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Enhanced electrochemical properties of Al2O3-coated LiNiPO4 cathode materials for lithium-ion batteries

Cathode materials play a vital role in lithium-ion batteries to evaluate its performance. LiNiPO4 is one of the attractive cathodes due to its high voltage accompanied by olivine structure. The synthesis of LiNiPO4 cathode materials using an oxalic acid-assisted sol–gel method resulted in pristine s...

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Main Authors: K. Rajammal, Arshid, Numan, Dhar Malingam, Sivakumar
Format: Article
Language:English
Published: Springer Science and Business Media Deutschland GmbH 2024
Online Access:http://eprints.utem.edu.my/id/eprint/28459/2/00774301220241439131551.pdf
http://eprints.utem.edu.my/id/eprint/28459/
https://link.springer.com/article/10.1007/s11581-024-05894-7
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spelling my.utem.eprints.284592025-03-05T10:26:52Z http://eprints.utem.edu.my/id/eprint/28459/ Enhanced electrochemical properties of Al2O3-coated LiNiPO4 cathode materials for lithium-ion batteries K. Rajammal Arshid, Numan Dhar Malingam, Sivakumar Cathode materials play a vital role in lithium-ion batteries to evaluate its performance. LiNiPO4 is one of the attractive cathodes due to its high voltage accompanied by olivine structure. The synthesis of LiNiPO4 cathode materials using an oxalic acid-assisted sol–gel method resulted in pristine samples, which were subsequently coated with 1 wt.% and 2 wt.% Al2O3 to investigate the impact on electrochemical properties. Structural analyses employing X-ray diffraction, scanning electron microscopy, and Fourier transform infrared spectroscopy revealed that the Al2O3-coated LiNiPO4 samples exhibited enhanced crystallinity and smaller crystallite sizes compared to the pristine material. The initial discharge capacities were measured at 119.05 and 115.48 mAhg−1 for the 1 and 2 wt.% Al2O3-coated samples, respectively, slightly higher than the pristine sample’s discharge capacity of 110.71 mAhg−1. During cycling, the Al2O3-coated samples initially demonstrated superior capacity retention and cycling performance. Specifically, the 1 wt.% Al2O3-coated sample maintained good capacity retention throughout the cycles, indicating improved lithium-ion diffusion and structural stability. In conclusion, the study highlights that an optimal amount of Al2O3 coating enhances the structural properties and lithium-ion diffusion within LiNiPO4 cathode materials, significantly improving their electrochemical performance. The findings underscore the importance of controlled coating strategies in optimizing the functionality and longevity of battery materials for advanced energy storage applications. Springer Science and Business Media Deutschland GmbH 2024-10 Article PeerReviewed text en cc_by_4 http://eprints.utem.edu.my/id/eprint/28459/2/00774301220241439131551.pdf K. Rajammal and Arshid, Numan and Dhar Malingam, Sivakumar (2024) Enhanced electrochemical properties of Al2O3-coated LiNiPO4 cathode materials for lithium-ion batteries. Ionics, 30. pp. 7929-7938. ISSN 0947-7047 https://link.springer.com/article/10.1007/s11581-024-05894-7 10.1007/s11581-024-05894-7
institution Universiti Teknikal Malaysia Melaka
building UTEM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknikal Malaysia Melaka
content_source UTEM Institutional Repository
url_provider http://eprints.utem.edu.my/
language English
description Cathode materials play a vital role in lithium-ion batteries to evaluate its performance. LiNiPO4 is one of the attractive cathodes due to its high voltage accompanied by olivine structure. The synthesis of LiNiPO4 cathode materials using an oxalic acid-assisted sol–gel method resulted in pristine samples, which were subsequently coated with 1 wt.% and 2 wt.% Al2O3 to investigate the impact on electrochemical properties. Structural analyses employing X-ray diffraction, scanning electron microscopy, and Fourier transform infrared spectroscopy revealed that the Al2O3-coated LiNiPO4 samples exhibited enhanced crystallinity and smaller crystallite sizes compared to the pristine material. The initial discharge capacities were measured at 119.05 and 115.48 mAhg−1 for the 1 and 2 wt.% Al2O3-coated samples, respectively, slightly higher than the pristine sample’s discharge capacity of 110.71 mAhg−1. During cycling, the Al2O3-coated samples initially demonstrated superior capacity retention and cycling performance. Specifically, the 1 wt.% Al2O3-coated sample maintained good capacity retention throughout the cycles, indicating improved lithium-ion diffusion and structural stability. In conclusion, the study highlights that an optimal amount of Al2O3 coating enhances the structural properties and lithium-ion diffusion within LiNiPO4 cathode materials, significantly improving their electrochemical performance. The findings underscore the importance of controlled coating strategies in optimizing the functionality and longevity of battery materials for advanced energy storage applications.
format Article
author K. Rajammal
Arshid, Numan
Dhar Malingam, Sivakumar
spellingShingle K. Rajammal
Arshid, Numan
Dhar Malingam, Sivakumar
Enhanced electrochemical properties of Al2O3-coated LiNiPO4 cathode materials for lithium-ion batteries
author_facet K. Rajammal
Arshid, Numan
Dhar Malingam, Sivakumar
author_sort K. Rajammal
title Enhanced electrochemical properties of Al2O3-coated LiNiPO4 cathode materials for lithium-ion batteries
title_short Enhanced electrochemical properties of Al2O3-coated LiNiPO4 cathode materials for lithium-ion batteries
title_full Enhanced electrochemical properties of Al2O3-coated LiNiPO4 cathode materials for lithium-ion batteries
title_fullStr Enhanced electrochemical properties of Al2O3-coated LiNiPO4 cathode materials for lithium-ion batteries
title_full_unstemmed Enhanced electrochemical properties of Al2O3-coated LiNiPO4 cathode materials for lithium-ion batteries
title_sort enhanced electrochemical properties of al2o3-coated linipo4 cathode materials for lithium-ion batteries
publisher Springer Science and Business Media Deutschland GmbH
publishDate 2024
url http://eprints.utem.edu.my/id/eprint/28459/2/00774301220241439131551.pdf
http://eprints.utem.edu.my/id/eprint/28459/
https://link.springer.com/article/10.1007/s11581-024-05894-7
_version_ 1825816619020976128
score 13.244413

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