Staff View: High-rate and long-life cycle of nano-LiMn2O4 under high cut-off potential

High-rate and long-life cycle of nano-LiMn2O4 under high cut-off potential

Nano-LiMn2O4 was successfully synthesized by a low-temperature hydrothermal route with the absence of post-calcination treatment. Employing ethanol as an organic reagent triggers the formation of nanostructured particles approximately 30.39 nm in diameter, associated with 0.007 lattice strain. The p...

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Main Authors:	Radzi, Z., Vengadaesvaran, B., Rahim, Nasrudin Abd, Pandey, Adarsh Kumar, Arifin, K. H., Kufian, Mohd Zieauddin, Zakuan, N. S., Abidin, Zul Hazrin Zainal, Ramesh, T. Subramaniam
Format:	Article
Published:	ASME 2021
Subjects:	QC Physics QD Chemistry TK Electrical engineering. Electronics Nuclear engineering
Online Access:	http://eprints.um.edu.my/35352/
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spelling	my.um.eprints.353522022-10-31T01:35:39Z http://eprints.um.edu.my/35352/ High-rate and long-life cycle of nano-LiMn2O4 under high cut-off potential Radzi, Z. Vengadaesvaran, B. Rahim, Nasrudin Abd Pandey, Adarsh Kumar Arifin, K. H. Kufian, Mohd Zieauddin Zakuan, N. S. Abidin, Zul Hazrin Zainal Ramesh, T. Subramaniam QC Physics QD Chemistry TK Electrical engineering. Electronics Nuclear engineering Nano-LiMn2O4 was successfully synthesized by a low-temperature hydrothermal route with the absence of post-calcination treatment. Employing ethanol as an organic reagent triggers the formation of nanostructured particles approximately 30.39 nm in diameter, associated with 0.007 lattice strain. The pure phase of nano-LiMn2O4/Li displays outstanding electrochemical performances. Under 4.6 V versus Li+/Li cut-off potential, 74.3% of capacity is reserved when C-rate is increased by 50 times, while excellent capacity restoration of 96.9% after cycled again at 1 C. After 331 cycles, a capacity retention of 84.3% is harvested by nano-LiMn2O4/Li, implying the absence of phase transformations in spinel structures under such abuse conditions. This remarkable structural stability can be attributed to the small lattice strain, associated with high Li+ diffusion coefficient, which is estimated to be 10(-9.76) cm(2) s(-1) by the EIS technique. Additionally, Li+ extraction is more favorable when nano-LiMn2O4/Li is charged up to 4.6 V versus Li+/Li, interpreted by the polarization resistance (R-p) of the cell. ASME 2021-08 Article PeerReviewed Radzi, Z. and Vengadaesvaran, B. and Rahim, Nasrudin Abd and Pandey, Adarsh Kumar and Arifin, K. H. and Kufian, Mohd Zieauddin and Zakuan, N. S. and Abidin, Zul Hazrin Zainal and Ramesh, T. Subramaniam (2021) High-rate and long-life cycle of nano-LiMn2O4 under high cut-off potential. Journal of Electrochemical Energy Conversion and Storage, 18 (3). ISSN 2381-6872, DOI https://doi.org/10.1115/1.4049317 <https://doi.org/10.1115/1.4049317>. 10.1115/1.4049317
institution	Universiti Malaya
building	UM Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Malaya
content_source	UM Research Repository
url_provider	http://eprints.um.edu.my/
topic	QC Physics QD Chemistry TK Electrical engineering. Electronics Nuclear engineering
spellingShingle	QC Physics QD Chemistry TK Electrical engineering. Electronics Nuclear engineering Radzi, Z. Vengadaesvaran, B. Rahim, Nasrudin Abd Pandey, Adarsh Kumar Arifin, K. H. Kufian, Mohd Zieauddin Zakuan, N. S. Abidin, Zul Hazrin Zainal Ramesh, T. Subramaniam High-rate and long-life cycle of nano-LiMn2O4 under high cut-off potential
description	Nano-LiMn2O4 was successfully synthesized by a low-temperature hydrothermal route with the absence of post-calcination treatment. Employing ethanol as an organic reagent triggers the formation of nanostructured particles approximately 30.39 nm in diameter, associated with 0.007 lattice strain. The pure phase of nano-LiMn2O4/Li displays outstanding electrochemical performances. Under 4.6 V versus Li+/Li cut-off potential, 74.3% of capacity is reserved when C-rate is increased by 50 times, while excellent capacity restoration of 96.9% after cycled again at 1 C. After 331 cycles, a capacity retention of 84.3% is harvested by nano-LiMn2O4/Li, implying the absence of phase transformations in spinel structures under such abuse conditions. This remarkable structural stability can be attributed to the small lattice strain, associated with high Li+ diffusion coefficient, which is estimated to be 10(-9.76) cm(2) s(-1) by the EIS technique. Additionally, Li+ extraction is more favorable when nano-LiMn2O4/Li is charged up to 4.6 V versus Li+/Li, interpreted by the polarization resistance (R-p) of the cell.
format	Article
author	Radzi, Z. Vengadaesvaran, B. Rahim, Nasrudin Abd Pandey, Adarsh Kumar Arifin, K. H. Kufian, Mohd Zieauddin Zakuan, N. S. Abidin, Zul Hazrin Zainal Ramesh, T. Subramaniam
author_facet	Radzi, Z. Vengadaesvaran, B. Rahim, Nasrudin Abd Pandey, Adarsh Kumar Arifin, K. H. Kufian, Mohd Zieauddin Zakuan, N. S. Abidin, Zul Hazrin Zainal Ramesh, T. Subramaniam
author_sort	Radzi, Z.
title	High-rate and long-life cycle of nano-LiMn2O4 under high cut-off potential
title_short	High-rate and long-life cycle of nano-LiMn2O4 under high cut-off potential
title_full	High-rate and long-life cycle of nano-LiMn2O4 under high cut-off potential
title_fullStr	High-rate and long-life cycle of nano-LiMn2O4 under high cut-off potential
title_full_unstemmed	High-rate and long-life cycle of nano-LiMn2O4 under high cut-off potential
title_sort	high-rate and long-life cycle of nano-limn2o4 under high cut-off potential
publisher	ASME
publishDate	2021
url	http://eprints.um.edu.my/35352/
_version_	1748181080279613440
score	13.211869

High-rate and long-life cycle of nano-LiMn2O4 under high cut-off potential

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