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Open Access Publications from the University of California

Investigating the doping mechanism of pyrene based methacrylate functional conductive binder in silicon anodes for lithium-ion batteries

  • Author(s): Ling, M
  • Liu, M
  • Zheng, T
  • Zhang, T
  • Liu, G
  • et al.

© The Author(s) 2017. Published by ECS. All rights reserved. The doping mechanism of poly (1-pyrenemethyl methacrylate) (PPy) is investigated through electrochemical analytical and spectroscopic method. The performance of PPy as a Si materials binder is studied and compared with that of a commercial available lithium polyacrylate (PAALi) binder. The pyrene moiety consumes lithium ions according to the cyclic voltammogram (CV) measurement, as a doping to the PPy binder. Based on the lithium consumption, PPy based Si/graphite electrode doping is quantified at 1.1 electron/pyrene moiety. The PPy binder based electrodes surface are uniform and crack free during lithiation/delithiation, which is revealed through Scanning electron microscope (SEM) imaging.

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