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Effects of dopant on the electrochemical properties of Li4Ti5O12 anode materials

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Abstract

The effects of dopant on the electrochemical properties of spinel-type Li3.97M0.1Ti4.94O12 (M = Mn, Ni, Co) and Li(4-x/3)CrxTi(5-2x/3)O12(x = 0.1, 0.3, 0.6, 0.9, 1.5) were systematically investigated. Charge-discharge cycling were performed at a constant current density of 0.5 mA/cm2 between the cut-off voltages of 3.0 and 1.0 V, the experimental results showed that Cr3+ dopant improved the reversible capacity and cycling stability over the pristine Li4Ti5O12. The substitution of the Mn3+ and Ni3+ slightly decreased the capacity of the Li4Ti5O12. Dopants such as Co3+ to some extent worsened the electrochemical performance of the Li4Ti5O12.

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Authors and Affiliations

  1. College of Chemistry, Sichuan University, Chengdu, 610064, People’s Republic of China

    Yan-Jing Hao, Qiong-Yu Lai & Ji-Zheng Lu

  2. Analytical and Testing Center, Sichuan University, Chengdu, 610064, People’s Republic of China

    Xiao-Yang Ji

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  1. Yan-Jing Hao
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  2. Qiong-Yu Lai
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  3. Ji-Zheng Lu
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Correspondence to Qiong-Yu Lai.

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Hao, YJ., Lai, QY., Lu, JZ. et al. Effects of dopant on the electrochemical properties of Li4Ti5O12 anode materials. Ionics 13, 369–373 (2007). https://doi.org/10.1007/s11581-007-0111-1

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  • DOI: https://doi.org/10.1007/s11581-007-0111-1

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