Imperial College London
Alternate

Dr Ainara Aguadero

Faculty of Engineering, Department of Materials

Visiting Reader
 
 
 
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Contact

 

+44 (0)20 7594 5174a.aguadero CV

 
 
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Location

 

1.07Royal School of MinesSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Lee:2021:10.1002/batt.202100110,
author = {Lee, J and Amari, H and Bahri, M and Shen, Z and Xu, C and Ruff, Z and Grey, CP and Ersen, O and Aguadero, A and Browning, ND and Mehdi, BL},
doi = {10.1002/batt.202100110},
journal = {Batteries & Supercaps},
pages = {1813--1820},
title = {The complex role of aluminium contamination in nickel-rich layered oxide cathodes for lithium-ion batteries},
url = {http://dx.doi.org/10.1002/batt.202100110},
volume = {4},
year = {2021}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - A major challenge for lithium-ion batteries based on nickel-rich layered oxide cathodes is capacity fading. While chemo-mechanical degradation and/or structural transformation are widely considered responsible for degradation, a comprehensive understanding of this process is still not complete. For the stable performance of these cathode materials, aluminium (Al) plays a crucial role, not only as a current collector but also as substitutional element for the transition metals in the cathodes and a protective oxide coating (as Al2O3). However, excess Al can be detrimental due to both its redox inactive nature in the cathode and the insulating nature of Al2O3. In this work, we report an analysis of the Al content in two different types of nickel-rich manganese cobalt oxide cathode materials after battery cycling. Our results indicate a significant thickening of Al-containing phases on the surface of the NMC811 electrode. Similar results are observed from commercial batteries (a mixture of NMC532 and LiMn2O4) that were analysed before use and at the end of life, where Al-containing phases were found to increase significantly at surfaces and grain boundaries. Considering the detrimental effects of the excess Al in the nickel-rich cathodes, our observation of increased Al content via battery cycling is believed to bring a new perspective to the ongoing discussions regarding the capacity fading phenomenon of nickel-rich layered oxide materials as part of their complex degradation mechanisms.
AU  - Lee,J
AU  - Amari,H
AU  - Bahri,M
AU  - Shen,Z
AU  - Xu,C
AU  - Ruff,Z
AU  - Grey,CP
AU  - Ersen,O
AU  - Aguadero,A
AU  - Browning,ND
AU  - Mehdi,BL
DO  - 10.1002/batt.202100110
EP  - 1820
PY  - 2021///
SN  - 2566-6223
SP  - 1813
TI  - The complex role of aluminium contamination in nickel-rich layered oxide cathodes for lithium-ion batteries
T2  - Batteries & Supercaps
UR  - http://dx.doi.org/10.1002/batt.202100110
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000672891100001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - https://chemistry-europe.onlinelibrary.wiley.com/doi/10.1002/batt.202100110
UR  - http://hdl.handle.net/10044/1/99036
VL  - 4
ER  -
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