Lawrence Berkeley National Laboratory
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.
Published Web Locationhttps://doi.org/10.1149/2.0011704jes
© 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.