CN105981204B - 非水电解质二次电池的负极材料用的负极活性物质、非水电解质二次电池用负极电极、以及非水电解质二次电池 - Google Patents

非水电解质二次电池的负极材料用的负极活性物质、非水电解质二次电池用负极电极、以及非水电解质二次电池 Download PDF

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CN105981204B
CN105981204B CN201580007499.1A CN201580007499A CN105981204B CN 105981204 B CN105981204 B CN 105981204B CN 201580007499 A CN201580007499 A CN 201580007499A CN 105981204 B CN105981204 B CN 105981204B
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negative electrode
active material
electrode active
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secondary battery
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CN105981204A (zh
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广瀬贵一
加茂博道
吉川博树
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Shin Etsu Chemical Co Ltd
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
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    • H01M4/02Electrodes composed of, or comprising, active material
    • H01M4/36Selection of substances as active materials, active masses, active liquids
    • H01M4/362Composites
    • H01M4/366Composites as layered products
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/05Accumulators with non-aqueous electrolyte
    • H01M10/052Li-accumulators
    • H01M10/0525Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • HELECTRICITY
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    • H01M4/04Processes of manufacture in general
    • H01M4/0438Processes of manufacture in general by electrochemical processing
    • H01M4/044Activating, forming or electrochemical attack of the supporting material
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    • H01M4/0438Processes of manufacture in general by electrochemical processing
    • H01M4/0459Electrochemical doping, intercalation, occlusion or alloying
    • H01M4/0461Electrochemical alloying
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    • H01M4/13Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H01M4/131Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
    • HELECTRICITY
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    • H01M4/36Selection of substances as active materials, active masses, active liquids
    • H01M4/48Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
    • H01M4/485Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of mixed oxides or hydroxides for inserting or intercalating light metals, e.g. LiTi2O4 or LiTi2OxFy
    • HELECTRICITY
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    • H01M4/36Selection of substances as active materials, active masses, active liquids
    • H01M4/58Selection 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
    • H01M4/582Halogenides
    • HELECTRICITY
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    • H01M4/58Selection 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
    • H01M4/5825Oxygenated metallic salts or polyanionic structures, e.g. borates, phosphates, silicates, olivines
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    • H01M4/58Selection 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
    • H01M4/583Carbonaceous material, e.g. graphite-intercalation compounds or CFx
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    • H01M4/62Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
    • H01M4/621Binders
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Inorganic Chemistry (AREA)
  • Composite Materials (AREA)
  • Manufacturing & Machinery (AREA)
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  • Crystallography & Structural Chemistry (AREA)
  • Battery Electrode And Active Subsutance (AREA)
  • Secondary Cells (AREA)
CN201580007499.1A 2014-02-07 2015-01-26 非水电解质二次电池的负极材料用的负极活性物质、非水电解质二次电池用负极电极、以及非水电解质二次电池 Active CN105981204B (zh)

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JP2014022159A JP6082355B2 (ja) 2014-02-07 2014-02-07 非水電解質二次電池の負極材用の負極活物質、及び非水電解質二次電池用負極電極、並びに非水電解質二次電池
JP2014-022159 2014-02-07
PCT/JP2015/000321 WO2015118830A1 (ja) 2014-02-07 2015-01-26 非水電解質二次電池の負極材用の負極活物質、及び非水電解質二次電池用負極電極、並びに非水電解質二次電池

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CN105981204B true CN105981204B (zh) 2019-10-11

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US (1) US10388950B2 (enExample)
EP (1) EP3104440B1 (enExample)
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CN (1) CN105981204B (enExample)
WO (1) WO2015118830A1 (enExample)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3171432B1 (en) * 2014-07-15 2020-12-16 Shin-Etsu Chemical Co., Ltd. Negative electrode material for nonaqueous electrolyte secondary battery and method for producing negative electrode active material particle
CN107210442B (zh) * 2015-01-28 2020-06-16 三洋电机株式会社 非水电解质二次电池用负极活性物质和非水电解质二次电池
WO2017051500A1 (ja) * 2015-09-24 2017-03-30 パナソニックIpマネジメント株式会社 非水電解質二次電池用負極活物質及び負極
JP6433442B2 (ja) * 2016-01-04 2018-12-05 信越化学工業株式会社 非水電解質二次電池用負極活物質、非水電解質二次電池用負極、及び非水電解質二次電池、並びに非水電解質二次電池用負極活物質の製造方法
JP6746526B2 (ja) * 2016-04-06 2020-08-26 信越化学工業株式会社 負極活物質、混合負極活物質材料、及び負極活物質の製造方法
JP6765997B2 (ja) 2017-03-13 2020-10-07 信越化学工業株式会社 負極材及びその負極材の製造方法、並びに混合負極材
JP6756301B2 (ja) * 2017-04-28 2020-09-16 トヨタ自動車株式会社 負極活物質粒子、負極、リチウムイオン二次電池、および負極活物質粒子の製造方法
KR102285979B1 (ko) * 2017-09-11 2021-08-04 주식회사 엘지에너지솔루션 음극 활물질, 상기 음극 활물질을 포함하는 음극, 및 상기 음극을 포함하는 이차 전지
HUE065895T2 (hu) * 2017-12-08 2024-06-28 Lg Energy Solution Ltd Negatív elektróda aktív anyag lítium szekunder akkumulátorhoz, és eljárás annak elõállítására
CN108199031B (zh) * 2018-01-16 2020-04-10 毛伟波 一种高非晶态一氧化硅材料、制备方法及其用途
US12381209B2 (en) 2018-10-18 2025-08-05 Panasonic Intellectual Property Management Co., Ltd. Negative electrode active material for nonaqueous electrolyte secondary battery, negative electrode, and nonaqueous electrolyte secondary battery
CN111276675B (zh) * 2018-12-04 2021-10-08 中国科学院宁波材料技术与工程研究所 改性硅碳材料及其制备方法、应用
US11469407B2 (en) * 2018-12-20 2022-10-11 Ppg Industries Ohio, Inc. Battery electrode coatings applied by waterborne electrodeposition
CN111403693B (zh) 2019-01-02 2021-08-13 宁德新能源科技有限公司 负极活性材料和使用其的负极极片、电化学装置和电子装置
CN109888217B (zh) * 2019-02-20 2021-08-03 宁德新能源科技有限公司 负极活性材料和使用其的负极极片以及电化学和电子装置
US11611062B2 (en) * 2019-04-26 2023-03-21 Ppg Industries Ohio, Inc. Electrodepositable battery electrode coating compositions having coated active particles
CN112467108B (zh) * 2020-11-26 2022-04-12 东莞理工学院 一种多孔硅氧复合材料及其制备方法和应用
EP4378930B1 (en) * 2021-08-02 2025-12-10 The University of Tokyo Fluoropolyether compound
JPWO2023053888A1 (enExample) * 2021-09-28 2023-04-06
CN116745936A (zh) * 2021-10-27 2023-09-12 宁德时代新能源科技股份有限公司 改性硅材料及制备方法、负极材料、负极极片、二次电池、电池模块、电池包及用电装置
WO2023074934A1 (ko) * 2021-10-27 2023-05-04 삼성에스디아이 주식회사 리튬 이차 전지용 음극 활물질, 이를 포함하는 리튬 이차 전지용 음극, 및 이를 포함하는 리튬 이차 전지
CN114975967A (zh) * 2022-06-29 2022-08-30 宁波杉杉新材料科技有限公司 一种预锂化硅氧复合材料及其制备方法、负极极片、电池和应用

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103022438A (zh) * 2011-09-27 2013-04-03 株式会社东芝 负极活性材料及其制备方法、非水电解质二次电池单元和电池组
WO2013054481A1 (ja) * 2011-10-12 2013-04-18 株式会社豊田自動織機 リチウムイオン二次電池、リチウムイオン二次電池用負極及びリチウムイオン二次電池用負極材料

Family Cites Families (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5180211A (ja) * 1975-01-08 1976-07-13 Hitachi Ltd Fudogatajikihetsudokumitatetai
JP2997741B2 (ja) 1992-07-29 2000-01-11 セイコーインスツルメンツ株式会社 非水電解質二次電池及びその製造方法
JP2001185127A (ja) 1999-12-24 2001-07-06 Fdk Corp リチウム2次電池
JP2002042806A (ja) 2000-07-19 2002-02-08 Japan Storage Battery Co Ltd 非水電解質二次電池
JP2004071542A (ja) * 2002-06-14 2004-03-04 Japan Storage Battery Co Ltd 負極活物質、それを用いた負極、それを用いた非水電解質電池、ならびに負極活物質の製造方法
JP4367311B2 (ja) 2004-10-18 2009-11-18 ソニー株式会社 電池
JP4994634B2 (ja) 2004-11-11 2012-08-08 パナソニック株式会社 リチウムイオン二次電池用負極、その製造方法、およびそれを用いたリチウムイオン二次電池
JP4533822B2 (ja) 2005-08-24 2010-09-01 株式会社東芝 非水電解質電池および負極活物質
JP4911990B2 (ja) 2006-02-27 2012-04-04 三洋電機株式会社 リチウム二次電池用負極及びその製造方法並びにリチウム二次電池
CN1913200B (zh) * 2006-08-22 2010-05-26 深圳市贝特瑞电子材料有限公司 锂离子电池硅碳复合负极材料及其制备方法
JP2008177346A (ja) 2007-01-18 2008-07-31 Sanyo Electric Co Ltd エネルギー貯蔵デバイス
JP5108355B2 (ja) 2007-03-30 2012-12-26 パナソニック株式会社 リチウム二次電池用負極およびそれを備えたリチウム二次電池、ならびにリチウム二次電池用負極の製造方法
KR100913177B1 (ko) 2007-09-17 2009-08-19 삼성에스디아이 주식회사 리튬 이차 전지용 음극 활물질 및 이의 제조 방법
JP5196149B2 (ja) 2008-02-07 2013-05-15 信越化学工業株式会社 非水電解質二次電池用負極材及びその製造方法並びにリチウムイオン二次電池及び電気化学キャパシタ
JP5555978B2 (ja) 2008-02-28 2014-07-23 信越化学工業株式会社 非水電解質二次電池用負極活物質、及びそれを用いた非水電解質二次電池
JP5329858B2 (ja) 2008-07-10 2013-10-30 株式会社東芝 非水電解質二次電池用負極活物質の製造方法およびこれによって得られる非水電解質電池用負極活物質
JP2010092830A (ja) 2008-09-11 2010-04-22 Sanyo Electric Co Ltd 非水電解質二次電池
JP5704633B2 (ja) 2009-09-29 2015-04-22 Necエナジーデバイス株式会社 二次電池
CN102714307B (zh) 2009-12-21 2014-12-10 株式会社丰田自动织机 非水系二次电池用负极活性物质及其制造方法
JP5454353B2 (ja) * 2010-05-21 2014-03-26 信越化学工業株式会社 非水電解質二次電池負極材用珪素酸化物及びその製造方法、ならびに負極、リチウムイオン二次電池及び電気化学キャパシタ
JP5729163B2 (ja) 2011-06-24 2015-06-03 トヨタ自動車株式会社 負極活物質及び負極活物質の製造方法
JP5675540B2 (ja) * 2011-09-22 2015-02-25 信越化学工業株式会社 非水電解液二次電池用負極材及び非水電解液二次電池
JP5977831B2 (ja) * 2011-10-24 2016-08-24 エルジー・ケム・リミテッド 負極活物質の製造方法、その負極活物質、及びそれを備えるリチウム二次電池
KR101579641B1 (ko) * 2012-05-30 2015-12-22 주식회사 엘지화학 리튬 이차전지용 음극 활물질 및 이를 포함하는 리튬 이차전지
JP5835107B2 (ja) * 2012-05-31 2015-12-24 株式会社豊田自動織機 非水電解質二次電池
JP5447618B2 (ja) * 2012-08-28 2014-03-19 株式会社豊田自動織機 非水電解質二次電池用負極材料、その製造方法、非水電解質二次電池用負極及び非水電解質二次電池
CN102983313B (zh) * 2012-12-05 2016-01-27 奇瑞汽车股份有限公司 硅碳复合材料及其制备方法、锂离子电池
WO2015065095A1 (ko) * 2013-10-31 2015-05-07 주식회사 엘지화학 리튬 이차전지용 음극활물질 및 그 제조방법
EP3171432B1 (en) 2014-07-15 2020-12-16 Shin-Etsu Chemical Co., Ltd. Negative electrode material for nonaqueous electrolyte secondary battery and method for producing negative electrode active material particle

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103022438A (zh) * 2011-09-27 2013-04-03 株式会社东芝 负极活性材料及其制备方法、非水电解质二次电池单元和电池组
WO2013054481A1 (ja) * 2011-10-12 2013-04-18 株式会社豊田自動織機 リチウムイオン二次電池、リチウムイオン二次電池用負極及びリチウムイオン二次電池用負極材料

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US10388950B2 (en) 2019-08-20
JP2015149221A (ja) 2015-08-20
US20160344019A1 (en) 2016-11-24
KR20160118261A (ko) 2016-10-11
WO2015118830A1 (ja) 2015-08-13
EP3104440A4 (en) 2017-09-27
EP3104440B1 (en) 2019-10-02
JP6082355B2 (ja) 2017-02-15
KR102256230B1 (ko) 2021-05-27
EP3104440A1 (en) 2016-12-14
CN105981204A (zh) 2016-09-28

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