KR102258676B1 - 고체 전지용 전극 및 고체 전지 - Google Patents
고체 전지용 전극 및 고체 전지 Download PDFInfo
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Abstract
[해결 수단] 고체 전지용의 전극으로서, 상기 전극은, 전극 활물질층, 집전체, 및, 당해 전극 활물질층과 집전체와의 사이에 배치되고, 또한 전극 활물질층과 접하는 PTC 저항체층을 구비하며, 상기 PTC 저항체층은, 도전재, 절연성 무기물, 및 폴리머를 함유하고, 상기 PTC 저항체층 중 어느 부분의 두께 방향에 있어서도 (A층의 두께):(B층의 두께)=1:2가 되도록, 상기 PTC 저항체층을, 상기 전극 활물질층에 가까운 측으로부터 차례로, A층 및 B층으로 나누었을 때, 상기 A층 중의 도전재, 절연성 무기물, 및 폴리머의 총 체적을 100체적%로 하였을 때의, 당해 A층 중의 절연성 무기물의 체적 비율 VA가, 상기 B층 중의 도전재, 절연성 무기물, 및 폴리머의 총 체적을 100체적%로 하였을 때의, 당해 B층 중의 절연성 무기물의 체적 비율 VB보다 적은 것을 특징으로 하는, 고체 전지용 전극.
Description
도 2는 본 개시의 고체 전지의 층 구성의 일례를 나타내는 도면으로서, 적층 방향으로 절단한 단면을 모식적으로 나타낸 도면이다.
도 3은 평가용 시료를 포함하는 전자 저항 측정용 회로의 모식도이다.
도 4는 전극의 평가용 시료의 전자 저항과, 당해 전극을 구비하는 고체 전지의 저항과의 관계를 나타내는 도면이다.
1a A층
1b B층
2 전극 활물질층
3, 3' 집전체
10 고체 전지용 전극
20 전해질층
30 다른 전극
40 마이크로 테스터
50 평가용 시료
100 고체 전지
200 전자 저항 측정용 회로
Claims (7)
- 고체 전지용의 전극으로서,
상기 전극은, 전극 활물질층, 집전체, 및, 당해 전극 활물질층과 집전체와의 사이에 배치되고, 또한 전극 활물질층과 접하는 PTC 저항체층을 구비하며,
상기 PTC 저항체층은, 도전재, 절연성 무기물, 및 폴리머를 함유하고,
상기 PTC 저항체층 중 어느 부분의 두께 방향에 있어서도 (A층의 두께):(B층의 두께)=1:2가 되도록, 상기 PTC 저항체층을, 상기 전극 활물질층에 가까운 측으로부터 차례로, A층 및 B층으로 나누었을 때,
상기 A층 중의 도전재, 절연성 무기물, 및 폴리머의 총 체적을 100체적%로 하였을 때의, 당해 A층 중의 절연성 무기물의 체적 비율 VA가,
상기 B층 중의 도전재, 절연성 무기물, 및 폴리머의 총 체적을 100체적%로 하였을 때의, 당해 B층 중의 절연성 무기물의 체적 비율 VB보다 적은 것을 특징으로 하는, 고체 전지용 전극. - 제 1 항에 있어서,
상기 체적 비율 VA를 체적 비율 VB에 의해 나누어 얻어지는 값(VA/VB)이, 0.08~0.5인, 고체 전지용 전극. - 제 1 항에 있어서,
상기 PTC 저항체층은, 도전재로서 탄소 함유 도전재를, 폴리머로서 불소 함유 폴리머를, 각각 함유하고, 또한,
상기 A층에 포함되는 탄소 원자의 원자 백분율을, 당해 A층에 포함되는 불소 원자의 원자 백분율에 의해 나누어 얻어지는 값이, 2.4~3.9인, 고체 전지용 전극. - 제 1 항에 있어서,
상기 절연성 무기물이 금속 산화물인, 고체 전지용 전극. - 제 1 항에 있어서,
상기 도전재가 카본 블랙인, 고체 전지용 전극. - 제 1 항에 있어서,
상기 B층 중의 절연성 무기물의 체적 비율 VB는, 50체적% 이상 90체적% 이하인, 고체 전지용 전극. - 정극, 부극, 및, 당해 정극 및 당해 부극의 사이에 배치된 전해질층을 구비하는 고체 전지로서,
상기 정극 및 부극 중 적어도 어느 일방은, 제 1 항 내지 제 6 항 중 어느 한 항에 기재된 고체 전지용 전극인 것을 특징으로 하는, 고체 전지.
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|---|---|---|---|
| JPJP-P-2018-141557 | 2018-07-27 | ||
| JP2018141557A JP6973319B2 (ja) | 2018-07-27 | 2018-07-27 | 固体電池用電極及び固体電池 |
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| KR20200012769A KR20200012769A (ko) | 2020-02-05 |
| KR102258676B1 true KR102258676B1 (ko) | 2021-06-01 |
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| EP (1) | EP3599654B1 (ko) |
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| JP6962286B2 (ja) | 2018-07-27 | 2021-11-05 | トヨタ自動車株式会社 | 固体電池用電極及び固体電池 |
| JP7147330B2 (ja) | 2018-07-27 | 2022-10-05 | トヨタ自動車株式会社 | 固体電池用電極及び固体電池 |
| JP7087784B2 (ja) * | 2018-07-27 | 2022-06-21 | トヨタ自動車株式会社 | 固体電池用電極及び固体電池 |
| CN113764612B (zh) * | 2020-05-29 | 2023-10-13 | 珠海冠宇电池股份有限公司 | 一种含有高安全性热敏涂层的正极极片及锂离子电池 |
| JP7484683B2 (ja) * | 2020-12-03 | 2024-05-16 | トヨタ自動車株式会社 | 全固体電池 |
| JP7524751B2 (ja) | 2020-12-10 | 2024-07-30 | トヨタ自動車株式会社 | 電極 |
| JP7331873B2 (ja) | 2021-01-28 | 2023-08-23 | トヨタ自動車株式会社 | 全固体電池 |
| WO2022205110A1 (zh) * | 2021-03-31 | 2022-10-06 | 宁德新能源科技有限公司 | 电化学装置和电子装置 |
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| RU2708885C1 (ru) | 2019-12-12 |
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| JP2020017494A (ja) | 2020-01-30 |
| EP3599654A1 (en) | 2020-01-29 |
| US11108049B2 (en) | 2021-08-31 |
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