期刊
ACS APPLIED MATERIALS & INTERFACES
卷 10, 期 33, 页码 27795-27800出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.8b08843
关键词
Li-ion battery; Si anode; conductive binder; n-type doping; rate capability
资金
- National Materials Genome Project [2016YFB0700600]
- Guangdong Innovation Team Project [2013N080]
- Shenzhen Science and Technology Research Grant (peacock plan) [KYPT20141016105435850, JCYJ20151015162256516, JCYJ20150729111733470]
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.
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