KR20200052830A - 고분자 고체 전해질, 이의 제조방법 및 전기화학적 셀 - Google Patents
고분자 고체 전해질, 이의 제조방법 및 전기화학적 셀 Download PDFInfo
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- KR20200052830A KR20200052830A KR1020190134352A KR20190134352A KR20200052830A KR 20200052830 A KR20200052830 A KR 20200052830A KR 1020190134352 A KR1020190134352 A KR 1020190134352A KR 20190134352 A KR20190134352 A KR 20190134352A KR 20200052830 A KR20200052830 A KR 20200052830A
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Images
Classifications
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Abstract
상기 식에서, R1은 하기의 군 중 하나일 수 있다:
,
상기 식에서 n은 1 내지 10,000 범위 내의 정수이고, m은 1 내지 5,000 범위 내의 정수이고, R2 내지 R6는 각각 독립적으로 다음의 구조 중 하나일 수 있다:
.
Description
도 1은 본 발명의 일 구현예에 따른 고분자 고체 전해질의 기계적인 성능 시험 곡선을 설명한다;
도 2는 본 발명의 또 다른 구현예에 따른 고분자 고체 전해질의 이온 전도도 곡선을 설명한다;
도 3은 본 발명의 일부 구현예에 따른, 특정 화학 구조의 고분자를 설명한다;
도 4는 본 발명의 특정 구현예의 고분자 고체 전해질의 이온 전도도 곡선을 설명한다;
도 5는 본 발명의 일 구현예에 따른 고분자의 합성에 대한 반응식이다;
도 6은 본 발명의 또 다른 구현예에 따른 고분자의 합성에 대한 반응식이다;
도 7은 비교예의 합성에 대한 반응식이다.
도 8은 본 개시의 일부 구현예에 따른 고분자 고체 전해질의 사이클링 성능 곡선을 설명한다.
도 9는 본 개시의 또다른 구현예의 고분자 고체 전해질의 이온 전도도 곡선을 설명한다.
| 실시예/ 비교예 |
리튬 염 | 가소제 | 고분자, 가소제, 리튬 염의 몰 비율 | 인장 강도 (MPa) |
이온 전도도 (S/cm) |
분해 전압 (V) |
| 실시예 1 | LiTFSI | SN | 1:3:1 | 19.2 | 3.3x10-4 | 4.3 |
| 실시예 2 | SN | 30.8 | 8.2x10-5 | 4.4 | ||
| 실시예 3 | EC | 17.8 | 3.7x10-4 | >4.6 | ||
| 실시예 4 | EC | 29.7 | 6.2x10-4 | >4.6 | ||
| 비교예 1 | SN | 8.6 | 4.9x10-4 | 4.0 | ||
| 비교예 2 | EC | 8.6 | 2.8x10-4 | 4.0 |
| 실시예 | 리튬 염 | 가소제 | 고분자:가소제:리튬염의 몰 비율 | 인장 강도 (MPa) |
분해에서의 연신율(%) | 이온 전도도 (S/cm) | 분해 전압 (V) |
| 실시예 5-1 | LiTFSI | SN | 1:1:3 | 19.2 | 8.60x10-4 | >4.6 | |
| 실시예 5-2 | LiPF6 | EC | 1:1:3 | 18.3 | 1.12x10-3 | >4.6 | |
| 실시예 5-3 | LiPF6 | SN | 1:1:3 | 18.0 | 9.30x10-4 | >4.6 | |
| 실시예 5-4 | LiTFSI | SN | 1:1:3 | 19.2 | 1.28x10-3 | >4.6 | |
| 실시예 5-5 | LiPF6 | SN | 1:8:1 | 33.9 | 1.40x10-4 | >4.6 | |
| 실시예 5-6 | LiTFSI | EC | 8:82:10 | 1.78 | 8.20x10-4 | >4.6 | |
| 실시예 5-7 | LiTFSI | EC | 10:68:22 | 2.29 | 10.5 | 1.10x10-3 | >4.6 |
| 실시예 5-8 | LiTFSI | EC | 13:49:39 | 9.00x10-4 | >4.6 | ||
| 실시예 5-9 | LiTFSI | EC | 14:66:20 | 2.77 | 9.3 | 5.30x10-4 | >4.6 |
| 실시예 5-10 | LiTFSI | EC | 13:74:13 | 3.20 | 11.9 | 2.50x10-4 | >4.6 |
| 실시예 5-11 | LiTFSI | EC | 16:64:20 | 1.52x10-4 | >4.6 | ||
| 실시예 5-12 | LiTFSI | EC | 28:55:17 | 5.2 | 1.20x10-4 | >4.6 | |
| 실시예 5-13 | LiTFSI | EC | 23:70:7 | 4.17 | 1.00x10-4 | >4.6 | |
| 실시예 5-14 | LiTFSI | EC | 52:37:11 | 7.2 | 1.10x10-4 | >4.6 | |
| 실시예 5-15 | LiTFSI | EC | 50:37:13 | 9.40x10-5 | >4.6 | ||
| 실시예 5-16 | LiTFSI | EC | 58:21:21 | 6.26 | 3.4 | 7.20x10-6 | >4.6 |
| 실시예 5-17 | LiTFSI | EC | 45:50:5 | 1.70x10-5 | >4.6 | ||
| 실시예 5-18 | LiTFSI | EC | 70:23:7 | 8.04 | 2.5 | 2.10x10-6 | >4.6 |
| 실시예 | 리튬 염 | 가소제 | 무기 첨가제 | 고분자:가소제:리튬염의 몰 비율 | 인장 강도 (MPa) |
분해 전위 (V) | 이온 이동 개수 |
| 실시예 5-19 |
LiTFSI | SN | Al2O3 (5% wt) |
1:3:1 | 38.4 | >4.6 | 0.64 |
| 실시예 5-20 |
Al2O3 (10% wt) |
37.3 | 0.71 | ||||
| 실시예 5-21 |
없음 | 36.1 | 0.42 | ||||
| 실시예 5-22 | BaTiO3 (5% wt) |
39.2 | 0.77 |
| 실시예/비교 | 리튬 염 | 가소제 | 고분자, 가소제, 리튬 염의 몰 비율 | 인장 강도 (Mpa) | 이온 전도도 (S/cm) | 분해 전위 (V) |
| 실시예 5 | LiTFSI |
SN | 1:3:1 |
19.2 | 5.2 E-03 | >4.6 |
| 실시예 6 | 36.1 | 1.7 E-04 | >4.6 | |||
| 실시예 7 | 22.5 | 3.1 E-04 | >4.6 | |||
| 실시예 8 | 34.2 | 4.0 E-04 | >4.6 | |||
| 비교예 3 | 8.2 | 1.3 E-04 | 3.9 |
Claims (16)
- 제1항에 있어서, 상기 생성물은 상기 고분자 및 제2 고분자를 포함하는 가교 반응의 생성물인 것인, 물품.
- 제1항에 있어서, 상기 고분자는 우레아(urea) 및 카바메이트(carbamate) 중 하나 이상의 작용기를 통해 가교되는 것인, 물품.
- 제1항에 있어서, 상기 물품은 가소제(plasticizer) 및 전해질 염을 추가로 포함하는, 물품.
- 제5항에 있어서, 상기 가소제는 에틸렌 카보네이트, 숙시노나이트릴(succinonitrile), 폴리에틸렌 옥사이드, 폴리카보네이트, 폴리아크릴로나이트릴, 폴리아크릴산, 나이트릴, 올리고에테르(oligoether), 또는 카보네이트를 포함하는 것인, 물품.
- 제6항에 있어서, 상기 나이트릴은 숙시노나이트릴, 글루타로나이트릴(glutaronitrile), 헥소나이트릴(hexonitrile), 및 말로노나이트릴(malononitrile) 중 하나 이상을 포함하고, 상기 올리고에테르는 트리글라임(triglyme)을 포함하고, 상기 카보네이트는 에틸렌 카보네이트, 프로필렌 카보네이트, 및 플루오로에틸렌 카보네이트 중 하나 이상을 포함하는 것인, 물품.
- 제5항에 있어서, 상기 전해질 염은 리튬 염을 포함하는 것인, 물품.
- 제5항에 있어서, 상기 물품은 개시제를 추가로 포함하고, 상기 개시제는 0.001 내지 0.01 사이의 몰 분율을 갖는 것인, 물품.
- 제5항에 있어서, 상기 고분자는 0.027 및 0.200 사이의 몰 분율을 갖고, 상기 가소제는 0.287 및 0.916 사이의 몰 분율을 갖고, 상기 전해질 염은 0.04 및 0.617 사이의 몰 분율을 갖는 것인, 물품.
- 제1항에 있어서, 상기 물품은 무기 첨가제를 추가로 포함하는, 물품.
- 제11항에 있어서, 상기 무기 첨가제는 Al2O3, SiO2, SiOx, TiO2, Li3PS4, Li10GeP2S12, Li7La3Zr2O12, Li6.4La3Zr1.4Ta0.6O12, LiLaTiO3, Li1.3Al0.3Ti1.7(PO4)3, Li1.3Al0.3Ge1.7(PO4)3, ZrO2, BaTiO3, 및 Li2TiO3 중 하나 이상을 포함하는 것인, 물품.
- 제1항 내지 제12항 중 어느 한 항에 기재된 물품을 포함하는 전기화학적 셀로서, 상기 전기화학적 셀은 배터리, 리튬-이온 배터리, 또는 리튬-이온 고체-상태 배터리인 것인, 전기화학적 셀.
- 고분자 고체 전해질의 제조방법으로서, 상기 제조방법은,
고분자를 포함하는 조성물을 용매와 혼합하여 슬러리를 형성하는 단계;
상기 용매를 제거하는 단계; 및
상기 슬러리를 경화하여 고체 전해질를 형성하는 단계를 포함하고,
상기 고분자는 하기로 이루어진 군으로부터 선택된 구조를 포함하고:
;
상기 식에서 R1은 하기로 이루어진 군으로부터 선택된 구조를 포함하고:
;
상기 식에서 n은 1 내지 10,000 범위 내의 정수이고 (이 때 n은 1 및 10,000도 포함함);
m은 1 내지 5,000 범위 내의 정수이고 (이 때 m은 1 및 5,000도 포함함);
R2, R3, R4, R5, 및 R6은 각각 독립적으로 하기로 이루어진 군으로부터 선택된 것이고:
;
상기 *은 부착 지점을 가리키는 것인, 고분자 고체 전해질의 제조방법.
- 제14항에 있어서, 상기 슬러리를 경화하는 것 전에, 제2 고분자를 상기 용매에 첨가하는 단계를 추가로 포함하는, 고분자 고체 전해질의 제조방법.
- 제15항에 있어서, 상기 제2 고분자는 하기로 이루어진 군으로부터 선택된 구조를 포함하고:
;
상기 식에서 R1은 하기로 이루어진 군으로부터 선택된 구조를 포함하고:
;
상기 식에서 n은 1 내지 10,000 범위 내의 정수이고 (이 때 n은 1 및 10,000도 포함함);
상기 식에서 m은 1 내지 5,000 범위 내의 정수이고 (이 때 m은 1 및 5,000도 포함함);
상기 식에서 R2, R3, R4, R5, 및 R6은 각각 독립적으로 하기로 이루어진 군으로부터 선택된 것이고:
;
상기 *은 부착 지점을 가리키는 것인, 고분자 고체 전해질의 제조방법.
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| WO2021221446A1 (ko) | 2020-04-29 | 2021-11-04 | 주식회사 엘지에너지솔루션 | 배터리 팩, 그것을 포함하는 전자 디바이스, 및 자동차 |
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| WO2024163273A2 (en) * | 2023-01-31 | 2024-08-08 | Factorial Inc. | Polymer electrolyte comprising crosslinked polymer and additive |
| WO2025147809A1 (zh) * | 2024-01-08 | 2025-07-17 | 深圳市星源材质科技股份有限公司 | 一种聚合物及其应用 |
| CN120978186A (zh) * | 2025-08-12 | 2025-11-18 | 西安热工研究院有限公司 | 一种锂电池用凝胶聚合物电解质膜及其制备方法和应用 |
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| KR102600239B1 (ko) | 2023-11-09 |
| US11302960B2 (en) | 2022-04-12 |
| CN111154093A (zh) | 2020-05-15 |
| CN111154093B (zh) | 2023-05-05 |
| US20210151795A9 (en) | 2021-05-20 |
| US20220302499A1 (en) | 2022-09-22 |
| US11735770B2 (en) | 2023-08-22 |
| JP2020076083A (ja) | 2020-05-21 |
| US20230344001A1 (en) | 2023-10-26 |
| US20200144667A1 (en) | 2020-05-07 |
| US12095034B2 (en) | 2024-09-17 |
| JP7341859B2 (ja) | 2023-09-11 |
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