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Structural and electrochemical investigation of Zn-doped LiCoO2 powders

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Abstract

A commercial cathode material (LiCoO2) was modified by doping with Zn to improve its performance in lithium battery. The structure and morphology of the doped cathode material were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM). The synthesized samples were characterized using X-ray photoelectron spectra (XPS), used to investigate the elementary states on the system. The electrical conductivity variations of doped powders were measured in the temperature range between 30 and 150 °C. The 3 mol% Zn-doped LiCoO2 sample shows the highest reversibility capacity (178 mA h g−1) after 30 cycles in the voltage window 3.0–4.5 V.

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Acknowledgement

The authors thank the University Grants Commission (UGC-SERO), Hyderabad, India, for the financial support for this work.

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Authors and Affiliations

  1. Physics Department, Ananda College, Devakottai, 630303, India

    S. Valanarasu

  2. Physics Department, Sree Sevugan Annamalai College, Devakottai, 630303, India

    R. Chandramohan, J. Thirumalai & T. A. Vijayan

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  1. S. Valanarasu
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  2. R. Chandramohan
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  3. J. Thirumalai
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  4. T. A. Vijayan
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Correspondence to R. Chandramohan.

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Valanarasu, S., Chandramohan, R., Thirumalai, J. et al. Structural and electrochemical investigation of Zn-doped LiCoO2 powders. Ionics 18, 39–45 (2012). https://doi.org/10.1007/s11581-011-0607-6

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  • DOI: https://doi.org/10.1007/s11581-011-0607-6

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