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US 10,756,319 B2Granted
Method for manufacturing separator, separator manufactured therefrom and method for manufacturing electrochemical device having the same
AssigneesLG Chem, Ltd., Toray Industries, Inc.
InventorsJoo-Sung Lee, Jang-Hyuk Hong, Jong-Hun Kim
Life of this patent
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Abstract
Disclosed is a method for manufacturing a separator for an electrochemical device. The method contributes to formation of a separator with good bondability to electrodes and prevents inorganic particles from detaching during an assembling process of an electrochemical device.
Claims14
A separator, comprising:
- a porous substrate;
- an organic-inorganic composite inner layer disposed on at least one surface of the porous substrate, and comprising a first binder polymer and inorganic particles;
- and
- a porous polymer outer layer disposed on a surface of the organic-inorganic composite inner layer, and consisting of a second binder polymer,
- wherein a loading amount of the second binder polymer in the porous polymer outer layer ranges from 0.1 to 3. 0 g/m2 for controlling porosity and bondability of the separator,
- wherein the organic-inorganic composite inner layer has pores or interstitial volumes formed between the inorganic particles.
3 more elements
Dependencies are inferred from the claim text.