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Received January 31, 2021
Accepted June 2, 2021
articles This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
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Effects of Pluronic P123 addition and Cr3+ doping on electrochemical properties of Li4Ti5O12 anode for lithium ion batteries

Department of Chemical Engineering, Chungbuk National University, 1 Chungdae-ro, Seowon-gu, Cheongju, Chungbuk 28644, Korea
nabk@chungbuk.ac.kr
Korean Journal of Chemical Engineering, September 2021, 38(9), 1826-1833(8), 10.1007/s11814-021-0861-x
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Abstract

Spinel Li4Ti5O12 is an attractive anode material for lithium ion batteries due to its stable electrochemical characteristics. However, its low electrical conductivity is regarded as a critical disadvantage for commercialization. The addition of P123 with Cr3+ doping enhanced the surface area and the electrical conductivity, which improved the electrochemical properties of Li4Ti5O12. As-prepared samples were analyzed by X-ray diffraction, X-ray photoelectron spectroscopy, field-emission scanning electron microscopy, as well as BET and BJH analysis. Electrochemical properties were investigated by cyclic voltammetry, electrochemical impedance spectroscopy, powder conductivity measurement and cycle performance testing. P-Li4Ti4.95Cr0.05O12 showed excellent rate performance of 191, 189, 184, 175, 157, and 137 mAh/g at C-rates of 0.2, 0.5, 1, 2, 5, and 10 and high stable capacity retention of 147mAh/g at a C-rate of 10 after 300 cycles.

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