SOLVENT-FREE ELECTRODE FABRICATION

摘要

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.

主权项

1. A method for forming an energy storing device, comprising the steps of:
a) forming an aqueous binder dispersion composition; b) adding said aqueous binder dispersion to one or more types of dry active powdery electrode-forming materials to form a uniform blend, and c) applying said uniform blend to at least one surface of an electroconductive substrate to form an electrode.