Effects of Mn(II) on nano silicon@polyaniline electrodes in both half and full cells

Haihui Chen*, Hanying Xu, Yingying Zeng*, Jinhua Cai, Limin Liu*, Tianyi Ma, Fang Wang, Xinping Qiu*

*Corresponding author for this work

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Abstract

In situ growing conductive polyaniline (PANi) has been regarded as a functional binder to enhance the performance of silicon based anodes in half cells, while few papers discussing the influence of Mn2+ from cathode on full cells. In this paper, the effects of Mn2+ on NSi@PANi electrodes in both half and full cells are investigated, and the mechanism for the fast capacity fade of LiMn2O4/NSi@PANi full cell is elucidated. Results reveal that the full cell will significant accelerate the capacity fade of NSi@PANi anode, and the extra consumption of active Li+ and electrolytes caused by the deposited Mn2+ on silicon anodes in lithium manganate (LMO)/NSi@PANi full cells is confirmed as the main reason of the capacity fade and lower coulombic efficiency for the excessive growth of solid electrolyte interphase.

Original languageEnglish
Pages (from-to)4357-4369
Number of pages13
JournalInternational Journal of Energy Research
Volume45
Issue number3
DOIs
Publication statusPublished - 10 Mar 2021
Externally publishedYes

Keywords

  • LMO full cell
  • Mn ion
  • capacity fade
  • lithium-ion battery
  • polyaniline
  • silicon electrode

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Chen, H., Xu, H., Zeng, Y., Cai, J., Liu, L., Ma, T., Wang, F., & Qiu, X. (2021). Effects of Mn(II) on nano silicon@polyaniline electrodes in both half and full cells. International Journal of Energy Research, 45(3), 4357-4369. https://doi.org/10.1002/er.6102