JP6861401B2 - 正極活物質、および、電池 - Google Patents
正極活物質、および、電池 Download PDFInfo
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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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- H01M10/0566—Liquid materials
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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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- H01M4/36—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
- 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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- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
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- C01P2002/70—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data
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- C01P2006/40—Electric properties
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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
- H01M2004/028—Positive electrodes
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- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/30—Batteries in portable systems, e.g. mobile phone, laptop
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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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- 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
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Description
LixAyMezOαFβ・・・式(1)
実施の形態1における正極活物質は、空間群FM3−Mに属する結晶構造を有し、下記の組成式(1)により表される化合物を含む正極活物質。
LixAyMezOαFβ・・・式(1)
1.7≦x+y≦2.2、
0<y≦0.2、
0.8≦z≦1.3、
1≦α≦2.5、
0.5≦β≦2、
を満たす。
以下に、実施の形態1の正極活物質に含まれる上述の化合物の製造方法の一例が、説明される。
以下、実施の形態2が説明される。なお、上述の実施の形態1と重複する説明は、適宜、省略される。
[正極活物質の作製]
LiFとNaFとLi2OとMn2O3をLiF/NaF/Li2O/Mn2O3=0.95/0.05/0.5/0.5モル比でそれぞれ秤量した。
次に、70質量部の上述の化合物と、20質量部の導電剤と、10質量部のポリフッ化ビニリデン(PVDF)と、適量の2−メチルピロリドン(NMP)とを、混合した。これにより、正極合剤スラリーを得た。
上述の実施例1から、Li/A/Meの比率および、O/Fの比率を、それぞれ、変えた。
公知の手法を用いて、コバルト酸リチウム(LiCoO2)を得た。
LiFとLi2OとMn2O3をLiF/Li2O/Mn2O3=1.0/0.5/0.5モル比でそれぞれ秤量した。
公知の手法を用いてコバルト酸リチウム(LiCoO2)を得た。
正極に対する電流密度を0.05mA/cm2に設定し、5.2Vの電圧に達するまで、実施例1の電池を充電した。
11 ケース
12 正極集電体
13 正極活物質層
14 セパレータ
15 封口板
16 負極集電体
17 負極活物質層
18 ガスケット
21 正極
22 負極
Claims (7)
- 空間群FM3−Mに属する結晶構造を有し、下記の組成式(1)により表される化合物を含む、
リチウムイオン二次電池用正極活物質。
LixAyMezOαFβ・・・式(1)
ここで、前記Aは、NaまたはKであり、
かつ、前記Meは、MnとCoとNiとから選ばれる一種の元素であり、
かつ、下記の条件、
1.7≦x+y≦2.2、
0<y≦0.2、
0.8≦z≦1.3、
1≦α≦2.5、
0.5≦β≦2、
x+y+z=α+β=3、
を満たす。 - 前記化合物を、90重量%以上の割合で、含む、
請求項1に記載のリチウムイオン二次電池用正極活物質。 - 前記Meは、MnとCoから選ばれる一種の元素である、
請求項1または2に記載のリチウムイオン二次電池用正極活物質。 - 0<y≦0.1、を満たす、
請求項1から3のいずれかに記載のリチウムイオン二次電池用正極活物質。 - 1.8≦x≦1.99、
0.01≦y≦0.2、を満たす、
請求項1から3のいずれかに記載のリチウムイオン二次電池用正極活物質。 - z=1、かつ、α=2、かつ、β=1、を満たす、
請求項1から5のいずれかに記載のリチウムイオン二次電池用正極活物質。 - 請求項1から6のいずれかに記載のリチウムイオン二次電池用正極活物質を含む正極と、
負極と、
電解質と、
を備え、
前記負極は、リチウムを吸蔵および放出する特性を有する負極活物質を含み、
前記電解質は、非水電解液である、
リチウムイオン二次電池。
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015182645 | 2015-09-16 | ||
| JP2015182645 | 2015-09-16 | ||
| PCT/JP2016/003950 WO2017047017A1 (ja) | 2015-09-16 | 2016-08-30 | 正極活物質、および、電池 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPWO2017047017A1 JPWO2017047017A1 (ja) | 2018-07-05 |
| JP6861401B2 true JP6861401B2 (ja) | 2021-04-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2017540475A Active JP6861401B2 (ja) | 2015-09-16 | 2016-08-30 | 正極活物質、および、電池 |
Country Status (5)
| Country | Link |
|---|---|
| US (2) | US10811671B2 (ja) |
| EP (1) | EP3352262B1 (ja) |
| JP (1) | JP6861401B2 (ja) |
| CN (1) | CN107431203B (ja) |
| WO (1) | WO2017047017A1 (ja) |
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| EP3327835B1 (en) * | 2015-07-23 | 2019-09-11 | Panasonic Intellectual Property Management Co., Ltd. | Positive electrode active material and battery |
| EP3352262B1 (en) * | 2015-09-16 | 2019-10-16 | Panasonic Intellectual Property Management Co., Ltd. | Positive electrode active material and battery |
| CN109309215A (zh) * | 2018-08-02 | 2019-02-05 | 中南大学 | 一种改性富锂锰基正极材料及其制备方法 |
| WO2023034137A1 (en) | 2021-08-31 | 2023-03-09 | Wildcat Discovery Technologies, Inc. | Cathode with coated disordered rocksalt material |
| CN118922961A (zh) * | 2022-03-31 | 2024-11-08 | 松下知识产权经营株式会社 | 非水电解质二次电池用正极活性物质 |
| WO2023235473A1 (en) | 2022-06-03 | 2023-12-07 | Wildcat Discovery Technologies, Inc. | Disordered rocksalt material and method of forming it |
| JP2025518068A (ja) | 2022-06-03 | 2025-06-12 | ワイルドキャット・ディスカバリー・テクノロジーズ・インコーポレイテッド | 不規則岩塩型カソード材料及びその製造方法 |
| CN120072934B (zh) * | 2025-04-27 | 2025-08-08 | 广东石油化工学院 | 钒基电极材料及其制备方法和锂离子电池正极极片 |
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-
2016
- 2016-08-30 EP EP16845895.8A patent/EP3352262B1/en active Active
- 2016-08-30 JP JP2017540475A patent/JP6861401B2/ja active Active
- 2016-08-30 CN CN201680015233.6A patent/CN107431203B/zh active Active
- 2016-08-30 WO PCT/JP2016/003950 patent/WO2017047017A1/ja not_active Ceased
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- 2017-11-14 US US15/811,684 patent/US10811671B2/en active Active
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|---|---|
| EP3352262A1 (en) | 2018-07-25 |
| WO2017047017A1 (ja) | 2017-03-23 |
| US20180090746A1 (en) | 2018-03-29 |
| CN107431203A (zh) | 2017-12-01 |
| JPWO2017047017A1 (ja) | 2018-07-05 |
| US20210005883A1 (en) | 2021-01-07 |
| EP3352262A4 (en) | 2018-08-15 |
| CN107431203B (zh) | 2021-08-20 |
| US10811671B2 (en) | 2020-10-20 |
| EP3352262B1 (en) | 2019-10-16 |
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