Conductive Binder for Si Anode with Boosted Charge Transfer Capability via n‑Type Doping

Employing conductive binders in silicon (Si) anode has been considered as a fundamental solution to the pulverization of Si particles. Therefore, it is still a great challenge to improve the charge transfer capability of the conductive binder. Herein, a copolymer (PFPQ-COONa) is synthesized, charact...

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Bibliographic Details
Published in:ACS applied materials & interfaces 2018-08, Vol.10 (33), p.27795-27800
Main Authors: Zhao, Yan, Yang, Luyi, Zuo, Yunxing, Song, Zhibo, Liu, Fang, Li, Ke, Pan, Feng
Format: Article
Language:English
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Summary:Employing conductive binders in silicon (Si) anode has been considered as a fundamental solution to the pulverization of Si particles. Therefore, it is still a great challenge to improve the charge transfer capability of the conductive binder. Herein, a copolymer (PFPQ-COONa) is synthesized, characterized, and electrochemically tested as conductive binder for Si anode. It is found that PFPQ-COONa exhibits not only excellent cycling stability, but also satisfactory rate performance with relatively high areal loading, which outperforms currently reported single-component conductive binders. The superior electrochemical performance can be attributed to the molecular-level contact between binder and Si particles and to the enhanced intrinsic conductivity of PFPQ-COONa at reductive potential. This method provides a fresh perspective to design and develop conductive binder for high-capacity battery anode.
ISSN:1944-8244
1944-8252
DOI:10.1021/acsami.8b08843