KR101888552B1 - 리튬 이온 이차전지용 양극 활물질, 그것을 사용한 리튬 이온 이차전지용 양극 및 리튬 이온 이차전지 - Google Patents
리튬 이온 이차전지용 양극 활물질, 그것을 사용한 리튬 이온 이차전지용 양극 및 리튬 이온 이차전지 Download PDFInfo
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- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
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- H01M4/38—Selection of substances as active materials, active masses, active liquids of elements or alloys
- H01M4/381—Alkaline or alkaline earth metals elements
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- H01M4/505—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
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- H01M4/525—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
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Abstract
이하의 조성식(1)
Li1+xNiyCozM1-x-y-zO2 (1)
[식 중, x는 -0.12≤x≤0.2를 만족하는 수이며, y는 0.7≤y≤0.9를 만족하는 수이며, z는 0.05≤z≤0.3을 만족하는 수이며, M은 Mg, Al, Ti, Mn, Zr, Mo 및 Nb로 이루어지는 군에서 선택되는 적어도 1종의 원소이다]
으로 표시되는 1차 입자 및 상기 1차 입자가 응집한 2차 입자를 포함하고,
상기 1차 입자 및 상기 2차 입자가 0.1% 이상 2.0% 이하의 중량 비율로 유리(遊離) 리튬 화합물을 포함하고, 상기 유리 리튬 화합물에 있어서의 수산화리튬의 중량이, 상기 유리 리튬 화합물에 있어서의 탄산리튬의 중량의 60% 이하인 것을 특징으로 한다.
Description
도 2는 수은 압입법에 의해 측정한 실시예1의 2차 입자의 세공 용적 분포를 나타내는 도면.
도 3은 실시예 및 비교예에 따른 리튬 이온 이차전지의 용량과 충방전 사이클 특성의 관계를 나타내는 도면.
2 음극
3 세퍼레이터
4 전지캔
5 음극 리드편
6 밀폐 덮개
7 양극 리드편
8 씰재
9 절연판
10 리튬 이온 이차전지
Claims (8)
- 이하의 조성식(1)
Li1+xNiyCozM1-x-y-zO2 (1)
[식 중, x는 -0.12≤x≤0.2를 만족하는 수이며, y는 0.7≤y≤0.9를 만족하는 수이며, z는 0.05≤z≤0.3을 만족하는 수이며, M은 Mg, Al, Ti, Mn, Zr, Mo 및 Nb로 이루어지는 군에서 선택되는 적어도 1종의 원소이다]
으로 표시되는 1차 입자 및 상기 1차 입자가 응집한 2차 입자를 포함하고,
상기 1차 입자 및 상기 2차 입자가 0.1% 이상 2.0% 이하의 중량 비율로 유리(遊離) 리튬 화합물을 포함하고, 상기 유리 리튬 화합물에 있어서의 수산화리튬의 중량이, 상기 유리 리튬 화합물에 있어서의 탄산리튬의 중량의 60% 이하이며,
상기 2차 입자가 개기공(開氣孔)을 갖고, 수은 압입법에 의해 구해지는 세공경 0.1㎛ 이상 0.5㎛ 이하의 범위 내의 개기공 용적률이 8% 이상 16% 이하이며,
BET 비표면적이 0.2 m2/g 이상 1.0 m2/g 이하인
리튬 이온 이차전지용 양극 활물질. - 제1항에 있어서,
상기 1차 입자 및 상기 2차 입자에 있어서의 탄산리튬의 함유량이 0.07중량% 이상 1.50중량% 이하인 리튬 이온 이차전지용 양극 활물질. - 제1항에 있어서,
상기 1차 입자 및 상기 2차 입자에 포함되는 상기 유리 리튬 화합물의 중량 비율이 0.1% 이상 1.0% 이하인 리튬 이온 이차전지용 양극 활물질. - 제1항에 있어서,
상기 1차 입자 및 상기 2차 입자의 표면에 있어서의 Ni 농도가, 상기 1차 입자 및 상기 2차 입자의 중심 근방에 있어서의 Ni 농도보다도 낮은 리튬 이온 이차전지용 양극 활물질. - 제1항에 있어서,
상기 1차 입자의 평균 입경이 0.1㎛ 이상 2㎛ 이하인 리튬 이온 이차전지용 양극 활물질. - 삭제
- 제1항 내지 제5항 중 어느 한 항에 기재된 리튬 이온 이차전지용 양극 활물질을 포함하는 리튬 이온 이차전지용 양극.
- 제7항에 기재된 리튬 이온 이차전지용 양극을 구비하는 리튬 이온 이차전지.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014205787 | 2014-10-06 | ||
| JPJP-P-2014-205787 | 2014-10-06 | ||
| JP2015073914A JP6589339B2 (ja) | 2014-10-06 | 2015-03-31 | リチウムイオン二次電池用正極活物質、それを用いたリチウムイオン二次電池用正極及びリチウムイオン二次電池 |
| JPJP-P-2015-073914 | 2015-03-31 |
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| KR20160041004A KR20160041004A (ko) | 2016-04-15 |
| KR101888552B1 true KR101888552B1 (ko) | 2018-08-16 |
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| US10615414B2 (en) | 2016-01-15 | 2020-04-07 | Toda Kogyo Corp. | Lithium nickelate-based positive electrode active substance particles and process for producing the same, and non-aqueous electrolyte secondary battery |
| EP3392896B1 (en) * | 2016-01-22 | 2020-01-08 | Asahi Kasei Kabushiki Kaisha | Nonaqueous lithium power storage element |
| CN108028375B (zh) * | 2016-05-30 | 2020-12-18 | 日立金属株式会社 | 正极活性物质、正极、以及锂离子二次电池 |
| WO2018012015A1 (ja) * | 2016-07-14 | 2018-01-18 | 三井金属鉱業株式会社 | 全固体型リチウム二次電池用正極活物質 |
| JP6337360B2 (ja) * | 2016-08-31 | 2018-06-06 | 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 |
| JP7011890B2 (ja) * | 2016-09-26 | 2022-01-27 | 株式会社Gsユアサ | 蓄電素子 |
| KR102311052B1 (ko) * | 2017-03-30 | 2021-10-08 | 주식회사 엘지에너지솔루션 | 양극 슬러리 제조 방법 및 이에 의해 제조된 이차 전지용 양극 슬러리 |
| JP6368022B1 (ja) * | 2017-05-31 | 2018-08-01 | 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 |
| JP7137769B2 (ja) | 2017-12-15 | 2022-09-15 | 株式会社Gsユアサ | 非水電解質二次電池用正極活物質、遷移金属水酸化物前駆体、遷移金属水酸化物前駆体の製造方法、非水電解質二次電池用正極活物質の製造方法、非水電解質二次電池用正極、及び非水電解質二次電池 |
| EP3734718B1 (en) * | 2017-12-27 | 2023-05-31 | Proterial, Ltd. | Positive electrode active material for lithium ion secondary batteries, method for producing positive electrode active material for lithium ion secondary batteries, and lithium ion secondary battery |
| CN112424984A (zh) * | 2018-07-16 | 2021-02-26 | 尤米科尔公司 | 具有改善的寿命特性的可充电锂离子蓄电池 |
| EP3847711A1 (de) * | 2018-09-05 | 2021-07-14 | Albemarle Germany GmbH | Verfahren zur herstellung einer wiederaufladbaren hochenergie-batterie mit einer anion-redoxaktiven kompositkathode |
| US20210359301A1 (en) * | 2018-09-28 | 2021-11-18 | Panasonic Intellectual Property Management Co., Ltd. | Nonaqueous electrolyte secondary battery |
| KR102254848B1 (ko) * | 2019-07-23 | 2021-05-24 | 주식회사 엘 앤 에프 | 신규한 리튬 복합금속 산화물 및 이를 포함하는 리튬 이차전지 |
| KR102254846B1 (ko) * | 2019-07-23 | 2021-05-24 | 주식회사 엘 앤 에프 | 신규한 리튬 복합금속 산화물 및 이를 포함하는 리튬 이차전지 |
| EP4191703A4 (en) | 2020-07-30 | 2024-09-18 | Sumitomo Metal Mining Co., Ltd. | POSITIVE ELECTRODE ACTIVE MATERIAL FOR ALL-SOLID-STATE LITHIUM-ION SECONDARY BATTERIES, AND PRODUCTION METHOD THEREFOR |
| KR102757522B1 (ko) * | 2021-03-30 | 2025-01-21 | 가부시키가이샤 프로테리아루 | 리튬이온 이차전지용 정극 활물질의 제조방법 |
| KR102726274B1 (ko) * | 2022-05-19 | 2024-11-04 | 동국대학교 산학협력단 | 하이-니켈 단입자 양극활물질의 제조방법 |
| CN121794798A (zh) * | 2024-02-09 | 2026-04-03 | 株式会社博迈立铖 | 锂离子二次电池用正极活性物质的前体的制造方法、及锂离子二次电池用正极活性物质的制造方法 |
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