Single fiber layer structure of micron or nano fibers and multi-layer structure of micron and nano fibers applied in separator for battery

摘要

A single fiber layer structure of micron or nano fibers, and a multi-layer structure of micron and nano fibers are provided. The single fiber layer structure of micron fibers comprises a web of micron fibers and an impregnating resin, and has a pore size of 1 nm-500 nm. The web of micron fibers is formed by plural interweaved micron fibers (D≧1 μm). The single fiber layer structure of nano fibers comprises a web of nano fibers formed by plural interweaved nano fibers (D<1 μm). The multi-layer structure of micron and nano fibers comprises a web of interweaved micron fibers, a web of nano fibers formed by plural nano fibers interweaved on the web of micron fibers, a mixture layer formed by parts of the interweaved nano and micron fibers, and a resin at least impregnating the mixture layer and parts of the micron fibers of the web of micron fibers.

主权项

1. A multi-layer structure of micron and nano fibers applied in a battery, comprising:
a web of micron fibers formed by a plurality of interweaved micron fibers whose diameter is greater than or equal to 1 μm; a web of nano fibers formed by a plurality of nano fibers interweaved on the web of micron fibers, wherein the plurality of nano fibers have a diameter less than 1 μm; a mixture layer of fibers located between the web of nano fibers and the web of micron fibers, wherein the mixture layer of fibers comprises parts of the plurality of interweaved nano and micron fibers; and a resin at least impregnating the mixture layer of fibers and parts of the plurality of micron fibers of the web of micron fibers.