Porous Separator for a Secondary Battery Including Cellulose Nanofibers and Method For Manufacturing Same
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United States of America Patent
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Issued Date -
Nov 13, 2014
app pub date -
Dec 8, 2011
filing date -
Nov 30, 2011
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Abandoned
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Abstract
The present invention relates to a separator for secondary battery including cellulose nanofibers, and to a method for fabricating the same. The separator has a porous structure of micropores formed between the cellulose nanofibers. The porous structure has a porosity of 10 to 80% (v/v) and a pore size of 0.01 to 10 μm. The separator has a thickness of 5 to 30 μm. The separator has good properties in regards to thermal stability, dimensional stability, wettability, and electrochemical stability, and the fabrication process can be simplified to reduce the production cost.
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