JP2018525790A - 安全性の向上した電極及びこれを含む二次電池 - Google Patents
安全性の向上した電極及びこれを含む二次電池 Download PDFInfo
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- JP2018525790A JP2018525790A JP2018508672A JP2018508672A JP2018525790A JP 2018525790 A JP2018525790 A JP 2018525790A JP 2018508672 A JP2018508672 A JP 2018508672A JP 2018508672 A JP2018508672 A JP 2018508672A JP 2018525790 A JP2018525790 A JP 2018525790A
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- Prior art keywords
- positive electrode
- active material
- current collector
- secondary battery
- negative electrode
- Prior art date
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- Granted
Links
- 239000007774 positive electrode material Substances 0.000 claims description 26
- 239000002245 particle Substances 0.000 claims description 17
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- 238000005096 rolling process Methods 0.000 claims description 11
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- 230000035515 penetration Effects 0.000 abstract description 11
- 239000007773 negative electrode material Substances 0.000 abstract description 10
- -1 sheets Substances 0.000 description 19
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 17
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 13
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- VZSRBBMJRBPUNF-UHFFFAOYSA-N 2-(2,3-dihydro-1H-inden-2-ylamino)-N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]pyrimidine-5-carboxamide Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C(=O)NCCC(N1CC2=C(CC1)NN=N2)=O VZSRBBMJRBPUNF-UHFFFAOYSA-N 0.000 description 7
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- 150000002739 metals Chemical class 0.000 description 1
- 229940017219 methyl propionate Drugs 0.000 description 1
- 238000009782 nail-penetration test Methods 0.000 description 1
- 150000005181 nitrobenzenes Chemical class 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- LYGJENNIWJXYER-UHFFFAOYSA-N nitromethane Chemical compound C[N+]([O-])=O LYGJENNIWJXYER-UHFFFAOYSA-N 0.000 description 1
- 229910021470 non-graphitizable carbon Inorganic materials 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920001451 polypropylene glycol Polymers 0.000 description 1
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 1
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 1
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- 239000001008 quinone-imine dye Substances 0.000 description 1
- 239000004627 regenerated cellulose Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- HXJUTPCZVOIRIF-UHFFFAOYSA-N sulfolane Chemical compound O=S1(=O)CCCC1 HXJUTPCZVOIRIF-UHFFFAOYSA-N 0.000 description 1
- 229920005608 sulfonated EPDM Polymers 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- TXEYQDLBPFQVAA-UHFFFAOYSA-N tetrafluoromethane Chemical compound FC(F)(F)F TXEYQDLBPFQVAA-UHFFFAOYSA-N 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 150000003624 transition metals Chemical class 0.000 description 1
- BDZBKCUKTQZUTL-UHFFFAOYSA-N triethyl phosphite Chemical compound CCOP(OCC)OCC BDZBKCUKTQZUTL-UHFFFAOYSA-N 0.000 description 1
- 229910001935 vanadium oxide Inorganic materials 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
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- H01M4/00—Electrodes
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- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
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Abstract
Description
本発明の他面によれば、前記正極とともに、負極、及び前記正極と負極との間に介されたセパレータを含む二次電池が提供される。
厚さ12μmであり、延伸率が2.4%であるアルミニウムホイルを正極集電体として準備した。
負極集電体として厚さが10μmである銅ホイルを準備した。
空隙度が31%であることを除いては、実施例1−1と同様の方法で正極を製作した。最終製作された正極は、1.35%の延伸率を有した。
実施例2−1の正極を用いることを除いては、実施例1−2と同様の方法で二次電池を製作した。
活物質の平均粒径が10μmであることを除いては、実施例1−1と同様の方法で正極を製作した。最終製作された正極の延伸率は、1.48%であった。
実施例3−1の正極を用いることを除いては、実施例1−2と同様の方法で二次電池を製作した。
厚さ15μmであり、延伸率が2.9%であるアルミニウムホイルを用いることを除いては、実施例1−1と同様の方法で正極を製作した。最終製作された正極は、1.73%の延伸率を有した。
比較例1−1の正極を用いることを除いては、実施例1−2と同一の方法で二次電池を製作した。
活物質の平均粒径が14μmであることを除いては、実施例1−1と同様の方法で正極を製作した。製作された正極は、1.95%の延伸率を有した。
比較例2−1の正極を用いることを除いては、実施例1−2と同様の方法で二次電池を製作した。
前記製作された実施例1−2から3−2と、比較例1−2及び2−2の二次電池を、25℃で4.15V電圧で満充電し、直径3mmの釘を用いて電池の中央を刺した後、発火有無を観察した。この際、釘の刺し速度は80mm/secにした。
その結果は、下記表1のようである。
Claims (6)
- 正極集電体及び前記正極集電体の少なくとも一面に備えられた正極活物質層を含む正極であって、前記正極が0.6〜1.5%の延伸率を有する、二次電池用正極。
- 前記正極集電体が、6μm〜20μmの厚さを有することを特徴とする請求項1に記載の二次電池用正極。
- 前記正極集電体が、アルミニウムホイルであることを特徴とする請求項1に記載の二次電池用正極。
- 正極活物質が、4μm〜12μmの平均粒径を有することを特徴とする請求項1に記載の二次電池用正極。
- 前記正極活物質層が、圧延後23%〜35%の空隙度を有することを特徴とする請求項1に記載の二次電池用正極。
- 請求項1から請求項5のうちいずれか一項に記載の正極と、負極と、前記正極と負極との間に介されるセパレータと、を含む二次電池。
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KR10-2015-0133020 | 2015-09-21 | ||
KR1020150133020A KR102022582B1 (ko) | 2015-09-21 | 2015-09-21 | 안전성이 향상된 전극 및 이를 포함하는 이차전지 |
PCT/KR2016/010543 WO2017052200A1 (ko) | 2015-09-21 | 2016-09-21 | 안전성이 향상된 전극 및 이를 포함하는 이차전지 |
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EP (1) | EP3355383B1 (ja) |
JP (1) | JP6816112B2 (ja) |
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CN (1) | CN107925048B (ja) |
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JP2019501492A (ja) * | 2016-06-14 | 2019-01-17 | エルジー・ケム・リミテッド | 二次電池用電極及びこれを含むリチウム二次電池 |
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KR102158680B1 (ko) * | 2017-05-02 | 2020-09-22 | 주식회사 엘지화학 | 이차전지용 양극의 제조방법 |
WO2019088795A2 (ko) | 2017-11-06 | 2019-05-09 | 주식회사 엘지화학 | 안전성이 향상된 이차전지용 전극과 이의 제조방법, 및 이 전극을 포함하는 이차전지 |
KR102203691B1 (ko) * | 2017-11-06 | 2021-01-15 | 주식회사 엘지화학 | 안전성이 향상된 이차전지용 전극과 이의 제조방법, 및 이 전극을 포함하는 이차전지 |
CN113937415A (zh) * | 2020-06-28 | 2022-01-14 | 华为技术有限公司 | 二次电池和终端 |
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JP2019501492A (ja) * | 2016-06-14 | 2019-01-17 | エルジー・ケム・リミテッド | 二次電池用電極及びこれを含むリチウム二次電池 |
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EP3355383A4 (en) | 2018-08-01 |
KR20170034570A (ko) | 2017-03-29 |
US10593954B2 (en) | 2020-03-17 |
WO2017052200A1 (ko) | 2017-03-30 |
EP3355383B1 (en) | 2021-09-08 |
CN107925048B (zh) | 2021-07-23 |
KR102022582B1 (ko) | 2019-09-18 |
CN107925048A (zh) | 2018-04-17 |
EP3355383A1 (en) | 2018-08-01 |
PL3355383T3 (pl) | 2022-01-10 |
JP6816112B2 (ja) | 2021-01-20 |
US20180212249A1 (en) | 2018-07-26 |
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