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Issue 7, 2013
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Interaction analysis between binder and particles in multiphase slurries

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Abstract

A multiphase slurry for rechargeable lithium-ion batteries is prepared using an active material, a carbon conductive, a polymeric binder and a solvent, and its physicochemical characteristics is evaluated in this study. The polymer binder interacting with particles in the slurry plays a crucial role in constructing the internal configuration of slurry components. The internal structure and dispersion states of the slurry components, which affect battery fabrication processes such as coating and even determine the final performance of battery cells, are changed over time. Experimental measurements such as spectroscopic, rheological, morphological, and electrical tests are carried out. Morphological specimens are freeze-dried to fix the locations of the slurry components. The existence of a network structure (or flocculation) is verified by viscoelastic property measurements and morphological observations. Electrical properties of the slurry vary mainly depending on the dispersion state of the carbon conductive. In addition, the dispersity index is introduced as a new quantity representing the dispersion state of the slurry components.

Graphical abstract: Interaction analysis between binder and particles in multiphase slurries

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Publication details

The article was received on 20 Nov 2012, accepted on 10 Jan 2013 and first published on 11 Jan 2013


Article type: Paper
DOI: 10.1039/C3AN36720G
Citation: Analyst, 2013,138, 2044-2050
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    Interaction analysis between binder and particles in multiphase slurries

    K. Y. Cho, Y. I. Kwon, J. R. Youn and Y. S. Song, Analyst, 2013, 138, 2044
    DOI: 10.1039/C3AN36720G

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