KR20140102650A - 적층 다공질 필름 및 그 제조 방법, 그리고 비수 전해액 2 차 전지용 세퍼레이터, 적층 전극 시트 및 비수 전해액 2 차 전지 - Google Patents
적층 다공질 필름 및 그 제조 방법, 그리고 비수 전해액 2 차 전지용 세퍼레이터, 적층 전극 시트 및 비수 전해액 2 차 전지 Download PDFInfo
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- KR20140102650A KR20140102650A KR1020147013073A KR20147013073A KR20140102650A KR 20140102650 A KR20140102650 A KR 20140102650A KR 1020147013073 A KR1020147013073 A KR 1020147013073A KR 20147013073 A KR20147013073 A KR 20147013073A KR 20140102650 A KR20140102650 A KR 20140102650A
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- Prior art keywords
- porous film
- inorganic filler
- laminated
- filler
- layer
- Prior art date
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- H01M10/052—Li-accumulators
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Abstract
Description
Claims (9)
- 바인더 수지 및 필러를 함유하는 내열층과, 폴리올레핀을 주성분으로서 함유하는 기재 다공질 필름이 적층된 적층 다공질 필름으로서,
상기 내열층에 함유되는 필러가, 1 차 입자경이 0.2 ∼ 1 ㎛ 인 무기 필러 (a) 와 1 차 입자경이 0.01 ∼ 0.1 ㎛ 인 무기 필러 (b) 로 실질적으로 이루어지고,
상기 내열층에 있어서의 무기 필러 (b) 의 2 차 응집체의 입자경이 무기 필러 (a) 의 1 차 입자경의 2 배 이하인, 적층 다공질 필름. - 제 1 항에 있어서,
상기 무기 필러 (a) 와 상기 무기 필러 (b) 의 체적비가 80/20 ∼ 99/1 인, 적층 다공질 필름. - 제 1 항 또는 제 2 항에 있어서,
상기 무기 필러 (a) 가, 복수 개의 1 차 입자가 고착된 형태의 비구상의 연결 입자를 주성분으로서 함유하는, 적층 다공질 필름. - 제 1 항 내지 제 3 항 중 어느 한 항에 있어서,
상기 무기 필러 (a) 및 상기 무기 필러 (b) 의 양방이 알루미나인, 적층 다공질 필름. - 제 1 항 내지 제 4 항 중 어느 한 항에 있어서,
상기 바인더 수지가 수용성 폴리머인, 적층 다공질 필름. - 제 1 항 내지 제 5 항 중 어느 한 항에 기재된 적층 다공질 필름의 제조 방법으로서,
무기 필러 (a) 와 기상법에 의해 제조된 무기 필러 (b), 바인더 수지 및 용매를 함유하는 도공액을, 상기 기재 다공질 필름의 표면에 도공하고, 이어서 용매를 제거함으로써 상기 기재 다공질 필름의 표면에 내열층을 형성하는, 적층 다공질 필름의 제조 방법. - 제 1 항 내지 제 5 항 중 어느 한 항에 기재된 적층 다공질 필름을 세퍼레이터로서 포함하는, 비수 전해액 2 차 전지.
- 바인더 수지 및 필러를 함유하는 내열층과 전극 시트가 적층된 적층 전극 시트로서,
상기 내열층에 함유되는 필러가 1 차 입자경이 0.2 ∼ 1 ㎛ 인 무기 필러 (a) 와 1 차 입자경이 0.01 ∼ 0.1 ㎛ 인 무기 필러 (b) 로 실질적으로 이루어지고,
상기 내열층에 있어서의 무기 필러 (b) 의 2 차 응집체의 입자경이 무기 필러 (a) 의 1 차 입자경의 2 배 이하인, 적층 전극 시트. - 제 8 항에 기재된 적층 전극 시트를 포함하는, 비수 전해액 2 차 전지.
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JP2012060761 | 2012-03-16 | ||
PCT/JP2012/078001 WO2013073362A1 (ja) | 2011-11-18 | 2012-10-30 | 積層多孔質フィルム及びその製造方法、並びに非水電解液二次電池用セパレータ、積層電極シート及び非水電解液二次電池 |
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US10211442B2 (en) | 2015-11-27 | 2019-02-19 | Sumitomo Chemical Company, Limited | Nonaqueous electrolyte secondary battery insulating porous layer and nonaqueous electrolyte secondary battery laminated separator |
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US20140302389A1 (en) | 2014-10-09 |
WO2013073362A1 (ja) | 2013-05-23 |
CN103946023A (zh) | 2014-07-23 |
JP2017001402A (ja) | 2017-01-05 |
KR20190065468A (ko) | 2019-06-11 |
CN109378428A (zh) | 2019-02-22 |
KR102087564B1 (ko) | 2020-03-10 |
JPWO2013073362A1 (ja) | 2015-04-02 |
JP6017446B2 (ja) | 2016-11-02 |
JP6185133B2 (ja) | 2017-08-23 |
TW201338247A (zh) | 2013-09-16 |
KR102144598B1 (ko) | 2020-08-13 |
US10147923B2 (en) | 2018-12-04 |
US20190020007A1 (en) | 2019-01-17 |
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