Advertisement

Effect of Composite Electrode Slurry Preparation Method on Electrochemical Characteristics of LiFePO4/C Based Li-ion Cell

  • A. Srinivas Kumar
  • T. Venugopala Rao
  • Prerana Priydarshini
  • T. V. S. L. SatyavaniEmail author
  • Shashikant
Conference paper
Part of the Springer Proceedings in Physics book series (SPPHY, volume 215)

Abstract

LiFePO4 is a potential cathode material for its application in Li-ion batteries to provide high energy density, high power density and flat discharge voltage which are the basic requirements of underwater electric vehicles. It is non toxic, low cost, safe and environmentally benign material with high operating voltage (~3.4 V vs. Li). Although it has a high specific theoretical capacity (170 mAh/g), its discharge capacity is highly influeced by the method of preparation and mixing sequence of the ingredients of composite slurry for coating of electrode. In the present work, the electrode slurry is prepared by two different methods namely conventional method and conductive glue method. CR2032 coin cells in half cell configuration are fabricated using the electrodes prepared by both these methods. Electrochemical characterization of these half cells is carried out using cyclic voltammetry, AC-impedance, charge-discharge characteristics and specific capacity studies. It is found that coin cells made of electrodes prepared by conductive glue method provided higher capacities and less fading of capacity with cycles. It is opined that the conductive glue method helps in forming the electronic conductive network with uniform distribution of carbon additive around the active material resulting in homogeneous mixing of electrode slurry and quality coating thereby improving cell capacity and lower fade outs of capacity.

Notes

Acknowledgements

We wish to acknowledge Sri. Kirtan Sahoo, Scientist-E and Sri. M. Srinivas, Scientist-D for their support and constant encouragement to carry out this work.

References

  1. 1.
    A.K. Padhi, K.S. Nanjundaswamy, J.B. Goodenough, Phospho-olivines as positive-electrode materials for rechargeable lithium batteries. J. Electrochem. Soc. 144(4), 1188–1194 (1997)CrossRefGoogle Scholar
  2. 2.
    X.L. Li, Y.L. Zhang, H.F. Song, K. Du, H. Wang, H.Y. Li, J.M. Huang, The comparison of carbon conductive additives with different dimensions on the electrochemical performance of LiFePO4 cathode. J. Electrochem. Sci. 77, 111–120 (2012)ADSGoogle Scholar
  3. 3.
    R. Dominko, M. Gaberscek, J. Drofenik, M. Bele, S. Pejovnik, J. Jamnik, The role of carbon black distribution in cathodes for Li ion batteries. J. Power Sources 119–121, 770–773 (2003)CrossRefGoogle Scholar
  4. 4.
    H.C. Shin, W.I. Cho, H. Jang, Electrochemical properties of the carbon-coated LiFePO4 as a cathode material for lithium-ion secondary batteries. J. Power Sources 159(2), 1383–1388 (2006)ADSCrossRefGoogle Scholar
  5. 5.
    G. Liu, H. Zheng, S. Kim, Y. Deng, A.M. Minor, X. Song, V.S. Battaglia, Effect of various conductive additive and polymeric binder contents on the performance of a lithium–ion composite cathode. J. Electrochem. Soc. 155(12), A887–A892 (2008)CrossRefGoogle Scholar
  6. 6.
    Y.W. Chen, J.S. Chen, A study of electrochemical performance of LiFePO4/C composites doped with Na and V. Int. J. Electrochem. Sci. 7, 8128–8139 (2012)Google Scholar
  7. 7.
    D. Liu, L. Chen, T. Liu, T. Fan, E. Tsou, C. Tiu, An effective mixing for lithium ion battery slurries. Adv. Chem. Engg Sci. 4, 515–528 (2014)CrossRefGoogle Scholar
  8. 8.
    A.V. Bommel, R. Divigalpitiya, Effect of calendaring LiFePO4 electrodes. J. Electrochem. Soc. 159(11), A1791–A1795 (2012)CrossRefGoogle Scholar

Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  • A. Srinivas Kumar
    • 1
  • T. Venugopala Rao
    • 1
  • Prerana Priydarshini
    • 1
  • T. V. S. L. Satyavani
    • 1
    Email author
  • Shashikant
    • 1
  1. 1.N.S.T.L.VisakhapatnamIndia

Personalised recommendations