KR20160101932A - 비수 전해질 2차 전지용 부극 활물질 및 그의 제조 방법 - Google Patents
비수 전해질 2차 전지용 부극 활물질 및 그의 제조 방법 Download PDFInfo
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- KR20160101932A KR20160101932A KR1020167016660A KR20167016660A KR20160101932A KR 20160101932 A KR20160101932 A KR 20160101932A KR 1020167016660 A KR1020167016660 A KR 1020167016660A KR 20167016660 A KR20167016660 A KR 20167016660A KR 20160101932 A KR20160101932 A KR 20160101932A
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- South Korea
- Prior art keywords
- negative electrode
- active material
- electrode active
- silicon
- secondary battery
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- 239000007773 negative electrode material Substances 0.000 title claims abstract description 123
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- 239000000203 mixture Substances 0.000 claims abstract description 137
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Images
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
- H01M4/5825—Oxygenated metallic salts or polyanionic structures, e.g. borates, phosphates, silicates, olivines
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/04—Processes of manufacture in general
- H01M4/0471—Processes of manufacture in general involving thermal treatment, e.g. firing, sintering, backing particulate active material, thermal decomposition, pyrolysis
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/134—Electrodes based on metals, Si or alloys
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/362—Composites
- H01M4/364—Composites as mixtures
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
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Abstract
Description
도 2는 실시예 1-6 및 비교예 1-3에서 얻어진 입자의 입자 표면의 라만 분광 스펙트럼이다.
도 3은 실시예 1-6에서 얻어진 입자의 단면 주사형 전자 현미경상이며, 도면 중 중앙의 「+」 표시를 한 개소는 금속 규소 입자를 가리키고 있다.
도 4는 실시예 1-6 및 비교예 1-2, 1-5에 있어서의 입자의 충방전 곡선이다.
도 5는 실시예 1-13 및 비교예 1-9, 1-15의 사이클 특성의 평가를 행한 그래프이다.
도 6은 실시예 2-3 및 실시예 2-11에서 얻어진 입자의 분말 X선 회절 스펙트럼이다.
도 7은 실시예 2-3 및 실시예 2-11에서 얻어진 입자의 입자 표면의 라만 분광 스펙트럼이다.
도 8은 실시예 2-10에서 얻어진 입자의 단면 주사형 전자 현미경상이며, 도면 중 좌측 상단의 「+」 표시를 한 개소는 금속 규소 입자를 가리키고 있다.
도 9는 실시예 2-13, 2-14, 2-23, 2-24 및 비교예 2-7의 사이클 특성의 평가를 행한 그래프이다.
Claims (16)
- 원소 조성식 Met1-Si-O-C-H(식 중, Met1은 알칼리 금속 원소의 1종 또는 혼합물임)로 표시되는 비수 전해질 2차 전지용 부극 활물질이며,
규소계 무기 화합물과 상기 알칼리 금속을 포함하는 규산염을 포함하고,
규소, 규소 합금 또는 규소 산화물을 포함하는 미립자가 상기 규산염 중에 분산되어 있는 것임을 특징으로 하는 비수 전해질 2차 전지용 부극 활물질. - 제1항에 있어서, 상기 알칼리 금속 원소가 Li 또는 Na인 것을 특징으로 하는 비수 전해질 2차 전지용 부극 활물질.
- 원소 조성식 Met2-Si-O-C-H(식 중, Met2는 알칼리 토금속 원소의 1종 또는 혼합물임)로 표시되는 비수 전해질 2차 전지용 부극 활물질이며,
규소계 무기 화합물과 상기 알칼리 토금속을 포함하는 규산염을 포함하는 것임을 특징으로 하는 비수 전해질 2차 전지용 부극 활물질. - 제3항에 있어서, 상기 알칼리 토금속 원소가 Mg 또는 Ca인 것을 특징으로 하는 비수 전해질 2차 전지용 부극 활물질.
- 제3항 또는 제4항에 있어서, 규소, 규소 합금 또는 규소 산화물을 포함하는 미립자가 상기 규산염 중에 분산되어 있는 것임을 특징으로 하는 비수 전해질 2차 전지용 부극 활물질.
- 제1항 내지 제5항 중 어느 한 항에 있어서, 상기 규산염이 3족 내지 13족 금속을 더 포함하는 것을 특징으로 하는 비수 전해질 2차 전지용 부극 활물질.
- 제6항에 있어서, 상기 3족 내지 13족 금속이 제1 전이 금속 또는 제2 전이 금속인 것을 특징으로 하는 비수 전해질 2차 전지용 부극 활물질.
- 제1항 내지 제7항 중 어느 한 항에 있어서, 상기 규산염 중에 탄소 입자가 분산되어 있는 것임을 특징으로 하는 비수 전해질 2차 전지용 부극 활물질.
- 제1항 내지 제8항 중 어느 한 항에 기재된 비수 전해질 2차 전지용 부극 활물질을 사용한 것임을 특징으로 하는 비수 전해질 2차 전지용 부극.
- 제9항에 기재된 비수 전해질 2차 전지용 부극을 사용한 것임을 특징으로 하는 비수 전해질 2차 전지.
- 규소, 규소 합금 또는 규소 산화물을 포함하는 미립자와, 알칼리 금속 화합물과, 경화성 유기 규소 화합물을 함유하는 조성물을 혼합하여 원료 혼합물로 하는 공정과,
상기 경화성 유기 규소 화합물을 경화시켜 상기 원료 혼합물을 경화시키는 공정과,
상기 경화시킨 원료 혼합물을 소성하여 상기 경화성 유기 규소 화합물을 무기화시키는 공정
을 갖는 것을 특징으로 하는 비수 전해질 2차 전지용 부극 활물질의 제조 방법. - 알칼리 토금속 화합물과, 경화성 유기 규소 화합물을 함유하는 조성물을 혼합하여 원료 혼합물로 하는 공정과,
상기 경화성 유기 규소 화합물을 경화시켜 상기 원료 혼합물을 경화시키는 공정과,
상기 경화시킨 원료 혼합물을 소성하여 상기 경화성 유기 규소 화합물을 무기화시키는 공정
을 갖는 것을 특징으로 하는 비수 전해질 2차 전지용 부극 활물질의 제조 방법. - 제12항에 있어서, 상기 원료 혼합물을, 규소, 규소 합금 또는 규소 산화물을 포함하는 미립자를 더 혼합한 것으로 하는 것을 특징으로 하는 비수 전해질 2차 전지용 부극 활물질의 제조 방법.
- 제11항 내지 제13항 중 어느 한 항에 있어서, 상기 원료 혼합물을, 3족 내지 13족 금속 화합물을 더 혼합한 것으로 하는 것을 특징으로 하는 비수 전해질 2차 전지용 부극 활물질의 제조 방법.
- 제11항 내지 제14항 중 어느 한 항에 있어서, 상기 원료 혼합물을, 탄소 입자를 더 혼합한 것으로 하는 것을 특징으로 하는 비수 전해질 2차 전지용 부극 활물질의 제조 방법.
- 제15항에 있어서, 상기 탄소 입자를, 천연 흑연, 합성 흑연, 탄소 섬유 중 어느 하나를 포함하는 것으로 하는 것을 특징으로 하는 비수 전해질 2차 전지용 부극 활물질의 제조 방법.
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EP3480875B1 (en) | 2021-05-12 |
US10050272B2 (en) | 2018-08-14 |
US20160322637A1 (en) | 2016-11-03 |
CN105849953A (zh) | 2016-08-10 |
CN105849953B (zh) | 2019-09-06 |
WO2015097990A1 (ja) | 2015-07-02 |
EP3089245A4 (en) | 2017-09-20 |
EP3089245B1 (en) | 2019-01-30 |
EP3089245A1 (en) | 2016-11-02 |
EP3480875A1 (en) | 2019-05-08 |
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