KR102524662B1 - 바인더 수지 조성물 및 이를 포함하는 전기화학소자용 분리막 - Google Patents
바인더 수지 조성물 및 이를 포함하는 전기화학소자용 분리막 Download PDFInfo
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Abstract
Description
도 1은 본 발명의 일 실시양태에 따른 분리막의 단면을 개략적으로 도식화하여 나타낸 것이다.
| 무기물 입자 Al2O3 (wt%) |
PVDF (wt%) |
PVP (wt%) |
PVP-PVAc (wt%) |
PVP-PVAc 모노머 비율(%) |
PVP-PVAc 분자량(Mw, g/mol) |
|
| 비교예 1 | 0 | 50 | 15 | 35 | 40:60 | 1000,000 |
| 비교예 2 | 90 | 0 | 3 | 7 | 40:60 | 1000,000 |
| 비교예 3 | 80 | 10 | 0 | 10 | 40:60 | 1000,000 |
| 비교예 4 | 80 | 10 | 10 | 0 | 0 | 0 |
| 실시예 1 | 80 | 10 | 3 | 7 | 40:60 | 800,000 |
| 실시예 2 | 80 | 10 | 3 | 7 | 40:60 | 1000,000 |
| 비교예 5 | 80 | 10 | 3 | 7 | 40:60 | 50,000 |
| 비교예 6 | 80 | 10 | 3 | 7 | 40:60 | 300,000 |
| 실시예 3 | 80 | 10 | 3 | 7 | 50:50 | 1000,000 |
| 실시예 4 | 80 | 10 | 3 | 7 | 20:80 | 1000,000 |
| 비교예 7 | 80 | 10 | 3 | 7 | 10:90 | 1000,000 |
| 비교예 8 | 80 | 10 | 3 | 7 | 80:20 | 1000,000 |
| 실시예 5 | 82 | 10 | 3 | 5 | 40:60 | 1000,000 |
| 실시예 6 | 77 | 10 | 3 | 10 | 40:60 | 1000,000 |
| 비교예 9 | 85 | 10 | 3 | 2 | 40:60 | 1000,000 |
| 비교예 10 | 72 | 10 | 3 | 15 | 40:60 | 1000,000 |
| 코팅층 두께 (㎛) |
로딩량 (g/cm2) |
통기도 (s/100cc) |
열수축율 (%, 150℃) (TD/MD) |
전극 접착력 (gf/25mm) |
|
| 비교예 1 | 양면 4㎛/4㎛ |
7.3 | 33590 | 0/0 | 231 |
| 비교예 2 | 양면 4㎛/4㎛ |
14.5 | 19736 | 0.4/0 | 7 |
| 비교예 3 | 양면 4㎛/4㎛ |
14.2 | 943 | 8.0/5.0 | 45 |
| 비교예 4 | 양면 4㎛/4㎛ |
14.0 | 1532 | 2.0/1.0 | 28 |
| 실시예 1 | 양면 4㎛/4㎛ |
13.4 | 832 | 2.1/1.9 | 89 |
| 실시예 2 | 양면 4㎛/4㎛ |
13.5 | 1150 | 1.0/0.7 | 70 |
| 비교예 5 | 양면 4㎛/4㎛ |
12.4 | 432 | 19.0/16.0 | 56 |
| 비교예 6 | 양면 4㎛/4㎛ |
12.8 | 512 | 15.0/10.0 | 88 |
| 실시예 3 | 양면 4㎛/4㎛ |
13.0 | 870 | 1.0/1.0 | 65 |
| 실시예 4 | 양면 4㎛/4㎛ |
13.4 | 932 | 5.0/3.6 | 90 |
| 비교예 7 | 양면 4㎛/4㎛ |
13.5 | 910 | 15.0/11.0 | 120 |
| 비교예 8 | 양면 4㎛/4㎛ |
13.4 | 831 | 1.0/0.7 | 33 |
| 실시예 5 | 양면 4㎛/4㎛ |
13.5 | 723 | 4.0/3.0 | 63 |
| 실시예 6 | 양면 4㎛/4㎛ |
13.0 | 1430 | 1.6/1.4 | 85 |
| 비교예 9 | 양면 4㎛/4㎛ |
14.2 | 367 | 12.0/9.0 | 41 |
| 비교예 10 | 양면 4㎛/4㎛ |
12.5 | 12530 | 0.7/0.4 | 167 |
Claims (10)
- 전기화학소자용 바인더 수지 조성물이며,
상기 바인더 수지 조성물은 PVDF계 고분자, 폴리비닐 피롤리돈(poly vinyl pyrrolidone, PVP) 및 PVP-PVAc 공중합체(Poly Vinyl pyrrolidone-Poly Vinyl Acetate copolymer)를 포함하며, 상기 바인더 수지 조성물 100 wt% 중 PVP-PVAc 공중합체의 함량은 3 wt% 내지 14 wt%인 것이고,
PVP-PVAc에서 PVAc 중합단위의 함량은 30wt% 내지 85wt% 이고,
상기 PVP-PVAc의 분자량(Mw, g/mol)은 800,000g/mol 이상이며,
상기 PVDF계 고분자는 상기 바인더 수지 조성물 100wt% 대비 1wt% 내지 50 wt%의 범위로 포함되는 것인 바인더 수지 조성물.
- 제1항에 있어서,
상기 PVP-PVAc에서 PVAc 중합단위의 함량은 50wt% 내지 80wt% 인 것인 바인더 수지 조성물.
- 제1항에 있어서,
상기 PVDF계 고분자는 불화비닐리덴 단독 중합체, PVDF-HFP, PVDF-CTFE 또는 이 중 둘 이상을 포함하는 것인 바인더 수지 조성물.
- 다공성 고분자 기재; 및 상기 다공성 고분자 기재의 적어도 일면에 형성된 다공성 코팅층;을 포함하는 분리막이며, 상기 다공성 코팅층은 무기물 입자 및 바인더 수지 조성물을 포함하고, 상기 바인더 수지 조성물은 제1항에 따른 것이며,
상기 분리막은 상기 바인더 수지 조성물을 포함하는 다공성 코팅층 형성용 슬러리가 상대 습도 30% 내지 70% 조건 하에서 고화되어 형성된 것인 전기화학소자용 분리막.
- 제4항에 있어서,
상기 무기물 입자는 BaTiO3, Pb(Zr,Ti)O3 (PZT), b1-xLaxZr1-yTiyO3(PLZT, 0<x<1, 0<y<1), Pb(Mg1/3Nb2/3)O3-PbTiO3(PMN-PT), 하프니아(HfO2), SrTiO3, SnO2, CeO2, MgO, NiO, CaO, ZnO, ZrO2, SiO2, Y2O3, Al2O3, SiC, TiO2 또는 이 중 둘 이상을 포함하는 것인 전기화학소자용 분리막.
- 제4항에 있어서,
상기 다공성 코팅층에서, 바인더 수지 조성물과 무기물 입자의 합 100wt% 대비 바인더 수지 조성물은 0.1wt% 내지 80wt%의 범위로 포함되는 것인 전기화학소자용 분리막.
- 양극, 음극 및 상기 양극과 음극 사이에 개재되는 분리막을 포함하며, 상기 분리막은 제4항에 따른 것인 전기화학소자.
- 제4항에 따른 분리막을 제조하는 방법이며,
바인더 수지 조성물을 용매에 용해하여 고분자 용액을 준비하는 단계;
상기 고분자 용액에 무기물 입자를 투입하고 혼합하여 다공성 코팅층 형성용 슬러리를 준비하는 단계;
상기 다공성 코팅층 형성용 슬러리를 다공성 기재 위에 도포하는 단계; 및
상기 슬러리가 도포된 다공성 코팅층 형성용 슬러리를 상대 습도 30% 내지 70%의 조건 하에서 건조시키는 단계를 포함하는 분리막 제조 방법.
- 삭제
- 삭제
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| Application Number | Priority Date | Filing Date | Title |
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| KR1020190054534A KR102524662B1 (ko) | 2019-05-09 | 2019-05-09 | 바인더 수지 조성물 및 이를 포함하는 전기화학소자용 분리막 |
| HUE20802675A HUE063520T2 (hu) | 2019-05-09 | 2020-04-29 | Kötõgyanta készítmény és az azt tartalmazó szeparátor elektrokémiai berendezéshez |
| JP2021559588A JP7278410B2 (ja) | 2019-05-09 | 2020-04-29 | バインダー樹脂組成物及びこれを含む電気化学素子用の分離膜 |
| PL20802675.7T PL3958344T3 (pl) | 2019-05-09 | 2020-04-29 | Kompozycja żywicy wiążącej i separator do urządzenia elektrochemicznego zawierający tę żywicę |
| PCT/KR2020/005786 WO2020226367A1 (ko) | 2019-05-09 | 2020-04-29 | 바인더 수지 조성물 및 이를 포함하는 전기화학소자용 분리막 |
| EP20802675.7A EP3958344B1 (en) | 2019-05-09 | 2020-04-29 | Binder resin composition and separator for electrochemical device comprising the same |
| CN202080027322.9A CN113661221B (zh) | 2019-05-09 | 2020-04-29 | 粘合剂树脂组合物和包括该粘合剂树脂组合物的用于电化学装置的隔板 |
| ES20802675T ES2961292T3 (es) | 2019-05-09 | 2020-04-29 | Composición de resina aglutinante y separador para dispositivo electroquímico que comprende la misma |
| US17/609,617 US12438232B2 (en) | 2019-05-09 | 2020-04-29 | Binder resin composition and separator for electrochemical device comprising the same |
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| JP7754570B2 (ja) * | 2021-10-06 | 2025-10-15 | エルジー エナジー ソリューション リミテッド | 二次電池用分離膜 |
| CN116979045B (zh) * | 2023-08-15 | 2024-12-10 | 洛阳理工学院 | 一种复合氧化亚硅负极材料及其制备方法和应用 |
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| US20220220294A1 (en) | 2022-07-14 |
| JP2022528708A (ja) | 2022-06-15 |
| EP3958344A1 (en) | 2022-02-23 |
| US12438232B2 (en) | 2025-10-07 |
| CN113661221B (zh) | 2022-12-27 |
| KR20200129718A (ko) | 2020-11-18 |
| HUE063520T2 (hu) | 2024-01-28 |
| CN113661221A (zh) | 2021-11-16 |
| PL3958344T3 (pl) | 2024-01-22 |
| JP7278410B2 (ja) | 2023-05-19 |
| ES2961292T3 (es) | 2024-03-11 |
| EP3958344B1 (en) | 2023-09-27 |
| EP3958344A4 (en) | 2022-06-08 |
| WO2020226367A1 (ko) | 2020-11-12 |
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