Structure and Electrochemical Properties of Li4Ti5O12 Prepared via Low-Temperature Precipitation
This work aimed to prepare the spinel phase Li4Ti5O12 by a combination of the low-temperature precipitation technique and assisted calcination step. X-ray diffraction (XRD) revealed that the intermediated phase was Li2TiO3, and the spinel phase could be evidently formed at 700°C for 12 to 20 hours....
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doaj-5371a0b2149f49d5b6deae21ffa52fc92020-11-24T21:27:49ZengHindawi LimitedJournal of Chemistry2090-90632090-90712019-01-01201910.1155/2019/17278591727859Structure and Electrochemical Properties of Li4Ti5O12 Prepared via Low-Temperature PrecipitationLe Thanh Nguyen Huynh0Cam Thanh Duy Ha1Viet Dung Nguyen2Dinh Quan Nguyen3My Loan Phung Le4Van Man Tran5Applied Physical Chemistry Laboratory (APCLAB), VNUHCM-University of Science, 227 Nguyen Van Cu Street, District 5, Ho Chi Minh City, VietnamApplied Physical Chemistry Laboratory (APCLAB), VNUHCM-University of Science, 227 Nguyen Van Cu Street, District 5, Ho Chi Minh City, VietnamApplied Physical Chemistry Laboratory (APCLAB), VNUHCM-University of Science, 227 Nguyen Van Cu Street, District 5, Ho Chi Minh City, VietnamBiomass Laboratory, VNUHCM-University of Technology, 268 Ly Thuong Kiet street, District 10, Ho Chi Minh City, VietnamApplied Physical Chemistry Laboratory (APCLAB), VNUHCM-University of Science, 227 Nguyen Van Cu Street, District 5, Ho Chi Minh City, VietnamApplied Physical Chemistry Laboratory (APCLAB), VNUHCM-University of Science, 227 Nguyen Van Cu Street, District 5, Ho Chi Minh City, VietnamThis work aimed to prepare the spinel phase Li4Ti5O12 by a combination of the low-temperature precipitation technique and assisted calcination step. X-ray diffraction (XRD) revealed that the intermediated phase was Li2TiO3, and the spinel phase could be evidently formed at 700°C for 12 to 20 hours. The morphology of spinel powder, determined by SEM and TEM, exhibited a good distribution at the submicrometric scale that promoted a fast kinetic of Li migration and an excellent performance at the high-rate cycling test. The stable performances were achieved in the charge-discharge test at different current densities: 80 mA/g (165 mAh/g), 320 mA (160 mAh/g), and 1600 mA (145 mAh/g) upon 100 cycles. Moreover, we observe a capacity retention of 48% (corresponding 80 mA/g) at a high rate of 5000 mAh/g. The cyclic voltammetry measurement displayed a reversible system and revealed the lithium diffusion coefficient of 1.15 × 10−11 cm2/s.http://dx.doi.org/10.1155/2019/1727859 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Le Thanh Nguyen Huynh Cam Thanh Duy Ha Viet Dung Nguyen Dinh Quan Nguyen My Loan Phung Le Van Man Tran |
spellingShingle |
Le Thanh Nguyen Huynh Cam Thanh Duy Ha Viet Dung Nguyen Dinh Quan Nguyen My Loan Phung Le Van Man Tran Structure and Electrochemical Properties of Li4Ti5O12 Prepared via Low-Temperature Precipitation Journal of Chemistry |
author_facet |
Le Thanh Nguyen Huynh Cam Thanh Duy Ha Viet Dung Nguyen Dinh Quan Nguyen My Loan Phung Le Van Man Tran |
author_sort |
Le Thanh Nguyen Huynh |
title |
Structure and Electrochemical Properties of Li4Ti5O12 Prepared via Low-Temperature Precipitation |
title_short |
Structure and Electrochemical Properties of Li4Ti5O12 Prepared via Low-Temperature Precipitation |
title_full |
Structure and Electrochemical Properties of Li4Ti5O12 Prepared via Low-Temperature Precipitation |
title_fullStr |
Structure and Electrochemical Properties of Li4Ti5O12 Prepared via Low-Temperature Precipitation |
title_full_unstemmed |
Structure and Electrochemical Properties of Li4Ti5O12 Prepared via Low-Temperature Precipitation |
title_sort |
structure and electrochemical properties of li4ti5o12 prepared via low-temperature precipitation |
publisher |
Hindawi Limited |
series |
Journal of Chemistry |
issn |
2090-9063 2090-9071 |
publishDate |
2019-01-01 |
description |
This work aimed to prepare the spinel phase Li4Ti5O12 by a combination of the low-temperature precipitation technique and assisted calcination step. X-ray diffraction (XRD) revealed that the intermediated phase was Li2TiO3, and the spinel phase could be evidently formed at 700°C for 12 to 20 hours. The morphology of spinel powder, determined by SEM and TEM, exhibited a good distribution at the submicrometric scale that promoted a fast kinetic of Li migration and an excellent performance at the high-rate cycling test. The stable performances were achieved in the charge-discharge test at different current densities: 80 mA/g (165 mAh/g), 320 mA (160 mAh/g), and 1600 mA (145 mAh/g) upon 100 cycles. Moreover, we observe a capacity retention of 48% (corresponding 80 mA/g) at a high rate of 5000 mAh/g. The cyclic voltammetry measurement displayed a reversible system and revealed the lithium diffusion coefficient of 1.15 × 10−11 cm2/s. |
url |
http://dx.doi.org/10.1155/2019/1727859 |
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