Solvent-free electrode fabrication
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United States of America Patent
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Jul 7, 2020
Grant Date -
May 4, 2017
app pub date -
Jun 3, 2015
filing date -
Jun 3, 2014
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Abstract
The invention relates to an electrode formed by the blending of dry active powdery electrode forming materials with an aqueous binder dispersion, and the subsequent adhering of the wet binder/dry active powdery electrode-forming materials blend to an electroconductive substrate, resulting in an electrode. The aqueous binder is preferably a fluoropolymer, and more preferably polyvinylidene fluoride (PVDF). The hybrid process provides the good dispersion and small particle size of a wet process, with the energy savings and reduced environmental impact of a dry process. The resulting electrode is useful in energy-storage devices.
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