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 137mAh/g at C-rates of 0.2, 0.5, 1, 2, 5, and 10 and high stable capacity retention of 147 mAh/g at a C-rate of 10 after 300 cycles.
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This work was supported by the Technology Development Program (S2719254) funded by the Ministry of SMEs and Startups (MSS, Korea).
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Seo, JS., Na, BK. Effects of Pluronic P123 addition and Cr3+ doping on electrochemical properties of Li4Ti5O12 anode for lithium ion batteries. Korean J. Chem. Eng. 38, 1826–1833 (2021). https://doi.org/10.1007/s11814-021-0861-x
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DOI: https://doi.org/10.1007/s11814-021-0861-x