WO2018070843A2 - Électrode négative pour batterie rechargeable - Google Patents

Électrode négative pour batterie rechargeable Download PDF

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Publication number
WO2018070843A2
WO2018070843A2 PCT/KR2017/011346 KR2017011346W WO2018070843A2 WO 2018070843 A2 WO2018070843 A2 WO 2018070843A2 KR 2017011346 W KR2017011346 W KR 2017011346W WO 2018070843 A2 WO2018070843 A2 WO 2018070843A2
Authority
WO
WIPO (PCT)
Prior art keywords
negative electrode
desorption
current collecting
secondary battery
current collector
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/KR2017/011346
Other languages
English (en)
Korean (ko)
Other versions
WO2018070843A3 (fr
Inventor
조진현
윤현웅
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.)
LG Chem Ltd
Original Assignee
LG Chem 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
Priority claimed from KR1020170129710A external-priority patent/KR102119705B1/ko
Application filed by LG Chem Ltd filed Critical LG Chem Ltd
Priority to CN201780033688.5A priority Critical patent/CN109196691B/zh
Priority to US16/099,549 priority patent/US11069899B2/en
Priority to PL17859641.7T priority patent/PL3444874T3/pl
Priority to ES17859641T priority patent/ES2955000T3/es
Priority to EP17859641.7A priority patent/EP3444874B1/fr
Publication of WO2018070843A2 publication Critical patent/WO2018070843A2/fr
Publication of WO2018070843A3 publication Critical patent/WO2018070843A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • H01M4/64—Carriers or collectors
    • H01M4/70—Carriers or collectors characterised by shape or form
    • 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
    • H01M4/381—Alkaline or alkaline earth metals elements
    • H01M4/382—Lithium
    • 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
    • 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
    • H01M4/362—Composites
    • H01M4/366—Composites as layered products
    • 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
    • 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
    • H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
    • H01M4/628—Inhibitors, e.g. gassing inhibitors, corrosion inhibitors
    • 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
    • H01M4/64—Carriers or collectors
    • H01M4/66—Selection of materials
    • 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
    • H01M4/64—Carriers or collectors
    • H01M4/66—Selection of materials
    • H01M4/661—Metal or alloys, e.g. alloy coatings
    • 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

  • FIG. 1 is an exploded perspective view illustrating a secondary battery to which an anode for secondary batteries according to an embodiment of the present invention is applied.
  • the electrode 30 may be composed of an anode 20 and a cathode 10.
  • the electrode assembly 120 may have a structure in which the anode 20, the separator 40, and the cathode 10 are alternately stacked.
  • the separator 40 may be located between the anode 20 and the cathode 10, outside the anode 20 and outside the cathode 10.
  • the separator 40 may be formed to completely surround the electrode assembly 110 in which the anode 20, the separator 40, and the cathode 10 are stacked.
  • the negative electrode active material 12 may be formed on the inner surface of the desorption current collecting groove 13 so that the space portion 13a in which the passivation film S is formed is formed in the desorption current collecting groove 13 during the charge / discharge process.
  • the passivation layer may be a solid electrolyte interphase (SEI).
  • the passivation film S positioned on the surface of the negative electrode active material 12 serves as a kinetic barrier to prevent further reduction reactions, thereby preventing or significantly reducing the life of the battery.
  • dead lithium and porous layer stacks which are caused by the breakdown and formation of the passivation layer S, increase cell resistance and decrease cycle life. Can be prevented.
  • a passivation film S may be provided on an outer surface of the negative electrode active material 12 formed in the desorption current collector groove 13. Accordingly, the passivation film S is located on the outer surface of the negative electrode active material 12 from the initial stage of charging and discharging, thereby more effectively preventing or significantly reducing the life of the battery.
  • the secondary battery negative electrode according to an embodiment of the present invention may more specifically, for example, satisfy the conditional expression of 20um ⁇ A ⁇ 60um, 20um ⁇ B ⁇ 60um, and 20um ⁇ C ⁇ 60um.
  • Example 1 5.25 88.57
  • Example 2 5.24 86.65
  • Example 3 5.26 84.15
  • Example 4 5.28 86.57
  • Example 5 5.28 70.57
  • Example 6 5.28 76.57
  • Example 7 5.28 56.57
  • Example 8 5.28 46.57
  • Example 9 5.29 35.78
  • Example 10 5.21 25.23 Comparative Example 1 5.24 20.46
  • the detachment preventing part 15 is formed to protrude from the upper end of the detachment preventing current collecting groove 13 of the negative electrode current collector 11 so that the passivation film S (see FIG. 3) may be prevented from being separated from the detaching preventing current collecting groove 13. Can be. That is, the separation preventing part 15 extends from the upper end of the inner wall 14 of the negative electrode current collector 11 toward the space part 13a of the release preventing current collecting groove 13, and thus the upper side surface part of the passivation film S. By intermittent, the passivation film S may be controlled so as not to be separated from the detachment preventing current collecting groove 13.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Composite Materials (AREA)
  • Manufacturing & Machinery (AREA)
  • Battery Electrode And Active Subsutance (AREA)
  • Cell Electrode Carriers And Collectors (AREA)
  • Secondary Cells (AREA)

Abstract

La présente invention concerne une électrode négative pour une batterie rechargeable. L'électrode négative pour une batterie rechargeable selon la présente invention comprend un collecteur de courant d'électrode négative et un matériau actif d'électrode négative accumulés sur au moins une partie de la surface du collecteur de courant d'électrode négative. De multiples rainures de collecte de courant de prévention de désinsertion dans lesquelles est accumulé le matériau actif d'électrode négative sont formées dans le collecteur de courant d'électrode négative. Le matériau actif d'électrode négative est formé sur les surfaces latérales internes des rainures de collecte de courant de prévention de désinsertion de telle sorte que des parties d'espace ayant des couches de diffusion de masse formées en leur sein sont formées dans les rainures de collecte de courant de prévention de désinsertion pendant un processus de charge/décharge.
PCT/KR2017/011346 2016-10-14 2017-10-13 Électrode négative pour batterie rechargeable Ceased WO2018070843A2 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
CN201780033688.5A CN109196691B (zh) 2016-10-14 2017-10-13 二次电池用负极
US16/099,549 US11069899B2 (en) 2016-10-14 2017-10-13 Negative electrode for secondary battery
PL17859641.7T PL3444874T3 (pl) 2016-10-14 2017-10-13 Elektroda ujemna dla baterii akumulatorowej
ES17859641T ES2955000T3 (es) 2016-10-14 2017-10-13 Electrodo negativo para batería secundaria
EP17859641.7A EP3444874B1 (fr) 2016-10-14 2017-10-13 Électrode négative pour batterie rechargeable

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR10-2016-0133470 2016-10-14
KR20160133470 2016-10-14
KR1020170129710A KR102119705B1 (ko) 2016-10-14 2017-10-11 이차전지용 음극
KR10-2017-0129710 2017-10-11

Publications (2)

Publication Number Publication Date
WO2018070843A2 true WO2018070843A2 (fr) 2018-04-19
WO2018070843A3 WO2018070843A3 (fr) 2018-07-12

Family

ID=61905693

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2017/011346 Ceased WO2018070843A2 (fr) 2016-10-14 2017-10-13 Électrode négative pour batterie rechargeable

Country Status (5)

Country Link
CN (1) CN109196691B (fr)
ES (1) ES2955000T3 (fr)
HU (1) HUE062853T2 (fr)
PL (1) PL3444874T3 (fr)
WO (1) WO2018070843A2 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114709425A (zh) * 2022-04-15 2022-07-05 东南大学 一种具有微坑阵列的金属集流体的制备方法及应用

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100366345B1 (ko) * 2001-01-03 2002-12-31 삼성에스디아이 주식회사 리튬-황 전지용 음극 극판
KR100582558B1 (ko) * 2004-11-25 2006-05-22 한국전자통신연구원 스페이서가 구비된 리튬금속 고분자 이차전지용 리튬금속음극 및 그 제조 방법
KR100582557B1 (ko) * 2004-11-25 2006-05-22 한국전자통신연구원 표면 패터닝된 음극 집전체로 이루어지는 리튬금속 고분자이차전지용 음극 및 그 제조 방법
KR101147410B1 (ko) * 2010-07-16 2012-05-23 넥스콘 테크놀러지 주식회사 전극 제조 방법
TW201444159A (zh) * 2013-03-08 2014-11-16 Sango Co Ltd 鋰二次電池用負極材料及其製造方法
KR101532136B1 (ko) * 2013-06-26 2015-06-29 (주)오렌지파워 음극, 이의 제조 방법 및 이를 포함하는 이차 전지

Also Published As

Publication number Publication date
WO2018070843A3 (fr) 2018-07-12
PL3444874T3 (pl) 2023-10-23
HUE062853T2 (hu) 2023-12-28
ES2955000T3 (es) 2023-11-28
CN109196691A (zh) 2019-01-11
CN109196691B (zh) 2022-01-04

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