JP5639533B2 - 非水電解質二次電池用正極活物質、非水電解質二次電池、電池パック及び非水電解質二次電池用正極活物質の製造方法 - Google Patents
非水電解質二次電池用正極活物質、非水電解質二次電池、電池パック及び非水電解質二次電池用正極活物質の製造方法 Download PDFInfo
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- H01M10/4257—Smart batteries, e.g. electronic circuits inside the housing of the cells or batteries
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- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
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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
- H01M4/50—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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- H01M4/36—Selection of substances as active materials, active masses, active liquids
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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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- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/102—Primary casings, jackets or wrappings of a single cell or a single battery characterised by their shape or physical structure
- H01M50/105—Pouches or flexible bags
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- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/116—Primary casings, jackets or wrappings of a single cell or a single battery characterised by the material
- H01M50/124—Primary casings, jackets or wrappings of a single cell or a single battery characterised by the material having a layered structure
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- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
- H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
- H01M50/211—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for pouch cells
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- H—ELECTRICITY
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- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/574—Devices or arrangements for the interruption of current
- H01M50/581—Devices or arrangements for the interruption of current in response to temperature
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- C—CHEMISTRY; METALLURGY
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- H01M2200/00—Safety devices for primary or secondary 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
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- 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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- 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
前記一般式中のa、b、c、d、e及びxは、0.2<a≦0.33、0<b≦0.67、0=c<1あるいは0.2≦c<1、0≦d<1、0≦e<1、0.2≦x≦1−bの値であり、
下式(1)を満たす非水電解質二次電池用正極活物質が提供される。
前記一般式中のa、b、c、d、e及びxは、0.2<a≦0.33、0<b≦0.67、0=c<1あるいは0.2≦c<1、0≦d<1、0≦e<1、0.2≦x≦1−bの値で、かつ下式(1)を満たす非水電解質二次電池用正極活物質であり、
第1実施形態における正極活物質は、一般式 Li(LiaMnbNicCodFee)O2−xFxで表される非水電解質二次電池用正極活物質であって、
前記一般式中のa、b、c、d、e及びxは、0.2<a≦0.33、0<b≦0.67、0=c<1あるいは0.2≦c<1、0≦d<1、0≦e<1、0.2≦x≦1−bの値であり、
下式(1)を満たすことを特徴とする。
第2実施形態における、第1実施形態の非水電解質二次電池用正極活物質の製造方法について以下に説明する。
第3実施形態に係る非水電解質二次電池を説明する。
外装材2は、厚さ0.5mm以下のラミネートフィルムから形成される。或いは、外装材は厚さ1.0mm以下の金属製容器が用いられる。金属製容器は、厚さ0.5mm以下であることがより好ましい。
負極3は、集電体3aと、この集電体3aの片面または両面に形成され、活物質、導電剤及び結着剤を含む負極層3bとを備える。
正極5は、集電体5aと、この集電体5aの片面または両面に形成され、活物質、導電剤及び結着剤を含む正極層5bとを備える。
非水電解質は、例えば電解質を有機溶媒に溶解することにより調製される液状非水電解質、または液状電解質と高分子材料を複合化したゲル状非水電解質を用いることができる。
セパレータ4は、例えばポリエチレン、ポリプロピレン、セルロース、もしくはポリフッ化ビニリデン(PVdF)を含む多孔質フィルム、または合成樹脂製不織布を用いることができる。好ましい多孔質フィルムは、ポリエチレンまたはポリプロピレンから作られ、一定温度において溶融し、電流を遮断することが可能であるために安全性を向上できる。
次に、実施形態に係る電池パックを詳細に説明する。
前記一般式において、a=0.2、b=0.6、c=0.2、d=e=0、x=0.2とした、Li1.2Ni0.2Mn0.6O1.8F0.2を正極活物質として合成した。このとき、前記式(1)の値は、3.67となる。この正極活物質88質量%を、導電材としてアセチレンブラック6重量%、ポリフッ化ビニリデン(PVdF)6重量%をN−メチルピロリドン(NMP)に加えて混合してスラリーを調整した。このスラリーを厚さ15μmのアルミニウム箔からなる集電体に両面に塗布した後、乾燥し、プレスすることにより試験用電極を作製した。
他の実施例として、表1に記載した正極活物質を合成した。実施例2と出発材料の組成を変更した以外は、電極作製方法、評価方法は実施例2と同じである。
(参考例1,2)
参考例として、表1に記載した正極活物質を合成した。実施例2と出発材料の組成を変更した以外は、電極作製方法、評価方法は実施例2と同じである。
比較例として、フッ素を含有しない正極活物質Li1.2Ni0.2Mn0.6O2を合成した(x=0)。その他の電極作製方法、評価方法は実施例1と同様である。
前記一般式において、a=0.2、b=0.6、c=0.2、d=e=0、x=0.05とした、Li1.2Ni0.2 Mn0.6 O1.95 F0.05 を合成した。その他の電極作製方法、評価方法は実施例2と同様である。
前記一般式において、a=0.2、b=0.55、c=0.25、d=e=0、x=0.1とした、Li1.2Ni0.2Mn0.6O1.9 F0.1 を合成した。このとき、前記式(1)の値は4となる。その他の電極作製方法、評価方法は実施例2と同様である。
Claims (8)
- 前記遷移金属水酸化物が共沈法によって合成されることを特徴とする、請求項2に記載の非水電解質二次電池用正極活物質の製造方法。
- 請求項2又は3に記載の製造方法によって製造された非水電解質二次電池用正極活物質。
- 請求項1又は4に記載の正極活物質を含む正極と、
負極活物質を含む負極と、
非水電解質と、
を具備することを特徴とする非水電解質二次電池。 - ラミネートフィルム製の外装材をさらに備えることを特徴とする、請求項5に記載の非水電解質二次電池。
- 請求項6に記載の非水電解質二次電池を一以上備えることを特徴とする電池パック。
- 電気的に接続された複数の前記非水電解質電池を具備し、各非水電解質電池の電圧が検知可能な保護回路をさらに備えることを特徴とする、請求項7に記載の電池パック。
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US13/231,255 US9343711B2 (en) | 2010-09-24 | 2011-09-13 | Positive electrode active material for non-aqueous electrolyte secondary battery, non-aqueous electrolyte secondary battery, battery pack, and method for manufacturing positive electrode active material for non-aqueous electrolyte secondary battery |
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KR101502658B1 (ko) * | 2012-05-22 | 2015-03-13 | 주식회사 엘지화학 | 리튬 이차 전지용 양극 활물질 조성물, 이의 제조방법, 및 이를 포함하는 리튬 이차 전지 |
WO2014042287A1 (ja) | 2012-09-13 | 2014-03-20 | 協和化学工業株式会社 | 緩凝集薄膜酸化マグネシウム粒子 |
JP6252890B2 (ja) * | 2013-08-23 | 2017-12-27 | 日本電気株式会社 | リチウム鉄マンガン系複合酸化物およびそれを用いたリチウムイオン二次電池 |
JP6190213B2 (ja) | 2013-08-28 | 2017-08-30 | 日立マクセル株式会社 | 電池パック |
WO2015059779A1 (ja) * | 2013-10-23 | 2015-04-30 | 株式会社日立製作所 | リチウムイオン二次電池用正極材料およびリチウムイオン二次電池 |
CN107431201B (zh) * | 2015-07-23 | 2021-06-01 | 松下知识产权经营株式会社 | 正极活性物质和电池 |
US10727532B2 (en) | 2015-12-15 | 2020-07-28 | Gs Yuasa International Ltd. | Positive active material for lithium secondary battery, method for producing precursor of positive active material, method for producing positive active material, positive electrode for lithium secondary battery, and lithium secondary battery |
US10280092B2 (en) * | 2016-07-28 | 2019-05-07 | Wildcat Discovery Technologies, Inc | Oxides for high energy cathode materials |
JP6844156B2 (ja) * | 2016-09-08 | 2021-03-17 | 株式会社Gsユアサ | リチウム二次電池用正極活物質、その製造方法、リチウム二次電池用電極、及びリチウム二次電池 |
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WO2018198410A1 (ja) * | 2017-04-24 | 2018-11-01 | パナソニックIpマネジメント株式会社 | 正極活物質、および、電池 |
US10719606B2 (en) * | 2018-02-23 | 2020-07-21 | Infineon Technologies Ag | Security processor for an embedded system |
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JP2005251716A (ja) * | 2004-02-05 | 2005-09-15 | Nichia Chem Ind Ltd | 非水電解質二次電池用正極活物質、非水電解質二次電池用正極合剤および非水電解質二次電池 |
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