has a multi-layered structure and HC acting as a barrier against volumetric expansion and improving electronic conductivity during battery cycling, is perceived as influential in uplifting anode's performance.
Author(s): Shahzad RF, Rasul S, Mamlouk M, Lukose CC, Shakoor RA, Zia AW
Publication type: Article
Publication status: Published
Journal: Journal of Energy Storage
Year: 2024
Volume: 100
Issue: Part B
Print publication date: 20/10/2024
Online publication date: 09/09/2024
Acceptance date: 05/09/2024
Date deposited: 23/09/2024
ISSN (print): 2352-152X
ISSN (electronic): 2352-1538
Publisher: Elsevier Ltd
URL: https://doi.org/10.1016/j.est.2024.113671
DOI: 10.1016/j.est.2024.113671
Data Access Statement: Data will be made available on request.
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