KR20210029294A - 리튬 이온 이차 전지용 다층 하이브리드 전지 분리기 및 이의 제조방법 - Google Patents
리튬 이온 이차 전지용 다층 하이브리드 전지 분리기 및 이의 제조방법 Download PDFInfo
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- KR20210029294A KR20210029294A KR1020217006681A KR20217006681A KR20210029294A KR 20210029294 A KR20210029294 A KR 20210029294A KR 1020217006681 A KR1020217006681 A KR 1020217006681A KR 20217006681 A KR20217006681 A KR 20217006681A KR 20210029294 A KR20210029294 A KR 20210029294A
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- separator
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- 238000000034 method Methods 0.000 title claims description 47
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title description 7
- 229910001416 lithium ion Inorganic materials 0.000 title description 7
- 239000012528 membrane Substances 0.000 claims abstract description 66
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- 230000015556 catabolic process Effects 0.000 claims abstract description 10
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- 229920005989 resin Polymers 0.000 claims abstract description 7
- 239000011347 resin Substances 0.000 claims abstract description 7
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 4
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- H01L2224/95—Batch processes at chip-level, i.e. with connecting carried out on a plurality of singulated devices, i.e. on diced chips
- H01L2224/96—Batch processes at chip-level, i.e. with connecting carried out on a plurality of singulated devices, i.e. on diced chips the devices being encapsulated in a common layer, e.g. neo-wafer or pseudo-wafer, said common layer being separable into individual assemblies after connecting
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Abstract
Description
도 1은 건식 공정 마이크로다공성 분리기 멤브레인(종래 기술)의 사진(주사 전자 현미경, SEM)을 나타낸다.
도 2는 습식 공정 마이크로다공성 분리기 멤브레인(종래 기술)의 사진(SEM)을 나타낸다.
도 3은 하이브리드(hybrid) 마이크로다공성 다층 분리기 멤브레인(본 발명)의 사진(SEM, 3300x)을 나타낸다.
도 4는 본 발명 분리기의 전기 저항(ER) 서모그램(thermogram)을 비교 특허 예 CE2와 비교한 그래프이다.
2층 | 2층 | 3층 | 3층 | 3층 | 3층 | 단층 베이스 필름 | |||
제품 | Ex. 1 | Ex. 2 | Ex. 3 | Ex. 4 | CE 1 | CE 2 | PE 1 (습식) |
PE2 (습식) |
PP (건식) |
T의 비율 PP:PE 또는 PP:PE:PP |
8:12 | 8:16 | 8:12:8 | 8:16:8 | 12:12:12 | 8:8:8 | na | na | na |
사용된 PE 단층 | PE1 | PE2 | PE1 | PE2 | na | na | na | na | na |
두께, ㎛ | 18.3 | 21.1 | 30.4 | 33.1 | 38.8 | 25 | 12.3 | 15.6 | 8.3 |
BW, mg/㎠ | 1.02 | 1.29 | 1.49 | 1.73 | 2.2 | 1.4 | 0.65 | 0.87 | 0.43 |
Gurley(ASTM), sec | 23.6 | 43.9 | 33.0 | 34.5 | 30 | 25 | 5.0 | 10.4 | 16.4 |
% MD 수축률 @ 90℃ | 6.6 | 5.7 | 7.7 | 6.6 | 4.4 | 8.4 | 2.0 | 2.0 | 13.3 |
% MD 수축률 @ 105℃ | 17.6 | 15.3 | 19.8 | 18.1 | 13.2 | 5.0 | 2.8 | 2.9 | 26.7 |
% TD 수축률 @ 90℃ | 0.3 | -0.3 | -0.96 | -0.81 | -0.37 | -0.23 | 1.3 | -0.09 | -0.98 |
% TD 수축률 @ 105℃ | 0.3 | 0.2 | 0.51 | -0.58 | -0.76 | -0.7 | 2.6 | 0.8 | -1.3 |
천공강도, gf | 710 | 836 | 812 | 978 | 622 | 380 | 487 | 514 | 201 |
인장강도 MD, kgf/㎠ | 2079 | 1700 | 1735 | 1528 | 1281 | 1700 | 1957 | 1488 | 1334 |
인장강도 TD, kgf/㎠ | 955 | 1062 | 683 | 792 | 125 | 150 | 1505 | 1620 | 100 |
ER mohm/㎠ | na | 2.46 | 3.15 | 2.6 | 2.2 | 1.08 | 1.41 | 1.02 | |
절연 파괴 전압, V | 2247 | 2637 | 3568 | 4191 | 4455 | 3522 | 1560 | 1923 | 470 |
Claims (22)
- 습식 가공된 멤브레인의 제2층에 접합되는 건식 가공된 멤브레인의 제1층을 포함하는 리튬 이차 전지용 다층 전지 분리기.
- 제1항에 있어서,
상기 제1층은 폴리프로필렌계 수지로 제조되는 분리기. - 제2항에 있어서,
상기 폴리프로필렌계 수지는 폴리프로필렌 또는 폴리프로필렌을 함유하는 블렌드인 분리기. - 제1항에 있어서,
상기 제2층은 폴리에틸렌계 수지로 제조되는 분리기. - 제4항에 있어서,
상기 폴리에틸렌계 수지는 폴리에틸렌 또는 폴리에틸렌을 함유하는 블렌드인 분리기. - 제1항에 있어서,
2개 초과의 층을 갖는 분리기. - 제6항에 있어서,
폴리프로필렌 층/폴리에틸렌 층/폴리프로필렌 층의 구성을 갖는 분리기. - 제6항에 있어서,
건식 가공된 멤브레인/습식 가공된 층/건식 가공된 층의 구성을 갖는 분리기. - 제1항에 있어서,
약 1.5-3.0 범위의 TD/MD 인장 강도 비율을 갖는 분리기. - 제1항에 있어서,
약 1.6-2.5 범위의 TD/MD 인장 강도 비율을 갖는 분리기. - 제1항에 있어서,
약 1.8-2.2 범위의 TD/MD 인장 강도 비율을 갖는 분리기. - 제1항에 있어서,
약 35.0 마이크론 이하의 두께를 갖는 분리기. - 제1항에 있어서,
약 5.0-30.0 마이크론 범위의 두께를 갖는 분리기. - 제1항에 있어서,
약 5.0-26.0 마이크론 범위의 두께를 갖는 분리기. - 제1항에 있어서,
약 630 gf 초과의 천공 강도를 갖는 분리기. - 제1항에 있어서,
약 630-1500 gf 범위의 천공 강도를 갖는 분리기. - 제1항에 있어서,
적어도 약 2000 V의 절연 파괴 전압을 갖는 분리기. - 제1항에 있어서,
약 2000-5000 V 범위의 절연 파괴 전압을 갖는 분리기. - 습식 가공된 멤브레인의 제2폴리에틸렌계 수지층에 접합되는 건식 가공된 멤브레인의 제1폴리프로필렌계 수지층을 적어도 포함하고, 약 1.5-3.0 범위의 TD/MD 인장 강도 비율, 약 35.0 마이크론 이하의 두께, 약 630 gf 초과의 천공 강도, 및 적어도 약 2000 V의 절연 파괴 전압을 갖는 리튬 이차 전지용 다층 전지 분리기.
- 제19항에 있어서,
적어도 3개의 층을 갖는 분리기. - 습식 가공된 멤브레인의 제2층에 접합되는 건식 가공된 멤브레인의 제1층을 포함하는 다층 멤브레인.
- 습식 가공된 멤브레인의 제2층의 제1면에 접합되는 건식 가공된 멤브레인의 제1층, 및 제2층의 제2면에 접합되는 건식 가공된 멤브레인의 제3층을 포함하는 3개의 층을 포함하는 다층 멤브레인.
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2014
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- 2014-03-14 JP JP2016502299A patent/JP2016516279A/ja active Pending
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- 2014-03-14 CN CN201811466451.9A patent/CN109360927A/zh active Pending
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- 2014-03-14 US US14/210,507 patent/US9455432B2/en active Active
- 2014-03-14 KR KR1020217006681A patent/KR20210029294A/ko not_active Ceased
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JP2019054003A (ja) | 2019-04-04 |
JP7483562B2 (ja) | 2024-05-15 |
US11626349B2 (en) | 2023-04-11 |
US9455432B2 (en) | 2016-09-27 |
US9899298B2 (en) | 2018-02-20 |
WO2014152130A1 (en) | 2014-09-25 |
US10601012B1 (en) | 2020-03-24 |
CN110767864A (zh) | 2020-02-07 |
US20140272533A1 (en) | 2014-09-18 |
CN105122502A (zh) | 2015-12-02 |
CN109360927A (zh) | 2019-02-19 |
JP2016516279A (ja) | 2016-06-02 |
JP2020198316A (ja) | 2020-12-10 |
US20170092567A1 (en) | 2017-03-30 |
KR20150128973A (ko) | 2015-11-18 |
US20200219796A1 (en) | 2020-07-09 |
KR102226140B1 (ko) | 2021-03-11 |
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