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Interaction between Poly(vinylidene fluoride) Binder and Graphite in the Anode of Lithium Ion Batteries: Rheological Properties and Surface Chemistry

Published online by Cambridge University Press:  01 February 2011

Mikyong Yoo  and
Curtis W. Frank
Mikyong Yoo
Affiliation:
Department of Materials Science and Engineering
Curtis W. Frank
Affiliation:
Department of Materials Science and Engineering Department of Chemical Engineering, Stanford University, Stanford, CA 94305
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Abstract

We describe here the interaction of poly(vinylidene fluoride) (PVDF) with graphite based on the rheological behavior of the slurries and the surface morphology of PVDF in the final composite anode. The rheological properties of slurries show the interaction between graphite and PVDF with the viscosity varying over six orders of magnitude for different graphite particles. We correlated the suspension viscosity with the final film properties. The homogeneity of the PVDF distribution in the final composite film increases as the slurry viscosity increases. The interaction between graphite and PVDF is altered through the chemical properties of polymer such as molecular weight and functionality, leading to an improved morphology of PVDF.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 730: Symposium V – Materials for Energy Storage, Generation, and Transport , 2002 , V5.17
Copyright
Copyright © Materials Research Society 2002

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