JP2019149368A - リチウムイオン電池用正極 - Google Patents
リチウムイオン電池用正極 Download PDFInfo
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- JP2019149368A JP2019149368A JP2018242181A JP2018242181A JP2019149368A JP 2019149368 A JP2019149368 A JP 2019149368A JP 2018242181 A JP2018242181 A JP 2018242181A JP 2018242181 A JP2018242181 A JP 2018242181A JP 2019149368 A JP2019149368 A JP 2019149368A
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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 49
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 49
- 239000000463 material Substances 0.000 claims abstract description 51
- 229910001317 nickel manganese cobalt oxide (NMC) Inorganic materials 0.000 claims abstract description 44
- DVATZODUVBMYHN-UHFFFAOYSA-K lithium;iron(2+);manganese(2+);phosphate Chemical compound [Li+].[Mn+2].[Fe+2].[O-]P([O-])([O-])=O DVATZODUVBMYHN-UHFFFAOYSA-K 0.000 claims abstract description 33
- 239000011149 active material Substances 0.000 claims abstract description 22
- 229910000625 lithium cobalt oxide Inorganic materials 0.000 claims abstract description 18
- BFZPBUKRYWOWDV-UHFFFAOYSA-N lithium;oxido(oxo)cobalt Chemical compound [Li+].[O-][Co]=O BFZPBUKRYWOWDV-UHFFFAOYSA-N 0.000 claims abstract description 18
- VGYDTVNNDKLMHX-UHFFFAOYSA-N lithium;manganese;nickel;oxocobalt Chemical compound [Li].[Mn].[Ni].[Co]=O VGYDTVNNDKLMHX-UHFFFAOYSA-N 0.000 claims abstract description 16
- NDPGDHBNXZOBJS-UHFFFAOYSA-N aluminum lithium cobalt(2+) nickel(2+) oxygen(2-) Chemical compound [Li+].[O--].[O--].[O--].[O--].[Al+3].[Co++].[Ni++] NDPGDHBNXZOBJS-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000010406 cathode material Substances 0.000 claims abstract description 7
- 239000004020 conductor Substances 0.000 claims description 54
- 239000011230 binding agent Substances 0.000 claims description 32
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 19
- 239000000126 substance Substances 0.000 claims description 15
- 239000002033 PVDF binder Substances 0.000 claims description 14
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 14
- 230000006835 compression Effects 0.000 claims description 10
- 238000007906 compression Methods 0.000 claims description 10
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 10
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 10
- 229910052723 transition metal Inorganic materials 0.000 claims description 10
- 150000003624 transition metals Chemical class 0.000 claims description 10
- 229910002804 graphite Inorganic materials 0.000 claims description 9
- 239000010439 graphite Substances 0.000 claims description 9
- 239000006229 carbon black Substances 0.000 claims description 7
- 239000002041 carbon nanotube Substances 0.000 claims description 5
- 229910021393 carbon nanotube Inorganic materials 0.000 claims description 5
- 229910021389 graphene Inorganic materials 0.000 claims description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 5
- 239000011572 manganese Substances 0.000 claims description 5
- -1 polytetrafluoroethylene Polymers 0.000 claims description 5
- 229910012851 LiCoO 2 Inorganic materials 0.000 claims description 3
- 229910015118 LiMO Inorganic materials 0.000 claims description 3
- 229910015645 LiMn Inorganic materials 0.000 claims description 3
- 229910013716 LiNi Inorganic materials 0.000 claims description 3
- 229910011456 LiNi0.80Co0.15Al0.05O2 Inorganic materials 0.000 claims description 3
- 239000007774 positive electrode material Substances 0.000 claims 2
- 239000002002 slurry Substances 0.000 description 22
- 230000000052 comparative effect Effects 0.000 description 21
- 230000035515 penetration Effects 0.000 description 14
- 238000002474 experimental method Methods 0.000 description 11
- 239000000203 mixture Substances 0.000 description 8
- 230000007423 decrease Effects 0.000 description 7
- 229910052782 aluminium Inorganic materials 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 239000011888 foil Substances 0.000 description 5
- 230000014759 maintenance of location Effects 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 4
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 229910052744 lithium Inorganic materials 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 239000013543 active substance Substances 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 238000007764 slot die coating Methods 0.000 description 3
- 239000000779 smoke Substances 0.000 description 3
- 229910052804 chromium Inorganic materials 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
- 229910052750 molybdenum Inorganic materials 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 229910052758 niobium Inorganic materials 0.000 description 2
- 229910052763 palladium Inorganic materials 0.000 description 2
- 229910052703 rhodium Inorganic materials 0.000 description 2
- 229910052707 ruthenium Inorganic materials 0.000 description 2
- 229910052706 scandium Inorganic materials 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 229910052713 technetium Inorganic materials 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 238000009461 vacuum packaging Methods 0.000 description 2
- 229910052720 vanadium Inorganic materials 0.000 description 2
- 229910052727 yttrium Inorganic materials 0.000 description 2
- 229910052726 zirconium Inorganic materials 0.000 description 2
- 238000003491 array Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000011076 safety test Methods 0.000 description 1
Classifications
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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
- 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
- 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
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4235—Safety or regulating additives or arrangements in electrodes, separators or 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
- H01M4/13—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
-
- 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
- H01M4/136—Electrodes based on inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy
-
- 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
- H01M4/48—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
-
- 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
- H01M4/48—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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- 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
- H01M4/5825—Oxygenated metallic salts or polyanionic structures, e.g. borates, phosphates, silicates, olivines
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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
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/621—Binders
- H01M4/622—Binders being polymers
- H01M4/623—Binders being polymers fluorinated polymers
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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
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/624—Electric conductive fillers
- H01M4/625—Carbon or graphite
-
- 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
- H01M2004/028—Positive electrodes
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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
- 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
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Composite Materials (AREA)
- Crystallography & Structural Chemistry (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
Description
まず、リチウムニッケルマンガンコバルト酸化物(NMC)スラリーおよびリン酸マンガン鉄リチウム(LMFP)スラリーをそれぞれ調製した。
NMCスラリーを下層にコーティングし、LMFPスラリーを上層にコーティングしたことを除いては、実施例1に述べたのと同じプロセスを繰り返して、LMFP/NMC二層正極を作製した。
NMCスラリーとLMFPスラリーを混合してアルミ箔の上にコーティングしたことを除いては、実施例1に述べたのと同じプロセスを繰り返して、LMFP+NMC混合正極を作製した。
電池の充放電レート性能I:黒鉛負極
電池の充放電レート性能II:チタン酸リチウム(LTO)負極
安全性試験
Claims (12)
- 集電体材料、
前記集電体材料の一つの表面に配置されたリン酸マンガン鉄リチウム(LMFP)材料を含む第1の電極層、および
前記第1の電極層に配置された、リチウムニッケルマンガンコバルト酸化物(NMC)、リチウムニッケルコバルトアルミニウム酸化物(NCA)、リチウムコバルト酸化物(LCO)、Liリッチ正極材料、またはそれらの組み合わせを含む活性物質を含む第2の電極層を含むリチウムイオン電池用正極。 - 前記集電体材料のもう一つの表面に配置されたリン酸マンガン鉄リチウム(LMFP)材料を含む第3の電極層、および
前記第3の電極層に配置された、リチウムニッケルマンガンコバルト酸化物(NMC)、リチウムニッケルコバルトアルミニウム酸化物(NCA)、リチウムコバルト酸化物(LCO)、Liリッチ正極材料、またはそれらの組み合わせを含む活性物質を含む第4の電極層を更に含む請求項1に記載のリチウムイオン電池用正極。 - 前記リン酸マンガン鉄リチウム(LMFP)は、LiMnx Fe1-x PO4の化学式を有し、式中、0.5≦x<1である請求項1または請求項2に記載のリチウムイオン電池用正極。
- 前記リチウムニッケルマンガンコバルト酸化物(NMC)は、LiNixCoyMnzO2の化学式を有し、式中、0<x<1、0<y<1、0<z<1、およびx+y+z=1であり、前記リチウムニッケルコバルトアルミニウム酸化物(NCA)は、LiNi0.80Co0.15Al0.05O2の化学式を有し、前記リチウムコバルト酸化物(LCO)は、LiCoO2の化学式を有し、前記Liリッチ正極材料は、xLi2MnO3・(1‐x)LiMO2の化学式を有し、式中、Mは3d遷移金属および/または4d遷移金属であり、0<x<1である請求項1または請求項2に記載のリチウムイオン電池用正極。
- 前記第2の電極層の重量比率は、前記第1の電極層と前記第2の電極層の総重量に対して、30wt%以上である請求項1〜請求項4のいずれか1項に記載のリチウムイオン電池用正極。
- 前記第4の電極層の重量比率は、前記第3の電極層と前記第4の電極層の総重量に対して、30wt%以上である請求項2〜請求項4のいずれか1項に記載のリチウムイオン電池用正極。
- 前記第1の電極層は、バインダーおよび導電材料を更に含み、前記第1の電極層の総重量に対して、前記リン酸マンガン鉄リチウム(LMFP)材料の重量比率は、80〜99wt%であり、前記バインダーの重量比率は、0.5〜20wt%であり、前記導電材料の重量比率は、0.5〜20wt%であり、前記第1の電極層の圧縮密度は、1.5〜3g/cm3である請求項1〜請求項6のいずれか1項に記載のリチウムイオン電池用正極。
- 前記第2の電極層は、バインダーおよび導電材料を更に含み、前記第2の電極層の総重量に対して、前記活性物質の重量比率は、80〜99wt%であり、前記バインダーの重量比率は、0.5〜20wt%であり、前記導電材料の重量比率は、0.5〜20wt%であり、前記第2の電極層の圧縮密度は、2.5〜4.2g/cm3である請求項1〜請求項7のいずれか1項に記載のリチウムイオン電池用正極。
- 前記第3の電極層は、バインダーおよび導電材料を更に含み、前記第3の電極層の総重量に対して、前記リン酸マンガン鉄リチウム(LMFP)材料の重量比率は、80〜99wt%であり、前記バインダーの重量比率は、0.5〜20wt%であり、前記導電材料の重量比率は、0.5〜20wt%であり、前記第3の電極層の圧縮密度は、1.5〜3g/cm3である請求項2〜請求項8のいずれか1項に記載のリチウムイオン電池用正極。
- 前記第4の電極層は、バインダーおよび導電材料を更に含み、前記第4の電極層の総重量に対して、前記活性物質の重量比率は、80〜99wt%であり、前記バインダーの重量比率は、0.5〜20wt%であり、前記導電材料の重量比率は、0.5〜20wt%であり、前記第4の電極層の圧縮密度は、2.5〜4.2g/cm3である請求項2〜請求項9のいずれか1項に記載のリチウムイオン電池用正極。
- 前記バインダーは、ポリフッ化ビニリデン(PVDF)、ポリテトラフルオロエチレン(PTFE)、またはそれらの組み合わせを含む請求項7〜請求項10のいずれか1項に記載のリチウムイオン電池用正極。
- 前記導電材料は、導電性グラファイト、カーボンブラック、カーボンナノチューブ、グラフェン、またはそれらの組み合わせを含む請求項7〜請求項10のいずれか1項に記載のリチウムイオン電池用正極。
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TW106145979 | 2017-12-27 | ||
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TW107145453A TWI679796B (zh) | 2017-12-27 | 2018-12-17 | 鋰離子電池用正極 |
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Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111864179A (zh) * | 2020-09-03 | 2020-10-30 | 东莞维科电池有限公司 | 一种正极极片及其制备方法和含有该正极极片的锂离子电池及其应用 |
CN113346047A (zh) * | 2021-06-04 | 2021-09-03 | 江西安驰新能源科技有限公司 | 一种低温锂离子电池正极极片及其制备方法,锂离子电池 |
CN113823765A (zh) * | 2021-08-10 | 2021-12-21 | 星恒电源股份有限公司 | 一种锰酸锂/磷酸锰铁锂复合正极片及锂离子电池 |
CN114094201A (zh) * | 2022-01-24 | 2022-02-25 | 深圳市睿赛新能源科技有限公司 | 一种磷酸铁锂电池 |
CN114447280A (zh) * | 2022-02-09 | 2022-05-06 | 珠海冠宇电池股份有限公司 | 一种电芯 |
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