KR101041932B1 - 이차전지용 전극 및 그 제조 방법과, 이를 이용한 이차전지 - Google Patents
이차전지용 전극 및 그 제조 방법과, 이를 이용한 이차전지 Download PDFInfo
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- KR101041932B1 KR101041932B1 KR1020080101350A KR20080101350A KR101041932B1 KR 101041932 B1 KR101041932 B1 KR 101041932B1 KR 1020080101350 A KR1020080101350 A KR 1020080101350A KR 20080101350 A KR20080101350 A KR 20080101350A KR 101041932 B1 KR101041932 B1 KR 101041932B1
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- secondary battery
- active material
- electrode active
- nanoparticles
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- 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
- H01M4/139—Processes of manufacture
- H01M4/1391—Processes of manufacture of electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
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- H—ELECTRICITY
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- H01M4/04—Processes of manufacture in general
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- H—ELECTRICITY
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- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/131—Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
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- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
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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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- H01M4/52—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron
- 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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- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
Description
Claims (17)
- 집전체와;상기 집전체의 적어도 일면에 전기장이 인가된 상태에서의 분사에 의해 입자 상태로 접착되며, 1성분계 이상의 금속산화물 나노입자를 포함하여 이루어진 다공성 전극 활물질층을 포함하는 것을 특징으로 하는 이차전지용 전극.
- 제1항에 있어서, 상기 금속산화물 나노입자의 평균 크기는 2~1000 nm인 것을 특징으로 하는 이차전지용 전극.
- 제1항에 있어서, 상기 전극 활물질층은 음극 활물질층이고, 상기 금속산화물 나노입자는 SnO2, TiO2, Fe2O3, Fe3O4, CoO, Co3O4, CaO, MgO, CuO, ZnO, In2O3, NiO, MoO3, WO3, Li4Ti5O12 및 SnSiO3 나노입자로 이루어진 군 중에서 선택된 적어도 어느 하나 또는 둘 이상의 혼합 상인 것을 특징으로 하는 이차전지용 전극.
- 제1항에 있어서, 상기 전극 활물질층은 양극 활물질층이고, 상기 금속산화물 나노입자는 (1) V2O5, CuV2O6, NaMnO2, NaFeO2, LiCoO2, LiNi1-yCoyO2 (0≤y≤0.85), LiMn2O4, Li[Ni1/2Mn1/2]O2 및 LiFePO4 나노입자로 이루어진 군 중에서 선택된 적어도 어느 하나 또는 둘 이상의 혼합 상이거나, 혹은 (2) LiFePO4의 리튬 자리에 Mg2+, Al3+, Ti4+, Zr4+, Nb5+ 및 W6+ 이온으로 이루어진 군 중에서 선택된 적어도 어느 하나가 1 at% 이하로 도핑된 LiFePO4 나노입자이거나, 혹은 (3) 상기 (1)과 (2)가 혼합된 것을 특징으로 하는 이차전지용 전극.
- 제1항에 있어서, 상기 집전체는 (1) 백금(Pt), 금(Au), 팔라듐(Pd), 이리듐(Ir), 은(Ag), 로듐(Rh), 루테늄(Ru), 니켈(Ni), 스테인리스 스틸, 알루미늄(Al), 몰리브데늄(Mo), 크롬(Cr), 구리(Cu), 티타늄(Ti) 및 텅스텐(W)으로 이루어진 군 중에서 선택된 어느 하나의 재질이거나, 혹은 (2) ITO(In doped SnO2) 또는 FTO(F doped SnO2) 재질이거나, 혹은 (3) Si 웨이퍼에 형성된 금속 재질인 것을 특징으로 하는 이차전지용 전극.
- 제1항에 있어서, 상기 전극 활물질층은 상기 집전체에 열 압착된 것을 특징으로 하는 이차전지용 전극.
- 서로 다른 극성을 갖는 두 종류의 이차전지용 전극과, 전해질을 포함하여 이루어지며,상기 두 종류의 이차전지용 전극 중 적어도 하나는 제1항에 따른 이차전지용 전극인 것을 특징으로 하는 이차전지.
- 제7항에 있어서, 상기 두 종류의 이차전지용 전극 중 어느 하나는 음극으로서 제3항에 따른 이차전지용 전극이고, 다른 하나는 양극으로서 제4항에 따른 이차전지용 전극인 것을 특징으로 하는 이차전지.
- 용매에 1종 이상의 금속산화물 나노입자가 분산된 현탄액을 준비하고;집전체 위에 상기 현탄액을 전기장이 인가된 상태에서 분사하여 상기 1종 이상의 금속산화물 나노입자를 포함하여 이루어진 다공성 전극 활물질층을 형성하며;상기 다공성 전극 활물질층을 열처리하는 것을 특징으로 하는 이차전지용 전극의 제조 방법.
- 제9항에 있어서, 상기 용매는 에탄올, 메탄올, 프로판올, 부탄올, 이소프로필알콜(IPA), 디메틸포름아마이드(dimethylformamide; DMF), 아세톤, 데트라하이드로퓨란, 톨루엔 및 물로 이루어진 군에서 선택된 적어도 어느 하나인 것을 특징으로 하는 이차전지용 전극의 제조 방법.
- 제9항에 있어서, 상기 전극 활물질층은 음극 활물질층이고, 상기 금속산화물 나노입자는 SnO2, TiO2, Fe2O3, Fe3O4, CoO, Co3O4, CaO, MgO, CuO, ZnO, In2O3, NiO, MoO3, WO3, Li4Ti5O12 및 SnSiO3 나노입자로 이루어진 군 중에서 선택된 적어도 어느 하나인 것을 특징으로 하는 이차전지용 전극의 제조 방법.
- 제9항에 있어서, 상기 전극 활물질층은 양극 활물질층이고, 상기 금속산화물 나노입자는 (1) V2O5, CuV2O6, NaMnO2, NaFeO2, LiCoO2, LiNi1-yCoyO2 (0≤y≤0.85), LiMn2O4, Li[Ni1/2Mn1/2]O2 및 LiFePO4 나노입자로 이루어진 군 중에서 선택된 적어도 어느 하나이거나, 혹은 (2) LiFePO4의 리튬 자리에 Mg2+, Al3+, Ti4+, Zr4+, Nb5+ 및 W6+ 이온으로 이루어진 군 중에서 선택된 적어도 어느 하나가 1 at% 이하로 도핑된 LiFePO4 나노입자이거나, 혹은 (3) 상기 (1)과 (2)가 혼합된 것을 특징으로 하는 이차전지용 전극의 제조 방법.
- 제9항에 있어서, 상기 현탄액은, 용매에 1종 이상의 금속산화물 나노입자를 넣은 후, (1) 밀링을 하거나, (2) 초음파 분산 또는 분쇄를 하거나, (3) 계면활성제를 넣거나, (4) 상기 (1) 내지 (3)의 방법 중 적어도 두 가지 방법을 혼합하여 준비하는 것을 특징으로 하는 이차전지용 전극의 제조 방법.
- 제13항에 있어서, 상기 계면활성제는 아세트산, 세틸트리메틸 암모늄 브로마이드(Cetyltrimethyl ammonium bromide: CTAB), isopropyltris (N-aminoethyl-aminoethyl) titanate (INAAT), 3-Aminopropyltriethoxy-silane (APTS), PVP(Polyvinyl Pyrrolidone) 및 Poly(4-vinylphenol)으로 이루어진 군 중에서 선택된 적어도 어느 하나인 것을 특징으로 하는 이차전지용 전극의 제조 방법.
- 제9항에 있어서, 상기 분사는 전기분사 또는 에어 플레쉬 분사인 것을 특징으로 하는 이차전지용 전극의 제조 방법.
- 제9항에 있어서, 상기 열처리는 100~500 ℃의 온도에서 이루어지는 것을 특징으로 하는 이차전지용 전극의 제조 방법.
- 제9항에 있어서, 상기 분사 후 상기 열처리 전 상기 전극 활물질층을 열 압착하는 것을 특징으로 하는 이차전지용 전극의 제조 방법.
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JP2002260648A (ja) | 2001-02-28 | 2002-09-13 | Toshiba Battery Co Ltd | ニッケル・水素二次電池用正極とその製造方法、その正極が組み込まれているニッケル・水素二次電池 |
KR100619205B1 (ko) | 2004-05-21 | 2006-09-01 | 한국과학기술연구원 | 전기영동소자용 유·무기 나노복합입자, 및 그의 제조방법 및 장치 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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KR101319461B1 (ko) | 2011-08-26 | 2013-10-29 | 경상대학교산학협력단 | 리튬 금속 산화물 나노 구조체가 형성된 전극-집전체 일체형 전극소자 및 이의 제조 방법 |
KR101688325B1 (ko) * | 2015-08-12 | 2016-12-20 | 김서원 | 슈퍼커패시터용 플렉시블 전극 제조방법 |
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US8968934B2 (en) | 2015-03-03 |
JP2010097945A (ja) | 2010-04-30 |
WO2010044557A2 (en) | 2010-04-22 |
WO2010044557A3 (en) | 2010-07-15 |
KR20100042180A (ko) | 2010-04-23 |
JP5424806B2 (ja) | 2014-02-26 |
US20100092866A1 (en) | 2010-04-15 |
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