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Open AccessFeature PaperArticle

Effect of Carbon Additives on the Electrochemical Performance of Li4Ti5O12/C Anodes

Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, Leninsky prospekt 31, 119991 Moscow, Russia
Department of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia
Frumkin Institute of Physical Chemistry and Electrochemistry of the Russian Academy of Sciences, Leninsky prospekt 31-4, 119071 Moscow, Russia
Prokhorov General Physics Institute of the Russian Academy of Sciences, 38, Vavilov Str., 119991 Moscow, Russia
Department of Materials Science of Semiconductors and Dielectrics, National University of Science and Technology (MISIS), 119049 Moscow, Russia
Author to whom correspondence should be addressed.
Energies 2020, 13(15), 3941;
Received: 26 June 2020 / Revised: 25 July 2020 / Accepted: 29 July 2020 / Published: 1 August 2020
(This article belongs to the Special Issue Advanced Nanomaterials for Li- and Na-Ion Batteries)
The Li4Ti5O12/C composites were prepared by a hydrothermal method with in situ carbon addition. The influence of the morphology and content of various carbon materials (conductive carbon black, mesoporous carbon G_157M, and carbon replicas) on the electrochemical performance of the Li4Ti5O12/C composites was investigated. The obtained composites were characterized using X-ray diffraction, scanning electron microsopy, high-resolution transmission electron microscopy, thermogravimetric analysis, Raman spectroscopy, and N2 sorption-desorption isotherms. Morphology of the Li4Ti5O12/C composites depends on the carbon matrix used, while both morphology and the amount of carbon material have a great impact on the rate capability and cycling stability of the obtained composites. At low current densities, the Li4Ti5O12/C composite with 5 wt.% G_157M exhibits the highest discharge capacity, while at high charge-discharge rates, the Li4Ti5O12/carbon black composites show the best electrochemical performance. Thus, at ~0.1C, 5C, and 18C rates, the discharge capacities of the obtained Li4Ti5O12/C composites are 175, 120, and 70 mAh/g for G_157M, 165, 126, and 78 mAh/g for carbon replicas, and 173, 128, and 93 mAh/g for carbon black. After 100 cycles, their capacity retention is no less than 95%, suggesting their promising application perspective. View Full-Text
Keywords: lithium ion battery; Li4Ti5O12; mesoporous carbon; carbon replica lithium ion battery; Li4Ti5O12; mesoporous carbon; carbon replica
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MDPI and ACS Style

Stenina, I.; Shaydullin, R.; Kulova, T.; Kuz’mina, A.; Tabachkova, N.; Yaroslavtsev, A. Effect of Carbon Additives on the Electrochemical Performance of Li4Ti5O12/C Anodes. Energies 2020, 13, 3941.

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