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US 2019/0245184 A1Published application
Separator and battery
AssigneeMurata Manufacturing Co., Ltd.
InventorsKazuki CHIBA, Atsushi KAJITA, Yukako TESHIMA, Masatake HAYASHI
Life of this patent
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Abstract
A separator includes a first layer that has a first principal face and a second principal face, and a second layer that is formed on at least one of the first principal face and the second principal face. The first layer is a microporous membrane including a first polymer resin, and the second layer is a microporous membrane including inorganic particles having an electrically insulating property and a second polymer resin.
Claims25
A battery comprising:
- a positive electrode;
- a negative electrode;
- an electrolyte;
- and
- a separator,
- wherein the separator includes
- a first resin layer having a first principal face and a second principal face, and
- a second resin layer provided on at least one of the first principal face and the second principal face;
- wherein the second resin layer includes inorganic particles,
- wherein an average particle diameter D20 of the inorganic particles is larger than an average pore diameter of pores opening onto a surface of the first resin layer,
- wherein the average particle diameter D20 of the inorganic particles ranges from 0.13 μm to 2.10 μm.
8 more elements
A separator comprising:
- a first resin layer having a first principal face and a second principal face, and
- a second resin layer provided on at least one of the first principal face and the second principal face;
- wherein the second resin layer includes inorganic particles,
- wherein an average particle diameter D20 of the inorganic particles is larger than an average pore diameter of pores opening onto a surface of the first resin layer,
- wherein the average particle diameter D20 of the inorganic particles ranges from 0.13 μm to 2.10 μm.
2 more elements
Dependencies are inferred from the claim text.