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Synthesis and Characterization of Li4Ti5O12 Anode Materials with Enhanced High-Rate Performance in Lithium-Ion Batteries

Published online by Cambridge University Press:  01 March 2018

Lei Wang ,
Christopher Tang ,
Kenneth J. Takeuchi ,
Esther S. Takeuchi  and
Amy C. Marschilok
Lei Wang
Affiliation:
Department of Chemistry, Stony Brook University, Stony Brook, NY11794
Christopher Tang
Affiliation:
Department of Materials Science and Chemical Engineering, Stony Brook University, Stony Brook, NY11794
Kenneth J. Takeuchi
Affiliation:
Department of Chemistry, Stony Brook University, Stony Brook, NY11794 Department of Materials Science and Chemical Engineering, Stony Brook University, Stony Brook, NY11794
Esther S. Takeuchi
Affiliation:
Department of Chemistry, Stony Brook University, Stony Brook, NY11794 Department of Materials Science and Chemical Engineering, Stony Brook University, Stony Brook, NY11794 Energy and Photon Sciences Directorate, Brookhaven National Laboratory, Upton, NY11973
Amy C. Marschilok*
Affiliation:
Department of Chemistry, Stony Brook University, Stony Brook, NY11794 Department of Materials Science and Chemical Engineering, Stony Brook University, Stony Brook, NY11794 Energy and Photon Sciences Directorate, Brookhaven National Laboratory, Upton, NY11973
*
*corresponding author: [email protected].
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Abstract

Li4Ti5O12 (LTO) represents a promising anode material for lithium ion batteries, however, it suffers from limitations associated with poor intrinsic electron conductivity as well as moderate ionic conductivity. Hence, to achieve the goal of creating LTO anodes with improved high-rate performance, we have put forth a number of targeted fundamental strategies. Herein we discuss the roles of controllably tuning (i) morphology, (ii) attachment modalities of carbon, and (iii) ion doping of the LTO material. In addition, we also demonstrated in situ studies of lithiation-driven structural transformations in LTO via a combination of X-ray absorption spectroscopy and ab initio calculations, which have been proven to be powerful tools to probe the negligible volume change and extraordinary stability of LTO upon repeated charge/discharge cycles.

Keywords

TiLienergy storage
Type
Articles
Information
MRS Advances , Volume 3 , Issue 11: Theory, Characterization and Modeling , 2018 , pp. 575 - 580
Copyright
Copyright © Materials Research Society 2018 

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Footnotes

ŧ

Equivalent contributions.

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