Electrochemical device
AssigneeTDK Corporation
InventorsTetsuya Takahashi, Yoshihiko Ohashi
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Abstract
In an electrochemical device comprising a multilayer body having a separator and a pair of electrodes disposed so as to hold the separator therebetween, and an electrolyte infiltrated in the multilayer body; the electrodes contain an active material particle; the separator is made of a nonwoven fabric having an average fiber diameter Df of 0.1 to 1.0 μm; T≧5 μm and T/Df≧20, where T is the thickness of the separator; and Dp<T, where Dp is the average particle size of the active material particle.
Claims4
An electrochemical device comprising a multilayer body having a separator and a pair of electrodes disposed so as to hold the separator therebetween, and an electrolyte infiltrated in the multilayer body;
- wherein the electrodes contain an active material particle;
- wherein the separator is made of a nonwoven fabric having an average fiber diameter Df of 0.1 to 1.0 μm;
- wherein T≧5 μm and T/Df≧20, where T is the thickness of the separator, and
- wherein Dp<T, where Dp is the average particle size of the active material particle.
Dependencies are inferred from the claim text.