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WO2008126968A1 - Matériau d'anode pour batterie secondaire, procédé de préparation correspondant et batterie secondaire le contenant pour une anode - Google Patents

Matériau d'anode pour batterie secondaire, procédé de préparation correspondant et batterie secondaire le contenant pour une anode Download PDF

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Publication number
WO2008126968A1
WO2008126968A1 PCT/KR2007/005436 KR2007005436W WO2008126968A1 WO 2008126968 A1 WO2008126968 A1 WO 2008126968A1 KR 2007005436 W KR2007005436 W KR 2007005436W WO 2008126968 A1 WO2008126968 A1 WO 2008126968A1
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WO
WIPO (PCT)
Prior art keywords
secondary battery
anode
fluorine
active material
based compound
Prior art date
Application number
PCT/KR2007/005436
Other languages
English (en)
Inventor
Jeong-Min Han
Jeong-Hun Oh
Jong-Sung Kim
Chul Youm
Kyung-Hee Han
Original Assignee
Ls Mtron, 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 Ls Mtron, Ltd. filed Critical Ls Mtron, Ltd.
Publication of WO2008126968A1 publication Critical patent/WO2008126968A1/fr

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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
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H01M4/131—Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
    • H01M4/1315—Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx containing halogen atoms, e.g. LiCoOxFy
    • 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
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • 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
    • H01M4/04—Processes of manufacture in general
    • H01M4/0402—Methods of deposition of the material
    • H01M4/0404—Methods of deposition of the material by coating on electrode collectors
    • 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
    • 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
    • H01M4/139—Processes of manufacture
    • H01M4/1391—Processes of manufacture of electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
    • H01M4/13915—Processes of manufacture of electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx containing halogen atoms, e.g. LiCoOxFy
    • 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
    • H01M4/139—Processes of manufacture
    • H01M4/1393—Processes of manufacture of 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
    • H01M4/36—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
    • H01M4/582—Halogenides
    • 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
    • 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 present invention relates to an anode material for a secondary battery, a method for preparing the same and a secondary battery containing the same for an anode, and in particular, to an anode material for a secondary battery, in which a fluorine-based compound is added to an anode active material when preparing a slurry for manufacturing an electrode plate to stabilize the surface of the anode active material, thereby reducing the influence caused by a decomposition reaction of an organic electrolyte liquid that results in an irreversible capacity and reducing the influence on an acid generated by oxidation of an electrolyte during charging/discharging, consequently improving efficiency and cycleability of the battery, and to a method for preparing the same and a secondary battery comprising an anode made of the same.
  • a lithium secondary battery As various portable electronic equipments such as video cameras, wireless phones, mobile phones or notebook computers spread into daily life rapidly, the demand for a secondary battery as a power source increased considerably.
  • a lithium secondary battery has excellent battery characteristics such as large capacity and high energy density, and thus research and development of the lithium secondary battery has been made lively at the inside and outside of the country, and currently the lithium secondary battery is used more widely than other secondary batteries.
  • the lithium secondary battery comprises basically a cathode, an anode and an electrolyte, and accordingly research and development of the lithium secondary battery includes largely studies about a cathode material, an anode material and an electrolyte.
  • a natural graphite used as an anode material of the lithium secondary battery has an excellent initial capacity, but low efficiency and cycleability. It is known that this drawback results from a decomposition reaction of an electrolyte liquid occurring at an edge portion of the natural graphite of high crystallinity.
  • the drawback may be overcome by surface-treating (coating) the natural graphite with a low crystallinity carbon and thermally treating them at 1,000 0 C or more, so that the surface of the natural graphite is coated with a low crystallinity carbide.
  • an anode active material can be obtained, in which an initial capacity is reduced a little, but efficiency and cycleability are improved.
  • the low crystallinity carbon used as a coating material is thermally treated at a high temperature, and thus it makes the natural graphite an artificial graphite, so that the reduction of an initial capacity can be minimized and the decomposition reaction of an electrolyte liquid can be prevented.
  • the carbon material used as the anode material of the lithium secondary battery during reduction (charge), lithium (Li) atoms go between carbon layers or nano-scale clusters are formed on the surface and micropore of carbon, and thus dendrite occurring in lithium-metal is not formed.
  • the carbon material used as the anode material of the lithium secondary battery has relatively excellent rechargeability, safety and high energy density, and thus can be prepared at a general air atmosphere.
  • the carbon material has a relatively low energy density (3.9 Ah/g) per weight of a lithium metal, and thus has limitations in capacity.
  • a material for a carbon electrode has various kinds of crystal structures depending on a raw material, an organic precursor or a thermodecomposition process, and lithium- intercalation may vary depending on the kind of crystal structure, thereby leading to various capacities and reversible characteristics.
  • one kind of carbon material has excellent characteristics as an anode material, but has relatively poor characteristics in other fields.
  • lithium ions are inserted into an interlayer of a graphite layer or a battery comprising the anode has a larger capacity 2.5 times than a battery using an intercalated graphite (LiC ),
  • An object of the present invention is to provide an anode material for a secondary battery, which stabilizes the surface of an anode active material to reduce the influence of a decomposition reaction of an organic electrolyte liquid that results in an irreversible capacity, and reduces the influence on an acid generated by oxidation of an electrolyte during charging/discharging, thereby improving efficiency and cycleability of the battery, and to a method for preparing the same and a secondary battery comprising an anode made of the same.
  • an anode material for a secondary battery comprises an anode active material; and a fluorine-based compound.
  • a method for preparing an anode material for a secondary battery comprises preparing an anode active material and a fluorine-based compound; mixing the anode active material with the fluorine-based compound to prepare a slurry for manufacturing an electrode plate; coating the slurry for manufacturing an electrode plate on an electrode collector; and drying the slurry for manufacturing an electrode plate coated on the electrode collector.
  • a secondary battery comprises an anode made of the anode material prepared by the above-mentioned method.
  • the present invention coats a natural graphite with a low crystallinity carbon to prepare an anode active material and mixes the anode active material with a fluorine- based compound to prepare a slurry for manufacturing an electrode plate, thereby improving efficiency and cycleability of a battery.
  • the fluorine-based compound means all compounds containing fluorine, and may be, for example, CsF, KF, LiF, NaF, RbF, TiF, AgF, AgF , BaF , CaF , CuF , CdF , FeF ,
  • the fluorine-based compound is used with a content of at least 0.1 weight% based on the anode active material, more preferably 0.5 to 20 weight%.
  • the content of the fluorine-based compound meets the above-mentioned numerical range, it is preferable because the influence on an acid generated by a sub- reaction with an electrolyte liquid can be reduced sufficiently.
  • the anode material for a secondary battery according to the present invention in which the above-mentioned fluorine -based compound is added as an additive, may be prepared by a typical method known in the prior art. Specifically, the anode active material and the fluorine-based compound were mixed to prepare a slurry for manufacturing an electrode plate, and the slurry for manufacturing an electrode plate was coated on an electrode collector and dried to remove a solvent or dispersion medium. At this time, active materials are stuck to the electrode collector, and the active materials are stuck together. And, a conductive agent and/or a binder may be selectively added when preparing the slurry for manufacturing an electrode plate.
  • the anode active material may be prepared by coating a core carbon material with a low crystallinity carbon using a typical method.
  • the core carbon material may be a natural graphite, an artificial graphite or a mixture thereof, and in particular, it is preferable to use a natural graphite.
  • the low crystallinity carbon may be pitch, tar, a phenol resin, a furan resin or a furfuryl alcohol.
  • the fluorine-based compound is mixed with a content of at least 0.1 weight%, preferably 0.5 to 20 weight% based on the anode active material prepared by coating the core carbon material with the low crystallinity carbon, so that the slurry for manufacturing an electrode plate is prepared.
  • the fluorine-based compound mixed with the anode active material may be pulverized to a desired size before mixing, and thus the particle size of the fluorine- based compound may vary depending on purpose of use.
  • the conductive agent or the binder when preparing the slurry for manufacturing an electrode plate, may be selectively added according to necessity.
  • a content of the conductive agent or binder may be adjusted properly to a typical range used in the prior art, and the range does not influence the present invention.
  • the conductive agent is not limited to a specific material if it is an electronically conductive material that does not bring about a chemical change in the battery.
  • the electronically conductive material may be carbon black such as acetylene black, Ketjen black, furnace black or thermal black; a natural graphite; an artificial graphite; or a conductive carbon fiber, and in particular, the conductive agent may be carbon black, graphite powder or a carbon fiber.
  • the binder may be a thermoplastic resin, a thermosetting resin or a mixture thereof.
  • the binder may be polyvinylidene fluoride (PVDF) or polyte- trafluoroethylene (PTFE), more preferably polyvinylidene fluoride.
  • PVDF polyvinylidene fluoride
  • PTFE polyte- trafluoroethylene
  • the slurry for manufacturing an electrode plate including the anode active material, the fluorine-based compound and selectively at least one of the conductive agent and the binder is coated on an electrode collector and dried to remove a solvent or dispersion medium, so that active materials are stuck to the electrode collector and the active materials are stuck together.
  • the electrode collector is not limited to a specific material if it is made of a conductive material, however in particular, it is preferable to use a foil made of copper, gold, nickel, a copper alloy or combination thereof.
  • the anode is made of the anode material prepared by the above-mentioned preparing method.
  • the secondary battery of the present invention may be manufactured by a typical method, i.e. interposing a porous separator between a cathode and an anode and adding an electrolyte.
  • the electrolyte is a non-aqueous electrolyte liquid including a lithium salt and an electrolyte liquid compound, and the lithium salt may be at least one compound selected from the group consisting of LiClO , LiCF SO , LiPF , LiBF , LiAsF and
  • the electrolyte liquid compound may be at least one compound selected from the group consisting of ethylene carbonate (EC), propylene carbonate (PC), ⁇ -butyrolactone (CBL), diethyl carbonate (DEC), dimethyl carbonate (DMC), ethyl methyl carbonate (EMC) and methyl propyl carbonate (MPC).
  • EC ethylene carbonate
  • PC propylene carbonate
  • CBL ⁇ -butyrolactone
  • DEC diethyl carbonate
  • DMC dimethyl carbonate
  • EMC ethyl methyl carbonate
  • MPC methyl propyl carbonate
  • the separator used to manufacture the secondary battery of the present invention is a porous separator, for an unlimited example a polypropylene-based, polyethylene-based or polyolefin-based porous separator.
  • the secondary battery of the present invention is not limited to a specifical shape, however it may be cylindrical, angular, pouch-shaped or coin-shaped using a can.
  • a pitch dissolved in tetrahydrofuran was added to a spherical natural graphite with a weight ratio of 100:10, and wet-mixed at an atmospheric pressure for 2 hours or more and dried to produce a mixture.
  • the mixture was sintered at 1,100 0 C and 1,500 0 C for 1 hour, respectively, and classified to remove fine powder, thereby preparing an anode active material.
  • NMP methylpyrrolidone
  • PVDF polyvinylidene fluoride
  • This example 2 was carried out by the same method as the example 1 except that a silicon fluorine compound (SiF ) was used with a content of 1 weight%.
  • SiF silicon fluorine compound
  • Example 3 was carried out by the same method as the example 1 except that a silicon fluorine compound (SiF ) was used with a content of 2 weight%.
  • SiF silicon fluorine compound
  • This example 4 was carried out by the same method as the example 1 except that a silicon fluorine compound (SiF ) was used with a content of 3 weight%.
  • SiF silicon fluorine compound
  • This example 5 was carried out by the same method as the example 1 except that a silicon fluorine compound (SiF ) was used with a content of 4 weight%.
  • SiF silicon fluorine compound
  • This example 6 was carried out by the same method as the example 1 except that a tin fluorine compound (SnF ) was used instead of the silicon fluorine compound (SiF ).
  • a pitch dissolved in tetrahydrofuran was added to a spherical natural graphite with a weight ratio of 100:10, and wet-mixed at an atmospheric pressure for 2 hours or more and dried to produce a mixture.
  • the mixture was sintered at 1,100 0 C and 1,500 0 C for 1 hour, respectively, and classified to remove fine powder, thereby preparing an anode active material.
  • NMP N- methylpyrrolidone
  • PVDF polyvinylidene fluoride
  • the charge/discharge test was performed such that the coin cell was charged with a charge current of 0.5 mA/cnf until a voltage is 0.01 V while an electrical potential was limited to the range of 0 to 1.5 V, and was continuously charged until the charge current is 0.02 mA/cnf while maintaining the voltage at 0.01 V. And, the coin cell was discharged with a discharge current of 0.5 mA/cnf until the voltage is 1.5 V.
  • the charge/discharge efficiency is a ratio of a discharged electrical capacity to a charged electrical capacity.
  • the present invention adds a fluorine-based compound to an anode active material when preparing a slurry for manufacturing an electrode plate, so that the surface of the anode active material is stabilized to reduce the influence caused by a decomposition reaction of an organic electrolyte liquid that results in an irreversible capacity. And, the present invention can reduce the influence on an acid generated by oxidation of an electrolyte during charging/discharging, thereby improving efficiency and cycleability of a battery.

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

Abstract

La présente invention concerne un matériau d'anode de batterie secondaire, un procédé de préparation correspondant et une batterie secondaire le contenant pour une anode. Le matériau d'anode d'une batterie secondaire selon la présente invention se compose d'un matériau d'anode actif et d'un composé basé sur de la fluorine. La présente invention stabilise la surface du matériau d'anode actif pour réduire l'influence causée par une réaction de décomposition d'un liquide électrolyte organique qui entraîne une capacité irréversible et réduit l'influence sur un acide généré par oxydation d'un électrolyte durant la charge/décharge, améliorant ainsi l'efficacité et l'aptitude à la cyclisation de la batterie.
PCT/KR2007/005436 2007-04-16 2007-10-31 Matériau d'anode pour batterie secondaire, procédé de préparation correspondant et batterie secondaire le contenant pour une anode WO2008126968A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2007-0036910 2007-04-16
KR1020070036910A KR20080093242A (ko) 2007-04-16 2007-04-16 2차 전지용 음극재와 그 제조방법 및 이를 음극으로포함하는 2차 전지

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WO2008126968A1 true WO2008126968A1 (fr) 2008-10-23

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Cited By (6)

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US20120276450A1 (en) * 2008-05-16 2012-11-01 Uchicago Argonne, Llc Surface modification agents for lithium batteries
CN108172828A (zh) * 2016-12-07 2018-06-15 丰田自动车株式会社 氟化物离子全固体电池
JP2018190544A (ja) * 2017-04-28 2018-11-29 トヨタ自動車株式会社 負極活物質粒子、負極、リチウムイオン二次電池、および負極活物質粒子の製造方法
CN109286014A (zh) * 2018-11-23 2019-01-29 浙江众泰汽车制造有限公司 一种表面改性的硅碳复合材料及其制备方法和应用
US10403886B2 (en) * 2016-07-26 2019-09-03 Korea Institute Of Science And Technology Anode material for secondary battery,secondary battery including the anode material and method for preparing the anode material
CN114613974A (zh) * 2022-04-17 2022-06-10 晖阳(贵州)新能源材料有限公司 一种长寿命快充型锂离子电池负极材料及其制备方法

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US9580322B2 (en) 2012-08-28 2017-02-28 Knu-Industry Cooperation Foundation Method of preparing negative active material for rechargeable lithium battery, and negative active material and rechargeable lithium battery prepared from the same
US9368792B2 (en) 2012-08-28 2016-06-14 Kangwon National University University-Industry Cooperation Foundation Negative active material for rechargeable lithium battery, method of preparing the same, and rechargeable lithium battery including the same
KR101446698B1 (ko) * 2012-08-28 2014-10-06 강원대학교산학협력단 리튬 이차 전지용 음극 활물질의 제조 방법, 및 이로부터 제조된 음극 활물질 및 리튬 이차 전지
KR102379564B1 (ko) * 2014-12-31 2022-03-29 삼성전자주식회사 복합 음극 활물질, 상기 복합 음극 활물질을 포함하는 음극 및 상기 음극을 포함하는 리튬 이차전지
JP7054445B2 (ja) * 2018-03-26 2022-04-14 トヨタ自動車株式会社 負極材料とこれを用いた電解液系電池
CN114497469B (zh) * 2020-11-11 2023-12-22 成都爱敏特新能源技术有限公司 一氧化硅-氟化钴-石墨烯复合负极材料及其制备方法
CN114050263B (zh) * 2021-11-09 2024-02-20 远景动力技术(江苏)有限公司 负极材料及其制备方法和应用
CN114349055B (zh) * 2022-03-18 2022-06-24 浙江帕瓦新能源股份有限公司 镍钴锰三元正极材料的前驱体材料及其制备方法
KR20250009233A (ko) * 2023-07-10 2025-01-17 삼성에스디아이 주식회사 전고체 전지용 음극 및 이를 포함하는 전고체 전지

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120276450A1 (en) * 2008-05-16 2012-11-01 Uchicago Argonne, Llc Surface modification agents for lithium batteries
US9065115B2 (en) * 2008-05-16 2015-06-23 Uchicago Argonne, Llc Surface modification agents for lithium batteries
US9825287B2 (en) 2008-05-16 2017-11-21 Uchicago Argonne, Llc Surface modification agents for lithium batteries
US10403886B2 (en) * 2016-07-26 2019-09-03 Korea Institute Of Science And Technology Anode material for secondary battery,secondary battery including the anode material and method for preparing the anode material
CN108172828A (zh) * 2016-12-07 2018-06-15 丰田自动车株式会社 氟化物离子全固体电池
CN108172828B (zh) * 2016-12-07 2021-07-27 丰田自动车株式会社 氟化物离子全固体电池
JP2018190544A (ja) * 2017-04-28 2018-11-29 トヨタ自動車株式会社 負極活物質粒子、負極、リチウムイオン二次電池、および負極活物質粒子の製造方法
CN109286014A (zh) * 2018-11-23 2019-01-29 浙江众泰汽车制造有限公司 一种表面改性的硅碳复合材料及其制备方法和应用
CN114613974A (zh) * 2022-04-17 2022-06-10 晖阳(贵州)新能源材料有限公司 一种长寿命快充型锂离子电池负极材料及其制备方法

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