JP7355942B2 - 二次電池、その製造方法、該二次電池を含む電池モジュール、電池パック及び装置 - Google Patents
二次電池、その製造方法、該二次電池を含む電池モジュール、電池パック及び装置 Download PDFInfo
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- JP7355942B2 JP7355942B2 JP2022542212A JP2022542212A JP7355942B2 JP 7355942 B2 JP7355942 B2 JP 7355942B2 JP 2022542212 A JP2022542212 A JP 2022542212A JP 2022542212 A JP2022542212 A JP 2022542212A JP 7355942 B2 JP7355942 B2 JP 7355942B2
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- 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
- H01M4/583—Carbonaceous material, e.g. graphite-intercalation compounds or CFx
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- H01M4/04—Processes of manufacture in general
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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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- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/139—Processes of manufacture
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- H—ELECTRICITY
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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
- H01M4/485—Selection 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
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- H—ELECTRICITY
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- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/50—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese
- 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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- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- 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
- 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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- 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
- H01M2004/021—Physical characteristics, e.g. porosity, surface area
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- H—ELECTRICITY
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- H01M4/02—Electrodes composed of, or comprising, active material
- H01M2004/026—Electrodes composed of, or comprising, active material characterised by the polarity
- H01M2004/027—Negative electrodes
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- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M2004/026—Electrodes composed of, or comprising, active material characterised by the polarity
- H01M2004/028—Positive electrodes
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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
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Description
Claims (18)
- 負極、正極、セパレータ及び電解質を含み、前記負極は負極板を含み、前記負極板は、負極集電体と、前記負極集電体の少なくとも一方の面に設けられて黒鉛を包含する負極活物質を含む負極膜層と、を含み、前記黒鉛は人造黒鉛を含み、前記負極活物質の体積平均粒径Dv50は、8μm≦Dv50≦16μmを満たし、前記負極活物質の粒度スパン(D v 90-D v 10)/D v 50が、1.0≦(D v 90-D v 10)/D v 50≦1.4を満たし、前記負極膜層の面密度(AD)は、0.09kg/m2≦AD≦0.117kg/m2を満たし、前記負極膜層の圧密密度(PD)は、1.53g/cm3≦PD≦1.68g/cm3を満たし、前記負極板は、前記負極板とリチウム金属片でコイン電池を構成し、且つ前記コイン電池を0.05Cで5.0mVまで放電する場合、その容量増分曲線V-dQ/dVが0.055V~0.085Vの所に黒鉛の3次リチウム吸蔵の相転移ピークを有することを満たす、リチウムイオン二次電池。
- 前記容量増分曲線V-dQ/dVは、0.057V~0.077Vの所に黒鉛の3次吸蔵リチウム吸蔵の相移転ピークを有する、請求項1に記載の二次電池。
- 前記黒鉛の3次リチウム吸蔵の相移転ピークのピーク強度は、-3Ah/V/g~-15Ah/V/gである、請求項1または2に記載の二次電池。
- 前記負極活物質の体積平均粒径Dv50は、9.5μm≦Dv50≦14.5μmである、請求項1~3のいずれか一項に記載の二次電池。
- 前記負極膜層の面密度(AD)は、0.094kg/m2≦AD≦0.107kg/m2を満たす、請求項1~4のいずれか一項に記載の二次電池。
- 前記負極活物質における前記人造黒鉛の質量比率≧60%である、請求項1~5のいずれか一項に記載の二次電池。
- 前記負極活物質は、天然黒鉛を含み、前記負極活物質における前記天然黒鉛の質量比率≦40%である、請求項1~6のいずれか一項に記載の二次電池。
- 前記負極活物質は、二次粒子を含み、前記負極活物質における前記二次粒子の個数比率≧60%である、請求項1~7のいずれか一項に記載の二次電池。
- 前記負極活物質の粒度均一性(Uniformity)は、0.3~0.4である、請求項1~8のいずれか一項に記載の二次電池。
- 前記負極活物質は、さらに、
(1)前記負極活物質の粒度スパン(Dv90-Dv10)/Dv50が、1.1≦(Dv90-Dv10)/Dv50≦1.3を満たすことと、
(2)前記負極活物質の黒鉛化度が93%~95%であることと、
(3)前記負極活物質の粉体OI値が2.5~4.5であることと、
(4)前記負極活物質のタップ密度が0.8g/cm3~1.2g/cm3であることと、
(5)前記負極活物質の30kN圧における粉体圧密密度が1.65g/cm3~1.85g/cm3であることと、
(6)前記負極活物質のグラム容量が350mAh/g~360mAh/gであることとのうちの1つ又は複数を満たす、請求項1~9のいずれか一項に記載の二次電池。 - 前記負極被膜層は、
(1)前記負極膜層の多孔率Pが、25%≦P≦45%を満たすことと、
(2)前記負極膜層と前記負極集電体との間の接着力Fが、4.5N/m≦F≦15N/mを満たす、請求項1~10のいずれか一項に記載の二次電池。 - 前記正極は正極板を含み、前記正極板は、正極集電体と、前記正極集電体の少なくとも一方の面に設けられて正極活物質を含む正極膜層と、を含み、前記正極活物質はニッケルコバルトマンガン酸リチウム、ニッケルコバルトアルミニウム酸リチウム、リン酸鉄リチウム、リン酸鉄リチウムと炭素との複合材料のうちの1種又は複数種を含む、請求項1~11のいずれか一項に記載の二次電池。
- 請求項1~12のいずれか一項に記載の二次電池を含む電池モジュール。
- 請求項13に記載の電池モジュールを含む電池パック。
- 前記負極活物質における前記人造黒鉛の質量比率は80%~100%である、請求項6に記載の二次電池。
- 前記負極活物質における前記天然黒鉛の質量比率は10%~30%である、請求項7に記載の二次電池。
- 前記負極活物質における前記二次粒子の個数比率は80%~100%である、請求項8に記載の二次電池。
- 前記負極活物質の粒度均一性(Uniformity)は0.31~0.36である、請求項9に記載の二次電池。
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PCT/CN2020/106076 WO2022021273A1 (zh) | 2020-07-31 | 2020-07-31 | 二次电池、其制备方法及含有该二次电池的电池模块、电池包和装置 |
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JP2023511046A JP2023511046A (ja) | 2023-03-16 |
JPWO2022021273A5 JPWO2022021273A5 (ja) | 2023-04-18 |
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US (1) | US11658335B2 (ja) |
EP (1) | EP4167324A4 (ja) |
JP (1) | JP7355942B2 (ja) |
KR (1) | KR102599831B1 (ja) |
CN (1) | CN115004418B (ja) |
WO (1) | WO2022021273A1 (ja) |
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CN115172745B (zh) * | 2022-09-07 | 2022-12-09 | 蜂巢能源科技股份有限公司 | 一种获取负极活性材料的方法及负极极片和锂离子电池 |
CN116666729A (zh) * | 2022-09-26 | 2023-08-29 | 欣旺达电动汽车电池有限公司 | 二次电池及用电装置 |
CN116960278B (zh) * | 2023-09-20 | 2024-01-30 | 苏州清陶新能源科技有限公司 | 负极极片及其制备方法 |
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CN105762336A (zh) | 2014-12-19 | 2016-07-13 | 江苏华东锂电技术研究院有限公司 | 负极复合材料及其制备方法以及锂离子电池 |
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CN104659414B (zh) * | 2005-10-20 | 2019-04-12 | 三菱化学株式会社 | 锂二次电池以及其中使用的非水电解液 |
US20110117445A1 (en) * | 2009-11-17 | 2011-05-19 | Uchicago Argonne, Llc | Electrolytes for lithium and lithium-ion batteries |
JP5454272B2 (ja) * | 2010-03-23 | 2014-03-26 | 住友ベークライト株式会社 | リチウムイオン二次電池用炭素材、リチウムイオン二次電池用負極材およびリチウムイオン二次電池 |
JP6398171B2 (ja) * | 2013-10-11 | 2018-10-03 | 株式会社村田製作所 | リチウムイオン二次電池、電池パック、電動車両、電力貯蔵システム、電動工具および電子機器 |
KR102095008B1 (ko) * | 2016-09-13 | 2020-03-30 | 주식회사 엘지화학 | 음극, 이를 포함하는 이차전지, 전지 모듈 및 전지 팩 |
CN107768708A (zh) * | 2017-08-28 | 2018-03-06 | 天津力神电池股份有限公司 | 锂电池石墨负极材料循环性能的快速评价方法 |
KR102165885B1 (ko) * | 2017-11-28 | 2020-10-14 | 주식회사 엘지화학 | 음극 활물질, 이를 포함하는 음극 및 리튬 이차전지 |
KR102277734B1 (ko) * | 2018-02-26 | 2021-07-16 | 주식회사 엘지에너지솔루션 | 리튬 이차전지용 음극 활물질, 이를 포함하는 리튬 이차전지용 음극 및 리튬 이차전지 |
CN108807959B (zh) * | 2018-04-28 | 2019-04-23 | 宁德时代新能源科技股份有限公司 | 二次电池 |
CN108807848B (zh) * | 2018-05-11 | 2019-10-08 | 宁德时代新能源科技股份有限公司 | 负极极片及含有它的二次电池 |
CN108807849B (zh) * | 2018-05-16 | 2019-11-15 | 宁德时代新能源科技股份有限公司 | 负极极片及含有它的二次电池 |
CN109286020B (zh) * | 2018-08-21 | 2021-03-30 | 宁德时代新能源科技股份有限公司 | 负极极片及二次电池 |
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WO2011125577A1 (ja) | 2010-03-31 | 2011-10-13 | 住友金属工業株式会社 | 改質天然黒鉛粒子およびその製造方法 |
CN105762336A (zh) | 2014-12-19 | 2016-07-13 | 江苏华东锂电技术研究院有限公司 | 负极复合材料及其制备方法以及锂离子电池 |
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US20220336844A1 (en) | 2022-10-20 |
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KR20220116216A (ko) | 2022-08-22 |
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