In-situ continuous hydrothermal synthesis of TiO2 nanoparticles on conductive N-doped MXene nanosheets for binder-free Li-ion battery anodes
Journal article
Alli, U., McCarthy, K, Baragau, I., Power, N., Morgan, K, Dunn, S., Killian, S, Kennedy, T. and Kellici, S. (2021). In-situ continuous hydrothermal synthesis of TiO2 nanoparticles on conductive N-doped MXene nanosheets for binder-free Li-ion battery anodes. Chemical Engineering Journal. https://doi.org/10.1016/j.cej.2021.132976
Authors | Alli, U., McCarthy, K, Baragau, I., Power, N., Morgan, K, Dunn, S., Killian, S, Kennedy, T. and Kellici, S. |
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Abstract | Anode materials are key to determining the energy density, cyclability and of life recyclability for Li-ion energy storage systems. High surface area materials, such as MXenes, can be manufactured with improved electrochemical properties that remove the need for polymeric binders or hazardous chemicals that pose a challenge to recycle Li-ion batteries. However, there remains a challenge to produce Li-ion anode materials that are binder free and poses energy storage characteristics that match the current carbon-based electrodes. Here we show the synthesis of N-doped MXene-TiO2 hybrid anode materials using an aqueous route. N-doped TiO2-MXene was modified using a single step continuous hydrothermal process. Capacity tests indicate an improvement from the initial specific energy capacity of 305 mAhg-1 to 369 mAhg-1 after 100 cycles at a charge rate of 0.1 C and a Coulombic efficiency of 99.7%. This compares to 252 mAhg-1 for the unmodified MXene which exhibited significant capacity fade to 140 mAhg-1. The ability to manufacture a Li-ion anode that does not require toxic chemicals for processing into an electrode and exhibits good energy storage characteristics in a binder free system is a significant step forward for energy storage applications. |
Keywords | MXene; nitrogen-doping; continuous hydrothermal flow synthesis; binder-free electrode processing. |
Year | 2021 |
Journal | Chemical Engineering Journal |
Publisher | Elsevier |
ISSN | 1385-8947 |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.cej.2021.132976 |
Web address (URL) | https://www.sciencedirect.com/science/article/pii/S1385894721045526#! |
Publication dates | |
14 Oct 2021 | |
Publication process dates | |
Accepted | 09 Oct 2021 |
Deposited | 15 Oct 2021 |
Accepted author manuscript | License File description manuscript File Access Level Open |
https://openresearch.lsbu.ac.uk/item/8y216
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Accepted author manuscript
1-s2.0-S1385894721045526-main.pdf | ||
License: CC BY-NC-ND 4.0 | ||
File access level: Open |
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