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Title: Ultrathin Li4Ti5O12 nanosheets as anode materials for lithium and sodium storage

Abstract

Two-dimensional Li4Ti5O12 (LTO) nanosheets are prepared via a surfactant assisted hydrothermal process. Polyether (P123) was added as the surfactant to modify the surface and control the microstructure of the hydrothermal products and thus affect the electrochemical performance of the as-synthesized LTO anode material. XRD results show that the addition of P123 can restrain the growth of Li2TiO3 during the hydrothermal process, thus affecting the morphology and enhancing the rate performance of the final products. With the addition of P123, the growth of LTO can be restrained and ultrathin LTO nanosheets can be obtained after high temperature sintering, which is beneficial for the charge transfer and Li+ ion diffusion. The rate performance of these two different LTO materials is very different because of their differences in phase composition and fine morphology. The P123-assisted nanostructured LTO sample (P-LTO) shows a much higher rate capability than the LTO sample without P123, with over 130 mAh g-1 capacity retained at the charge-discharge rate of 64C when used in a lithium battery. For intercalation of larger size Na+ ions, the P-LTO still exhibit a capacity of 115 mAh g-1 at a charge (de-sodiation process) rate of 10C and maintains 96% capacity after 400 cycles

Authors:
; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Pacific Northwest National Laboratory (PNNL), Richland, WA (US), Environmental Molecular Sciences Laboratory (EMSL)
Sponsoring Org.:
USDOE
OSTI Identifier:
1324886
Report Number(s):
PNNL-SA-114583
Journal ID: ISSN 1944-8244; 48379; VT1201000
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Resource Relation:
Journal Name: ACS Applied Materials and Interfaces; Journal Volume: 8; Journal Issue: 26
Country of Publication:
United States
Language:
English
Subject:
Environmental Molecular Sciences Laboratory

Citation Formats

Feng, Xuyong, Zou, Hailin, Xiang, Hongfa, Guo, Xin, Zhou, Tianpei, Wu, Yucheng, Xu, Wu, Yan, Pengfei, Wang, Chong M., Zhang, Jiguang, and Yu, Yan. Ultrathin Li4Ti5O12 nanosheets as anode materials for lithium and sodium storage. United States: N. p., 2016. Web. doi:10.1021/acsami.6b04752.
Feng, Xuyong, Zou, Hailin, Xiang, Hongfa, Guo, Xin, Zhou, Tianpei, Wu, Yucheng, Xu, Wu, Yan, Pengfei, Wang, Chong M., Zhang, Jiguang, & Yu, Yan. Ultrathin Li4Ti5O12 nanosheets as anode materials for lithium and sodium storage. United States. doi:10.1021/acsami.6b04752.
Feng, Xuyong, Zou, Hailin, Xiang, Hongfa, Guo, Xin, Zhou, Tianpei, Wu, Yucheng, Xu, Wu, Yan, Pengfei, Wang, Chong M., Zhang, Jiguang, and Yu, Yan. Mon . "Ultrathin Li4Ti5O12 nanosheets as anode materials for lithium and sodium storage". United States. doi:10.1021/acsami.6b04752.
@article{osti_1324886,
title = {Ultrathin Li4Ti5O12 nanosheets as anode materials for lithium and sodium storage},
author = {Feng, Xuyong and Zou, Hailin and Xiang, Hongfa and Guo, Xin and Zhou, Tianpei and Wu, Yucheng and Xu, Wu and Yan, Pengfei and Wang, Chong M. and Zhang, Jiguang and Yu, Yan},
abstractNote = {Two-dimensional Li4Ti5O12 (LTO) nanosheets are prepared via a surfactant assisted hydrothermal process. Polyether (P123) was added as the surfactant to modify the surface and control the microstructure of the hydrothermal products and thus affect the electrochemical performance of the as-synthesized LTO anode material. XRD results show that the addition of P123 can restrain the growth of Li2TiO3 during the hydrothermal process, thus affecting the morphology and enhancing the rate performance of the final products. With the addition of P123, the growth of LTO can be restrained and ultrathin LTO nanosheets can be obtained after high temperature sintering, which is beneficial for the charge transfer and Li+ ion diffusion. The rate performance of these two different LTO materials is very different because of their differences in phase composition and fine morphology. The P123-assisted nanostructured LTO sample (P-LTO) shows a much higher rate capability than the LTO sample without P123, with over 130 mAh g-1 capacity retained at the charge-discharge rate of 64C when used in a lithium battery. For intercalation of larger size Na+ ions, the P-LTO still exhibit a capacity of 115 mAh g-1 at a charge (de-sodiation process) rate of 10C and maintains 96% capacity after 400 cycles},
doi = {10.1021/acsami.6b04752},
journal = {ACS Applied Materials and Interfaces},
number = 26,
volume = 8,
place = {United States},
year = {Mon Jun 13 00:00:00 EDT 2016},
month = {Mon Jun 13 00:00:00 EDT 2016}
}