WO2023053842A1 - 二次電池用負極及び二次電池 - Google Patents

二次電池用負極及び二次電池 Download PDF

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Publication number
WO2023053842A1
WO2023053842A1 PCT/JP2022/033075 JP2022033075W WO2023053842A1 WO 2023053842 A1 WO2023053842 A1 WO 2023053842A1 JP 2022033075 W JP2022033075 W JP 2022033075W WO 2023053842 A1 WO2023053842 A1 WO 2023053842A1
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WO
WIPO (PCT)
Prior art keywords
negative electrode
mixture layer
secondary battery
electrode mixture
voids
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2022/033075
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
明宏 谷口
基浩 坂田
薫 井上
健祐 名倉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Intellectual Property Management Co Ltd
Original Assignee
Panasonic Intellectual Property Management Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Panasonic Intellectual Property Management Co Ltd filed Critical Panasonic Intellectual Property Management Co Ltd
Priority to JP2023550490A priority Critical patent/JPWO2023053842A1/ja
Priority to US18/695,164 priority patent/US20240396018A1/en
Priority to CN202280064589.4A priority patent/CN117999668A/zh
Priority to EP22875714.2A priority patent/EP4411870A4/en
Publication of WO2023053842A1 publication Critical patent/WO2023053842A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • 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
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/362—Composites
    • H01M4/364—Composites as mixtures
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • 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
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H01M4/133—Electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx
    • 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
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H01M4/134—Electrodes based on metals, Si or alloys
    • 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
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/38—Selection of substances as active materials, active masses, active liquids of elements or alloys
    • H01M4/386—Silicon or alloys based on silicon
    • 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
    • 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
    • H01M4/583—Carbonaceous material, e.g. graphite-intercalation compounds or CFx
    • 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
    • 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
    • H01M4/583—Carbonaceous material, e.g. graphite-intercalation compounds or CFx
    • H01M4/587—Carbonaceous material, e.g. graphite-intercalation compounds or CFx for inserting or intercalating light metals
    • 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
    • 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
    • H01M2004/026—Electrodes composed of, or comprising, active material characterised by the polarity
    • H01M2004/027—Negative electrodes
    • 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

Definitions

  • the pore size distribution of the negative electrode mixture layer measured by mercury porosimetry has two peak values R1 and R2.
  • the peak value R1 is preferably 0.5 ⁇ m or more and 1.5 ⁇ m or less in terms of, for example, further suppressing swelling of the negative electrode or further suppressing deterioration in charge-discharge cycle characteristics, and 0.8 ⁇ m. More preferably, the thickness is at least 1.2 ⁇ m or less.
  • the peak value R2 is preferably 2 ⁇ m or more and 10 ⁇ m or less, and more preferably 4 ⁇ m or more and 8 ⁇ m or less, in terms of, for example, further suppressing swelling of the negative electrode or further suppressing deterioration in charge-discharge cycle characteristics. is more preferred.
  • the average particle diameter of the Si-based material is preferably 4 ⁇ m or more, more preferably 4 ⁇ m or more and 12 ⁇ m or less, more preferably 6 ⁇ m or more and 10 ⁇ m or less, in order to further suppress deterioration of charge-discharge cycle characteristics. It is more preferable to have
  • the pore size distribution measured by the mercury intrusion method has two peak values R1 and R2, and A plurality of voids formed inside the negative electrode composite material layer have anisotropic voids having an aspect ratio of 2 or more, which is obtained by dividing the length in the long axis direction by the length in the short axis direction, thereby swelling the negative electrode. can be suppressed, and deterioration of charge-discharge cycle characteristics can be suppressed.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Battery Electrode And Active Subsutance (AREA)
PCT/JP2022/033075 2021-09-30 2022-09-02 二次電池用負極及び二次電池 Ceased WO2023053842A1 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2023550490A JPWO2023053842A1 (https=) 2021-09-30 2022-09-02
US18/695,164 US20240396018A1 (en) 2021-09-30 2022-09-02 Negative electrode for secondary batteries, and secondary battery
CN202280064589.4A CN117999668A (zh) 2021-09-30 2022-09-02 二次电池用负极及二次电池
EP22875714.2A EP4411870A4 (en) 2021-09-30 2022-09-02 Negative electrode for secondary batteries, and secondary battery

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2021-161037 2021-09-30
JP2021161037 2021-09-30

Publications (1)

Publication Number Publication Date
WO2023053842A1 true WO2023053842A1 (ja) 2023-04-06

Family

ID=85780642

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2022/033075 Ceased WO2023053842A1 (ja) 2021-09-30 2022-09-02 二次電池用負極及び二次電池

Country Status (5)

Country Link
US (1) US20240396018A1 (https=)
EP (1) EP4411870A4 (https=)
JP (1) JPWO2023053842A1 (https=)
CN (1) CN117999668A (https=)
WO (1) WO2023053842A1 (https=)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4604191A1 (en) * 2024-02-01 2025-08-20 Hithium Tech HK Limited Negative active particle and preparation method therefor, negative sheet, and cell
WO2025225537A1 (ja) * 2024-04-22 2025-10-30 パナソニックＩｐマネジメント株式会社 負極活物質、負極、および電池

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008186732A (ja) * 2007-01-30 2008-08-14 Nippon Carbon Co Ltd リチウム二次電池用負極活物質、それを使用した負極及び製造方法
JP2013110105A (ja) * 2011-10-24 2013-06-06 Toyota Industries Corp リチウムイオン二次電池用負極及びその負極を用いたリチウムイオン二次電池
JP2013219059A (ja) 2013-07-30 2013-10-24 Sumitomo Bakelite Co Ltd リチウムイオン二次電池用負極活物質、リチウムイオン二次電池用負極合剤、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
JP2016058343A (ja) * 2014-09-12 2016-04-21 凸版印刷株式会社 二次電池用電極
WO2018155155A1 (ja) * 2017-02-21 2018-08-30 日本碍子株式会社 リチウム複合酸化物焼結体板
WO2020175361A1 (ja) * 2019-02-28 2020-09-03 三洋電機株式会社 非水電解質二次電池
WO2021079698A1 (ja) 2019-10-23 2021-04-29 Tdk株式会社 全固体電池

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100818263B1 (ko) * 2006-12-19 2008-03-31 삼성에스디아이 주식회사 다공성 음극 활물질, 그 제조 방법 및 이를 채용한 음극과리튬 전지
JP4998358B2 (ja) * 2008-04-08 2012-08-15 ソニー株式会社 リチウムイオン二次電池用負極およびリチウムイオン二次電池
KR20140105794A (ko) * 2011-12-02 2014-09-02 도요타지도샤가부시키가이샤 리튬 2차 전지와 그 제조 방법
KR102823784B1 (ko) * 2014-07-07 2025-06-20 미쯔비시 케미컬 주식회사 탄소재, 탄소재의 제조 방법 및 탄소재를 사용한 비수계 2 차 전지
EP3683865B1 (en) * 2017-09-14 2023-09-06 Kabushiki Kaisha Toshiba Electrode and nonaqueous electrolyte battery

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008186732A (ja) * 2007-01-30 2008-08-14 Nippon Carbon Co Ltd リチウム二次電池用負極活物質、それを使用した負極及び製造方法
JP2013110105A (ja) * 2011-10-24 2013-06-06 Toyota Industries Corp リチウムイオン二次電池用負極及びその負極を用いたリチウムイオン二次電池
JP2013219059A (ja) 2013-07-30 2013-10-24 Sumitomo Bakelite Co Ltd リチウムイオン二次電池用負極活物質、リチウムイオン二次電池用負極合剤、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
JP2016058343A (ja) * 2014-09-12 2016-04-21 凸版印刷株式会社 二次電池用電極
WO2018155155A1 (ja) * 2017-02-21 2018-08-30 日本碍子株式会社 リチウム複合酸化物焼結体板
WO2020175361A1 (ja) * 2019-02-28 2020-09-03 三洋電機株式会社 非水電解質二次電池
WO2021079698A1 (ja) 2019-10-23 2021-04-29 Tdk株式会社 全固体電池

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP4411870A4

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4604191A1 (en) * 2024-02-01 2025-08-20 Hithium Tech HK Limited Negative active particle and preparation method therefor, negative sheet, and cell
WO2025225537A1 (ja) * 2024-04-22 2025-10-30 パナソニックＩｐマネジメント株式会社 負極活物質、負極、および電池

Also Published As

Publication number Publication date
US20240396018A1 (en) 2024-11-28
EP4411870A4 (en) 2025-06-18
JPWO2023053842A1 (https=) 2023-04-06
EP4411870A1 (en) 2024-08-07
CN117999668A (zh) 2024-05-07

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