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Title: Hydrothermal synthesis of Li{sub 4}Ti{sub 5}O{sub 12}/C nanostructured composites: Morphology and electrochemical performance

Abstract

Graphical abstract: Display Omitted Highlights: ► Nanostructured composite Li{sub 4}Ti{sub 5}O{sub 12}/C was obtained hydrothermally. ► The amount of carbon black influenced significantly the morphology of the composite. ► Rate capability of Li{sub 4}Ti{sub 5}O{sub 12} was improved by the synthesis in presence of carbon black. ► Coulombic capacity of 150 mAh g{sup −1} was obtained at a discharging rate of even 10 C. -- Abstract: Li{sub 4}Ti{sub 5}O{sub 12}/C composites with low (3 wt.%) and high (33 wt.%) carbon black content as well as carbon-free Li{sub 4}Ti{sub 5}O{sub 12} were prepared in two steps under identical conditions: hydrothermal reaction at 130 °C and post-calcination at 400 °C. The X-ray diffraction experiments confirmed the spinel structure of Li{sub 4}Ti{sub 5}O{sub 12} in all samples. The carbon content altered significantly the morphology of obtained micro/nanoparticles. The Li{sub 4}Ti{sub 5}O{sub 12}/C composite with the high carbon content showed the highest electrical conductivity (2.0 S cm{sup −1}), and displayed also extraordinary electrochemical performance: the cyclovoltammograms consisted of well defined reversible redox peaks at a scan rate as high as 10 mV s{sup −1}, while, by galvanostatic cycling, the coulombic capacity of 150 mAh g{sup −1} was evidenced at a discharging rate of 10more » C.« less

Authors:
;  [1];  [2];  [1];  [1]
  1. Faculty of Physical Chemistry, Belgrade University, Studentski trg 12-16, 11158 Belgrade 118, PAC 105305 (Serbia)
  2. The Vinča Institute for Nuclear Sciences, Laboratory for Theoretical and Condensed Matter Physics, 11001 Vinča (Serbia)
Publication Date:
OSTI Identifier:
22215791
Resource Type:
Journal Article
Journal Name:
Materials Research Bulletin
Additional Journal Information:
Journal Volume: 48; Journal Issue: 2; Other Information: Copyright (c) 2012 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0025-5408
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 77 NANOSCIENCE AND NANOTECHNOLOGY; CARBON BLACK; ELECTRIC CONDUCTIVITY; ELECTRON MICROSCOPY; HYDROTHERMAL SYNTHESIS; LITHIUM TITANATES; NANOSTRUCTURES; SPINELS; X-RAY DIFFRACTION

Citation Formats

Vujković, Milica, Stojković, Ivana, Mitrić, Miodrag, Mentus, Slavko, The Serbian Academy of Sciences and Arts, Knez Mihajlova 35, 11000 Belgrade, and Cvjetićanin, Nikola. Hydrothermal synthesis of Li{sub 4}Ti{sub 5}O{sub 12}/C nanostructured composites: Morphology and electrochemical performance. United States: N. p., 2013. Web. doi:10.1016/J.MATERRESBULL.2012.09.071.
Vujković, Milica, Stojković, Ivana, Mitrić, Miodrag, Mentus, Slavko, The Serbian Academy of Sciences and Arts, Knez Mihajlova 35, 11000 Belgrade, & Cvjetićanin, Nikola. Hydrothermal synthesis of Li{sub 4}Ti{sub 5}O{sub 12}/C nanostructured composites: Morphology and electrochemical performance. United States. https://doi.org/10.1016/J.MATERRESBULL.2012.09.071
Vujković, Milica, Stojković, Ivana, Mitrić, Miodrag, Mentus, Slavko, The Serbian Academy of Sciences and Arts, Knez Mihajlova 35, 11000 Belgrade, and Cvjetićanin, Nikola. 2013. "Hydrothermal synthesis of Li{sub 4}Ti{sub 5}O{sub 12}/C nanostructured composites: Morphology and electrochemical performance". United States. https://doi.org/10.1016/J.MATERRESBULL.2012.09.071.
@article{osti_22215791,
title = {Hydrothermal synthesis of Li{sub 4}Ti{sub 5}O{sub 12}/C nanostructured composites: Morphology and electrochemical performance},
author = {Vujković, Milica and Stojković, Ivana and Mitrić, Miodrag and Mentus, Slavko and The Serbian Academy of Sciences and Arts, Knez Mihajlova 35, 11000 Belgrade and Cvjetićanin, Nikola},
abstractNote = {Graphical abstract: Display Omitted Highlights: ► Nanostructured composite Li{sub 4}Ti{sub 5}O{sub 12}/C was obtained hydrothermally. ► The amount of carbon black influenced significantly the morphology of the composite. ► Rate capability of Li{sub 4}Ti{sub 5}O{sub 12} was improved by the synthesis in presence of carbon black. ► Coulombic capacity of 150 mAh g{sup −1} was obtained at a discharging rate of even 10 C. -- Abstract: Li{sub 4}Ti{sub 5}O{sub 12}/C composites with low (3 wt.%) and high (33 wt.%) carbon black content as well as carbon-free Li{sub 4}Ti{sub 5}O{sub 12} were prepared in two steps under identical conditions: hydrothermal reaction at 130 °C and post-calcination at 400 °C. The X-ray diffraction experiments confirmed the spinel structure of Li{sub 4}Ti{sub 5}O{sub 12} in all samples. The carbon content altered significantly the morphology of obtained micro/nanoparticles. The Li{sub 4}Ti{sub 5}O{sub 12}/C composite with the high carbon content showed the highest electrical conductivity (2.0 S cm{sup −1}), and displayed also extraordinary electrochemical performance: the cyclovoltammograms consisted of well defined reversible redox peaks at a scan rate as high as 10 mV s{sup −1}, while, by galvanostatic cycling, the coulombic capacity of 150 mAh g{sup −1} was evidenced at a discharging rate of 10 C.},
doi = {10.1016/J.MATERRESBULL.2012.09.071},
url = {https://www.osti.gov/biblio/22215791}, journal = {Materials Research Bulletin},
issn = {0025-5408},
number = 2,
volume = 48,
place = {United States},
year = {Fri Feb 15 00:00:00 EST 2013},
month = {Fri Feb 15 00:00:00 EST 2013}
}