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HomeKey Engineering MaterialsKey Engineering Materials Vol. 905Effect of Carbon Source on Synthesis of Carbon...

Effect of Carbon Source on Synthesis of Carbon Coated Lithium Titanate

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Abstract:

Carbon coated lithium titanate (Li₄Ti₅O₁₂/C) was obtained by a facile solid state approach in inert Ar atmosphere. The composition, morphology, residual carbon content and Ti valence of the samples were systematically investigated. The carbon content of Li₄Ti₅O₁₂/C should be optimized, since excess carbon in the composite leads to the reduction of Ti (IV) to form Ti (III), which results in large irreversible capacity of Li₄Ti₅O₁₂/C. With an optimal carbon content of 0.68wt%, the Li₄Ti₅O₁₂/C sample shows high rate capabilities and good cycling ability, delivering discharge capacities of 160.8 mAh/g at 5C. The superior high rate properties are ascribed to the specific nanostructures, which enables fast electronic and ionic transport by introducing carbon coating and decreasing the particle size of lithium titanate.

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Material Science and Engineering

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Periodical:

Key Engineering Materials (Volume 905)

Pages:

160-165

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.905.160

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Online since:

January 2022

Authors:

Rong Yang, Chun Rong Zhao, Su Rong Kan, Min Juan Yuan*

Keywords:

Anode Material, Carbon Coating, Lithium Ion Batteries, Lithium Titanate

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© 2022 Trans Tech Publications Ltd. All Rights Reserved

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