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Enhancing battery performance by nano Si addition to Li4Ti5O12 as anode material on lithium-ion battery

  • Sarah Alya Firnadya
  • Anne Zulfia Syahrial
  • Achmad Subhan
Original Paper
  • 107 Downloads

Abstract

The lithium-ion battery is a battery that is being developed to become a repository of energy, particularly for electric vehicles. Lithium titanate (Li4Ti5O12) anodes are quite promising for this application because of its zero-strain properties so it can withstand the high rate. However, the capacity of LTO (Li4Ti5O12) is still relatively low. Therefore, the LTO needs to be combined with other materials that have high capacity such as Si. Silicon has a very high capacity which is 4200 mAh/g, but it has a high volume of the expansion. Nano-size can also help increase the capacity. Therefore composite of LTO/nano Si is made to create an anode with a high capacity and also stability. Nano Si is added with a variation of 1, 5, and 10%. LTO/nano Si composite is characterized using XRD, SEM-EDX, and TEM-EDX. Then, to determine the battery performance, EIS, CV, and CD tests were conducted. From those tests, it is studied that Si improves the conductivity of the anode, but not significantly. The addition of Si results a greater battery capacity which is 262.54 mAh/g in the LTO-10% Si. Stability of composite LTO/nano Si is good, evidenced by the coulomb efficiency at the high rate of close to 100%.

Keywords

Li4Ti5O12/nano Si composite Li4Ti5O12 Nano Si Li-ion battery 

Notes

Acknowledgements

The author would like to thank Directorate Research and Public Services Universitas Indonesia for their financial support to do this research under HIBAH PITTA 2017 with contract no. 736/UN2.R3.1/HKP.05.00/2017.

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Copyright information

© Springer-Verlag GmbH Germany 2017

Authors and Affiliations

  • Sarah Alya Firnadya
    • 1
  • Anne Zulfia Syahrial
    • 1
  • Achmad Subhan
    • 2
  1. 1.Department of Metallurgy and Materials, Faculty of EngineeringUniversitas IndonesiaDepokIndonesia
  2. 2.Center for Research of Physics, LIPITangerangIndonesia

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