KR20150121009A - 정극 활물질, 정극 재료, 정극 및 비수전해질 이차 전지 - Google Patents
정극 활물질, 정극 재료, 정극 및 비수전해질 이차 전지 Download PDFInfo
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Abstract
Description
도 1b는 코어-쉘형 정극 재료의 다른 일 실시 형태를 나타내는 단면 개략도이다.
도 2는 비수전해질 리튬 이온 이차 전지의 일 실시 형태인, 편평형(적층형)의 쌍극형이 아닌 비수전해질 리튬 이온 이차 전지의 기본 구성을 나타내는 단면 개략도이다.
도 3은 이차 전지의 대표적인 실시 형태인 편평한 리튬 이온 이차 전지의 외관을 나타낸 사시도이다.
3 : 정극 재료 10, 50 : 리튬 이온 이차 전지
11 : 부극 집전체 12 : 정극 집전체
13 : 부극 활물질층 15 : 정극 활물질층
17 : 세퍼레이터 19 : 단전지층
21, 57 : 발전 요소 25 : 부극 집전판
27 : 정극 집전판 29, 52 : 전지 외장재
58 : 정극 탭 59 : 부극 탭
Claims (15)
- 리튬과 니켈을 함유하는 복합 산화물을 포함하는 비수전해질 이차 전지용 정극 활물질이며,
1차 입자가 응집해서 이루어지는 2차 입자의 구성을 갖고,
상기 1차 입자의 평균 입자 직경(D1)이 0.9㎛ 이하이고, 상기 1차 입자의 평균 입자 직경(D1)에 대한 상기 2차 입자의 평균 입자 직경(D2)의 비의 값(D2/D1)이 11 이상인, 비수전해질 이차 전지용 정극 활물질. - 제1항에 있어서,
상기 복합 산화물은,
일반식: LiaNibMncCodMxO2(단, 식 중, a, b, c, d, x는, 0.9≤a≤1.2, 0<b<1, 0<c≤0.5, 0<d≤0.5, 0≤x≤0.3, b+c+d=1을 만족한다. M은 Ti, Zr, Nb, W, P, Al, Mg, V, Ca, Sr 및 Cr로 이루어지는 군에서 선택되는 적어도 1종임)로 표시되는 조성을 갖는, 비수전해질 이차 전지용 정극 활물질. - 제2항에 있어서,
상기 b, c 및 d가, 0.44≤b≤0.51, 0.27≤c≤0.31, 0.19≤d≤0.26인, 비수전해질 이차 전지용 정극 활물질. - 제1항 내지 제3항 중 어느 한 항에 있어서,
결정자 직경이 0.4㎛ 이하인, 비수전해질 이차 전지용 정극 활물질. - 제1항 내지 제4항 중 어느 한 항에 있어서,
탭 밀도가 2.0g/cm3 이상인, 비수전해질 이차 전지용 정극 활물질. - 제1항 내지 제5항 중 어느 한 항에 있어서,
BET 비표면적이 0.1 내지 1.0m2/g인, 비수전해질 이차 전지용 정극 활물질. - 제1항 내지 제6항 중 어느 한 항에 있어서,
분말 X선 회절 측정에 의한 (104)면의 회절 피크와 (003)면의 회절 피크가, 회절 피크 강도비((003)/(104))로서 1.28 이상이며, 회절 피크 적분 강도비((003)/(104))로서 1.05 이상인, 비수전해질 이차 전지용 정극 활물질. - 제1항 내지 제7항 중 어느 한 항에 기재된 정극 활물질을 포함하는 코어부와, 상기 정극 활물질과 상이한 리튬 함유 복합 산화물을 포함하는 쉘부를 갖는 비수전해질 이차 전지용 정극 재료.
- 제1항 내지 제7항 중 어느 한 항에 기재된 정극 활물질과, 스피넬계 망간 정극 활물질이 혼합 상태에서 함유되어 이루어지는, 비수전해질 이차 전지용 정극 재료.
- 제9항에 있어서,
제1항 내지 제7항 중 어느 한 항에 기재된 정극 활물질과, 상기 스피넬계 망간 정극 활물질과의 혼합 중량 비율이, 50:50 내지 90:10인, 비수전해질 이차 전지용 정극 재료. - 정극 집전체의 표면에, 제1항 내지 제7항 중 어느 한 항에 기재된 정극 활물질 및 제8항 내지 제10항 중 어느 한 항에 기재된 정극 재료로 이루어지는 군에서 선택되는 적어도 1종을 포함하는 정극 활물질층이 형성되어 이루어지는 비수전해질 이차 전지용 정극.
- 제11항에 기재된 정극과,
부극 집전체의 표면에 부극 활물질층이 형성되어 이루어지는 부극과,
세퍼레이터,
를 포함하는 발전 요소를 갖는 비수전해질 이차 전지. - 제12항에 있어서,
상기 세퍼레이터가 내열 절연층 구비 세퍼레이터인, 비수전해질 이차 전지. - 제12항 또는 제13항에 있어서,
정격 용량에 대한 전지 면적(전지 외장체까지 포함한 전지의 투영 면적)의 비의 값이 5cm2/Ah 이상이고, 또한 정격 용량이 3Ah 이상인, 비수전해질 이차 전지. - 제12항 내지 제14항 중 어느 한 항에 있어서,
직사각 형상의 정극 활물질층의 종횡비로서 정의되는 전극의 애스펙트비가 1 내지 3인, 비수전해질 이차 전지.
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| JPJP-P-2013-040094 | 2013-02-28 | ||
| JP2013040094 | 2013-02-28 | ||
| PCT/JP2014/054829 WO2014133063A1 (ja) | 2013-02-28 | 2014-02-27 | 正極活物質、正極材料、正極および非水電解質二次電池 |
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| KR101669385B1 KR101669385B1 (ko) | 2016-10-25 |
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| KR1020157023416A Active KR101669385B1 (ko) | 2013-02-28 | 2014-02-27 | 정극 활물질, 정극 재료, 정극 및 비수전해질 이차 전지 |
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| US (1) | US9843033B2 (ko) |
| EP (1) | EP2963706B1 (ko) |
| JP (1) | JP6229709B2 (ko) |
| KR (2) | KR20160102083A (ko) |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017150949A1 (ko) * | 2016-03-04 | 2017-09-08 | 주식회사 엘지화학 | 이차전지용 양극활물질, 이의 제조방법 및 이를 포함하는 이차전지 |
| KR20190033068A (ko) * | 2016-07-29 | 2019-03-28 | 스미토모 긴조쿠 고잔 가부시키가이샤 | 비수계 전해질 이차 전지용 정극 활물질과 그 제조 방법, 및 비수계 전해질 이차 전지 |
| US10535873B2 (en) | 2016-03-04 | 2020-01-14 | Lg Chem, Ltd. | Positive electrode active material for secondary battery, method of preparing the same and secondary battery including the same |
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| US9843033B2 (en) | 2013-02-28 | 2017-12-12 | Nissan Motor Co., Ltd. | Positive electrode active substance, positive electrode material, positive electrode, and non-aqueous electrolyte secondary battery |
| CN105074997B (zh) | 2013-03-26 | 2018-01-02 | 日产自动车株式会社 | 非水电解质二次电池 |
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| JP2017073281A (ja) * | 2015-10-07 | 2017-04-13 | 日産自動車株式会社 | 非水電解質二次電池用正極材料、並びにこれを用いた非水電解質二次電池用正極および非水電解質二次電池 |
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| KR102004457B1 (ko) * | 2015-11-30 | 2019-07-29 | 주식회사 엘지화학 | 이차전지용 양극활물질 및 이를 포함하는 이차전지 |
| JP6908368B2 (ja) * | 2016-02-29 | 2021-07-28 | パナソニック株式会社 | 非水電解質二次電池用正極活物質及び非水電解質二次電池 |
| KR101937896B1 (ko) * | 2016-03-04 | 2019-01-14 | 주식회사 엘지화학 | 이차전지용 양극활물질의 전구체 및 이를 이용하여 제조된 양극활물질 |
| JP6412094B2 (ja) | 2016-12-26 | 2018-10-24 | 住友化学株式会社 | リチウム二次電池用正極活物質、リチウム二次電池用正極及びリチウム二次電池 |
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2014
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- 2014-02-27 JP JP2015503008A patent/JP6229709B2/ja active Active
- 2014-02-27 KR KR1020167022172A patent/KR20160102083A/ko not_active Ceased
- 2014-02-27 KR KR1020157023416A patent/KR101669385B1/ko active Active
- 2014-02-27 WO PCT/JP2014/054829 patent/WO2014133063A1/ja not_active Ceased
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2017150949A1 (ko) * | 2016-03-04 | 2017-09-08 | 주식회사 엘지화학 | 이차전지용 양극활물질, 이의 제조방법 및 이를 포함하는 이차전지 |
| US10535873B2 (en) | 2016-03-04 | 2020-01-14 | Lg Chem, Ltd. | Positive electrode active material for secondary battery, method of preparing the same and secondary battery including the same |
| KR20190033068A (ko) * | 2016-07-29 | 2019-03-28 | 스미토모 긴조쿠 고잔 가부시키가이샤 | 비수계 전해질 이차 전지용 정극 활물질과 그 제조 방법, 및 비수계 전해질 이차 전지 |
| KR20230005398A (ko) * | 2016-07-29 | 2023-01-09 | 스미토모 긴조쿠 고잔 가부시키가이샤 | 비수계 전해질 이차 전지용 정극 활물질과 그 제조 방법, 및 비수계 전해질 이차 전지 |
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|---|---|
| KR20160102083A (ko) | 2016-08-26 |
| CN105122516B (zh) | 2017-03-29 |
| US20160013471A1 (en) | 2016-01-14 |
| JPWO2014133063A1 (ja) | 2017-02-02 |
| JP6229709B2 (ja) | 2017-11-15 |
| WO2014133063A1 (ja) | 2014-09-04 |
| EP2963706A1 (en) | 2016-01-06 |
| CN105122516A (zh) | 2015-12-02 |
| US9843033B2 (en) | 2017-12-12 |
| EP2963706B1 (en) | 2020-01-22 |
| EP2963706A4 (en) | 2016-11-30 |
| KR101669385B1 (ko) | 2016-10-25 |
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