JP6806796B2 - 二次電池 - Google Patents
二次電池 Download PDFInfo
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- JP6806796B2 JP6806796B2 JP2018559111A JP2018559111A JP6806796B2 JP 6806796 B2 JP6806796 B2 JP 6806796B2 JP 2018559111 A JP2018559111 A JP 2018559111A JP 2018559111 A JP2018559111 A JP 2018559111A JP 6806796 B2 JP6806796 B2 JP 6806796B2
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- secondary battery
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 26
- 239000000203 mixture Substances 0.000 claims description 21
- 229910002804 graphite Inorganic materials 0.000 claims description 13
- 239000010439 graphite Substances 0.000 claims description 13
- 239000012752 auxiliary agent Substances 0.000 claims description 10
- 229910003481 amorphous carbon Inorganic materials 0.000 claims description 7
- 239000006230 acetylene black Substances 0.000 claims description 5
- 239000011149 active material Substances 0.000 claims description 4
- 239000003273 ketjen black Substances 0.000 claims description 4
- 238000004804 winding Methods 0.000 description 28
- 239000011888 foil Substances 0.000 description 25
- 239000010410 layer Substances 0.000 description 15
- 239000007773 negative electrode material Substances 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 11
- 238000002347 injection Methods 0.000 description 10
- 239000007924 injection Substances 0.000 description 10
- 229910052744 lithium Inorganic materials 0.000 description 10
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 9
- 239000008151 electrolyte solution Substances 0.000 description 9
- 230000002427 irreversible effect Effects 0.000 description 9
- 239000007788 liquid Substances 0.000 description 8
- 239000007774 positive electrode material Substances 0.000 description 7
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 6
- 239000004743 Polypropylene Substances 0.000 description 6
- 238000007600 charging Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 229920001155 polypropylene Polymers 0.000 description 6
- 239000011230 binding agent Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- -1 polybutylene terephthalate Polymers 0.000 description 5
- 230000001681 protective effect Effects 0.000 description 5
- 239000002002 slurry Substances 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 4
- 238000007599 discharging Methods 0.000 description 4
- 229910021382 natural graphite Inorganic materials 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 239000004698 Polyethylene Substances 0.000 description 3
- 239000006229 carbon black Substances 0.000 description 3
- 235000019241 carbon black Nutrition 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000011267 electrode slurry Substances 0.000 description 3
- 239000011255 nonaqueous electrolyte Substances 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 239000002033 PVDF binder Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000011889 copper foil Substances 0.000 description 2
- JBTWLSYIZRCDFO-UHFFFAOYSA-N ethyl methyl carbonate Chemical compound CCOC(=O)OC JBTWLSYIZRCDFO-UHFFFAOYSA-N 0.000 description 2
- 239000007770 graphite material Substances 0.000 description 2
- 229910021385 hard carbon Inorganic materials 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000011572 manganese Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 2
- 230000000284 resting effect Effects 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 229910021384 soft carbon Inorganic materials 0.000 description 2
- 229920003048 styrene butadiene rubber Polymers 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 1
- 239000005751 Copper oxide Substances 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 description 1
- 229910012851 LiCoO 2 Inorganic materials 0.000 description 1
- 229910010707 LiFePO 4 Inorganic materials 0.000 description 1
- 229910015643 LiMn 2 O 4 Inorganic materials 0.000 description 1
- 229910013716 LiNi Inorganic materials 0.000 description 1
- 229910013825 LiNi0.33Co0.33Mn0.33O2 Inorganic materials 0.000 description 1
- 229910013290 LiNiO 2 Inorganic materials 0.000 description 1
- 229910013870 LiPF 6 Inorganic materials 0.000 description 1
- 229910001290 LiPF6 Inorganic materials 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 239000004813 Perfluoroalkoxy alkane Substances 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004734 Polyphenylene sulfide Substances 0.000 description 1
- 239000002174 Styrene-butadiene Substances 0.000 description 1
- SOXUFMZTHZXOGC-UHFFFAOYSA-N [Li].[Mn].[Co].[Ni] Chemical compound [Li].[Mn].[Co].[Ni] SOXUFMZTHZXOGC-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910021383 artificial graphite Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 150000004651 carbonic acid esters Chemical class 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 239000006231 channel black Substances 0.000 description 1
- 238000010277 constant-current charging Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910000431 copper oxide Inorganic materials 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000006232 furnace black Substances 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000006233 lamp black Substances 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 229910003002 lithium salt Inorganic materials 0.000 description 1
- 159000000002 lithium salts Chemical class 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 1
- 239000010450 olivine Substances 0.000 description 1
- 229910052609 olivine Inorganic materials 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920011301 perfluoro alkoxyl alkane Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920001707 polybutylene terephthalate Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000069 polyphenylene sulfide Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000009751 slip forming Methods 0.000 description 1
- 229910052596 spinel Inorganic materials 0.000 description 1
- 239000011029 spinel Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 239000006234 thermal black Substances 0.000 description 1
Images
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
- H01M4/58—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
- 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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
- H01M10/0583—Construction or manufacture of accumulators with folded construction elements except wound ones, i.e. folded positive or negative electrodes or separators, e.g. with "Z"-shaped electrodes or separators
-
- 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
- H01M10/058—Construction or manufacture
- H01M10/0587—Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
-
- 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
- H01M4/36—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
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
-
- 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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M2010/4292—Aspects relating to capacity ratio of electrodes/electrolyte or anode/cathode
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Secondary Cells (AREA)
- Battery Electrode And Active Subsutance (AREA)
Description
扁平捲回形二次電池100は、電池缶1および蓋(電池蓋)6を備える。電池缶1は、相対的に面積の大きい一対の対向する幅広側面1bと相対的に面積の小さい一対の対向する幅狭側面1cとを有する側面と底面1dを有し、その上方に開口部1aを有する。
電池缶1内には、捲回群3が収納され、電池缶1の開口部1aが電池蓋6によって封止されている。電池蓋6は略矩形平板状であって、電池缶1の上方開口部1aを塞ぐように溶接されて電池缶1が封止されている。電池蓋6には、正極外部端子14と、負極外部端子12が設けられている。正極外部端子14と負極外部端子12を介して捲回群3に充電され、また外部負荷に電力が供給される。電池蓋6には、ガス排出弁10が一体的に設けられ、電池容器内の圧力が上昇すると、ガス排出弁10が開いて内部からガスが排出され、電池容器内の圧力が低減される。これによって、扁平捲回形二次電池100の安全性が確保される。
扁平捲回形二次電池100の電池缶1は、矩形の底面1dと、底面1dから立ち上がる角筒状の側面1b、1cと、側面1b、1cの上端で上方に向かって開放された開口部1aとを有している。電池缶1内には、絶縁保護フィルム2を介して捲回群3が収容されている。
捲回群3は、負極電極32と正極電極34を間にセパレータ33、35を介して扁平状に捲回することによって構成されている。捲回群3は、最外周の電極が負極電極32であり、さらにその外側にセパレータ33、35が捲回される。
また、軸芯としては例えば、正極箔31a、負極箔32a、セパレータ33のいずれよりも曲げ剛性の高い樹脂シートを捲回して構成したものを用いることができる。
(リチウム二次電池の構成)
まず、正極活物質として、LiNi0.33Co0.33Mn0.33粉末と、導電助剤としてアセチレンブラック、及びグラファイト、バインダとして、ポリフッ化ビニリデン(PVdF)とを90:4:3:3となる重量比率で混合し、N−メチル−2−ピロリドン(NMP)でスラリー状となるように粘度調整した。正極スラリーを暑さ15μmのアルミニウム箔の両面に塗布して、乾燥、プレスして、正極電極を作製した。
1a…開口部
1b…幅広側面
1c…幅狭側面
1d…底面
2…絶縁保護フィルム
3…捲回群
6…電池蓋
7…絶縁板
9…注液口
10…ガス排出弁
11…注液栓
12…負極外部端子
12a…負極接続部
14…正極外部端子
14a…正極接続部
21…負極集電板基部
22…負極側接続端部
23…負極側開口穴
24…負極集電板
26…負極側貫通孔
32…負極電極
32a…負極箔
32b…負極合剤層
32c…負極箔露出部
32d…正極合剤層と対向している負極合剤層
32e…正極合剤層と対向していない負極合剤層
33…セパレータ
34…正極電極
34a…正極箔
34b…正極合剤層
34c…正極箔露出部
35…セパレータ
41…正極集電板基部
42…正極側接続端部
43…正極側開口穴
44…正極集電板
46…正極側貫通孔
100…二次電池
Claims (4)
- 正極と負極とを有する二次電池において、
前記負極は、黒鉛と非晶質炭素との混合物であり、
前記負極は、活物質として導電助剤が担持された黒鉛が用いられ、前記導電助剤は、カーボンブラック、アセチレンブラック、ケッチェンブラックの少なくともいずれか1種類を含み、前記導電助剤の担持量は、前記黒鉛に対して2重量%以下であり、
前記二次電池の放電容量に対する正極放電曲線の正極電位3.0V(vs. Li/Li+)から前記二次電池の電池放電曲線の電池電圧3.0Vまでの容量差(放電電流は電池容量基準で0.02CA)が14%〜26%であることを特徴とする二次電池。 - 請求項1に記載の二次電池において、
前記容量差が14%〜17%であることを特徴とする二次電池。 - 請求項1に記載の二次電池において、
前記容量差が17%〜26%であることを特徴とする二次電池。 - 請求項1に記載の二次電池において、
前記容量差が0.82〜1.28Ahであることを特徴とする二次電池。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2016254649 | 2016-12-28 | ||
JP2016254649 | 2016-12-28 | ||
PCT/JP2017/045870 WO2018123792A1 (ja) | 2016-12-28 | 2017-12-21 | 二次電池 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPWO2018123792A1 JPWO2018123792A1 (ja) | 2019-06-27 |
JP6806796B2 true JP6806796B2 (ja) | 2021-01-06 |
Family
ID=62710601
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2018559111A Active JP6806796B2 (ja) | 2016-12-28 | 2017-12-21 | 二次電池 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20190267624A1 (ja) |
EP (1) | EP3565051A4 (ja) |
JP (1) | JP6806796B2 (ja) |
CN (1) | CN110100345B (ja) |
WO (1) | WO2018123792A1 (ja) |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013146207A1 (ja) * | 2012-03-30 | 2013-10-03 | 住友大阪セメント株式会社 | 電極活物質、リチウムイオン電池、電極活物質の放電状態の検出方法及び電極活物質の製造方法 |
KR101551523B1 (ko) * | 2012-08-02 | 2015-09-08 | 주식회사 엘지화학 | 출력 특성과 안전성이 향상된 혼합 양극활물질 및 이를 포함하는 리튬이차전지 |
JP2014035922A (ja) * | 2012-08-09 | 2014-02-24 | Sanyo Electric Co Ltd | 非水電解質二次電池 |
JP2015011930A (ja) * | 2013-07-01 | 2015-01-19 | トヨタ自動車株式会社 | 非水電解質二次電池 |
CN104377328B (zh) * | 2013-08-14 | 2019-09-13 | 三星Sdi株式会社 | 可再充电锂电池 |
US10263248B2 (en) * | 2014-06-26 | 2019-04-16 | Lg Chem, Ltd. | Lithium secondary battery |
JP6164503B2 (ja) * | 2015-06-25 | 2017-07-19 | トヨタ自動車株式会社 | 二次電池の内部抵抗推定方法および出力制御方法 |
-
2017
- 2017-12-21 WO PCT/JP2017/045870 patent/WO2018123792A1/ja unknown
- 2017-12-21 CN CN201780057286.9A patent/CN110100345B/zh active Active
- 2017-12-21 JP JP2018559111A patent/JP6806796B2/ja active Active
- 2017-12-21 US US16/333,851 patent/US20190267624A1/en active Pending
- 2017-12-21 EP EP17885784.3A patent/EP3565051A4/en active Pending
Also Published As
Publication number | Publication date |
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CN110100345A (zh) | 2019-08-06 |
WO2018123792A1 (ja) | 2018-07-05 |
EP3565051A4 (en) | 2020-09-30 |
US20190267624A1 (en) | 2019-08-29 |
CN110100345B (zh) | 2022-07-19 |
JPWO2018123792A1 (ja) | 2019-06-27 |
EP3565051A1 (en) | 2019-11-06 |
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