KR101135491B1 - 리튬 이차 전지용 양극 및 이를 포함하는 리튬 이차 전지 - Google Patents
리튬 이차 전지용 양극 및 이를 포함하는 리튬 이차 전지 Download PDFInfo
- Publication number
- KR101135491B1 KR101135491B1 KR1020090011969A KR20090011969A KR101135491B1 KR 101135491 B1 KR101135491 B1 KR 101135491B1 KR 1020090011969 A KR1020090011969 A KR 1020090011969A KR 20090011969 A KR20090011969 A KR 20090011969A KR 101135491 B1 KR101135491 B1 KR 101135491B1
- Authority
- KR
- South Korea
- Prior art keywords
- positive electrode
- active material
- secondary battery
- binder
- conductive material
- 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.)
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- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 43
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 42
- 239000004020 conductor Substances 0.000 claims abstract description 43
- 239000011230 binding agent Substances 0.000 claims abstract description 37
- 239000007774 positive electrode material Substances 0.000 claims abstract description 30
- -1 polytetrafluoroethylene Polymers 0.000 claims description 20
- 239000007773 negative electrode material Substances 0.000 claims description 16
- 239000000203 mixture Substances 0.000 claims description 10
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims description 8
- 229910001416 lithium ion Inorganic materials 0.000 claims description 8
- 239000004698 Polyethylene Substances 0.000 claims description 7
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- 239000006182 cathode active material Substances 0.000 claims description 4
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- JBTWLSYIZRCDFO-UHFFFAOYSA-N ethyl methyl carbonate Chemical compound CCOC(=O)OC JBTWLSYIZRCDFO-UHFFFAOYSA-N 0.000 description 4
- 229910003002 lithium salt Inorganic materials 0.000 description 4
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- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
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- 239000010949 copper Substances 0.000 description 3
- IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 238000002411 thermogravimetry Methods 0.000 description 3
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- YEJRWHAVMIAJKC-UHFFFAOYSA-N 4-Butyrolactone Chemical compound O=C1CCCO1 YEJRWHAVMIAJKC-UHFFFAOYSA-N 0.000 description 2
- OZJPLYNZGCXSJM-UHFFFAOYSA-N 5-valerolactone Chemical compound O=C1CCCCO1 OZJPLYNZGCXSJM-UHFFFAOYSA-N 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 2
- OIFBSDVPJOWBCH-UHFFFAOYSA-N Diethyl carbonate Chemical compound CCOC(=O)OCC OIFBSDVPJOWBCH-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 229910012851 LiCoO 2 Inorganic materials 0.000 description 2
- 229910015643 LiMn 2 O 4 Inorganic materials 0.000 description 2
- 229910014689 LiMnO Inorganic materials 0.000 description 2
- 229910013290 LiNiO 2 Inorganic materials 0.000 description 2
- 229910013870 LiPF 6 Inorganic materials 0.000 description 2
- 229920000265 Polyparaphenylene Polymers 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- 239000006230 acetylene black Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910003481 amorphous carbon Inorganic materials 0.000 description 2
- 239000000010 aprotic solvent Substances 0.000 description 2
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- 239000004917 carbon fiber Substances 0.000 description 2
- MYWGVEGHKGKUMM-UHFFFAOYSA-N carbonic acid;ethene Chemical compound C=C.C=C.OC(O)=O MYWGVEGHKGKUMM-UHFFFAOYSA-N 0.000 description 2
- 150000005678 chain carbonates Chemical class 0.000 description 2
- MVPPADPHJFYWMZ-UHFFFAOYSA-N chlorobenzene Chemical compound ClC1=CC=CC=C1 MVPPADPHJFYWMZ-UHFFFAOYSA-N 0.000 description 2
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- 235000019441 ethanol Nutrition 0.000 description 2
- FKRCODPIKNYEAC-UHFFFAOYSA-N ethyl propionate Chemical compound CCOC(=O)CC FKRCODPIKNYEAC-UHFFFAOYSA-N 0.000 description 2
- CYEDOLFRAIXARV-UHFFFAOYSA-N ethyl propyl carbonate Chemical compound CCCOC(=O)OCC CYEDOLFRAIXARV-UHFFFAOYSA-N 0.000 description 2
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- KWGKDLIKAYFUFQ-UHFFFAOYSA-M lithium chloride Chemical compound [Li+].[Cl-] KWGKDLIKAYFUFQ-UHFFFAOYSA-M 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- KKQAVHGECIBFRQ-UHFFFAOYSA-N methyl propyl carbonate Chemical compound CCCOC(=O)OC KKQAVHGECIBFRQ-UHFFFAOYSA-N 0.000 description 2
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- UHOVQNZJYSORNB-UHFFFAOYSA-N monobenzene Natural products C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 2
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- JYVXNLLUYHCIIH-UHFFFAOYSA-N (+/-)-mevalonolactone Natural products CC1(O)CCOC(=O)C1 JYVXNLLUYHCIIH-UHFFFAOYSA-N 0.000 description 1
- RELMFMZEBKVZJC-UHFFFAOYSA-N 1,2,3-trichlorobenzene Chemical compound ClC1=CC=CC(Cl)=C1Cl RELMFMZEBKVZJC-UHFFFAOYSA-N 0.000 description 1
- AJKNNUJQFALRIK-UHFFFAOYSA-N 1,2,3-trifluorobenzene Chemical compound FC1=CC=CC(F)=C1F AJKNNUJQFALRIK-UHFFFAOYSA-N 0.000 description 1
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- CMTFMQAGUXZMHD-UHFFFAOYSA-N 5,6-difluoro-5-methylcyclohexa-1,3-diene Chemical compound CC1(F)C=CC=CC1F CMTFMQAGUXZMHD-UHFFFAOYSA-N 0.000 description 1
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Abstract
Description
| 양극 활물질 (중량%) |
바인더 (중량%) |
도전재 (중량%) |
용량 (mAh) |
저온수명 특성(mAh) | 구분 | |
| 비교예 1 | 93 | 3.5 | 3.5 | 2325 | 1324 | X |
| 비교예 2 | 94 | 3 | 3 | 2348 | 886 | X |
| 비교예 3 | 95 | 2.5 | 2.5 | 2382 | 1216 | X |
| 실시예 1 | 95 | 3 | 2 | 2377 | 1614 | ○ |
| 실시예 2 | 96 | 3 | 1 | 2416 | 1716 | ○ |
| 실시예 3 | 96 | 2.5 | 1.5 | 2416 | 1814 | ○ |
| 비교예 4 | 96 | 2 | 2 | 2405 | 1432 | X |
| 비교예 5 | 96 | 1 | 3 | 2413 | 1356 | X |
| 실시예 4 | 97 | 2 | 1 | 2425 | 1893 | ○ |
| 비교예 6 | 98 | 1.5 | 0.5 | 2370 | 964 | X |
Claims (7)
- 양극 활물질;바인더; 및도전재를 포함하며,상기 바인더와 도전재의 혼합 중량과 상기 양극 활물질의 중량비는 3 : 97 내지 5 : 95 중량%이고,상기 바인더 및 도전재의 혼합비는 1.6 내지 2 : 1 중량비이고,상기 양극 활물질은 하기 화학식 1로 표현되는 것인 리튬 이차 전지용 양극.[화학식 1]LixMyO2-z(상기 식에서, M은 M'1-kAk이고, M'은 Ni1-a-b(Ni1/2Mn1/2)aCob이고, 0.65 ≤ a + b ≤ 0.85 및 0.1 ≤ b ≤ 0.4이고,A는 도펀트이고,0 ≤ k < 0.05이고,0.95 ≤ x ≤ 1.05이고,x + y ≒ 2이고,0 ≤ z ≤ 0.05임)
- 삭제
- 삭제
- 제1항에 있어서,상기 바인더는 폴리비닐알콜, 카르복시메틸셀룰로즈, 히드록시프로필셀룰로즈, 디아세틸셀룰로즈, 폴리비닐클로라이드, 카르복실화된 폴리비닐클로라이드, 폴리비닐플루오라이드, 에틸렌 옥사이드를 포함하는 폴리머, 폴리비닐피롤리돈, 폴리우레탄, 폴리테트라플루오로에틸렌, 폴리비닐리덴 플루오라이드, 폴리에틸렌, 폴리프로필렌, 스티렌-부타디엔 러버, 아크릴레이티드 스티렌-부타디엔 러버, 에폭시 수지, 나일론 및 이들의 혼합물로 이루어진 군으로부터 선택되는 것인 리튬 이차 전지용 양극.
- 제1항에 있어서,상기 도전재는 탄소계 물질, 금속계 물질, 도전성 폴리머 및 이들의 혼합물로 이루어진 군으로부터 선택되는 것인 리튬 이차 전지용 양극.
- 제1항, 제4항 및 제5항 중 어느 한 항에 따른 양극;음극 활물질을 포함하는 음극; 및비수 전해질을 포함하는 리튬 이차 전지.
- 제6항에 있어서,상기 음극 활물질은 리튬 이온을 가역적으로 인터칼레이션/디인터칼레이션할 수 있는 탄소계 물질인 리튬 이차 전지.
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| US12/684,868 US10381126B2 (en) | 2009-02-13 | 2010-01-08 | Positive electrode for rechargeable lithium battery and rechargeable lithium battery including same |
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| WO2009099061A1 (ja) * | 2008-02-04 | 2009-08-13 | Sumitomo Chemical Company, Limited | 複合金属酸化物およびナトリウム二次電池 |
| KR20100119760A (ko) | 2008-02-04 | 2010-11-10 | 스미또모 가가꾸 가부시키가이샤 | 복합 금속 산화물 및 나트륨 이차 전지 |
| JP5309581B2 (ja) * | 2008-02-04 | 2013-10-09 | 住友化学株式会社 | 正極活物質用粉末、正極活物質およびナトリウム二次電池 |
| KR101073013B1 (ko) * | 2009-02-19 | 2011-10-12 | 삼성에스디아이 주식회사 | 리튬 이차 전지용 양극 및 이를 포함하는 리튬 이차 전지 |
| CN107112500B (zh) | 2014-10-02 | 2020-05-19 | 株式会社Lg 化学 | 包括橡胶类粘合剂的正极活性材料浆料及由其制备的正极 |
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| JP2001266853A (ja) | 2000-03-22 | 2001-09-28 | Matsushita Electric Ind Co Ltd | リチウム2次電池用正極ペーストの製造方法 |
| KR20030076431A (ko) * | 2002-03-22 | 2003-09-26 | 산요덴키가부시키가이샤 | 비수 전해질 이차 전지 |
| KR20070109854A (ko) * | 2006-05-10 | 2007-11-15 | 주식회사 엘지화학 | 고성능 리튬 이차전지용 재료 |
| WO2008138003A1 (en) | 2007-05-08 | 2008-11-13 | The Regents Of The University Of California | High-discharge-rate lithium ion battery |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20100092702A (ko) | 2010-08-23 |
| US20100209776A1 (en) | 2010-08-19 |
| US10381126B2 (en) | 2019-08-13 |
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