KR20100015324A - 정극 형성재, 그 재료와 제조 방법, 및 리튬 이온 2 차 전지 - Google Patents
정극 형성재, 그 재료와 제조 방법, 및 리튬 이온 2 차 전지 Download PDFInfo
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- 239000000463 material Substances 0.000 title claims abstract description 72
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims description 13
- 229910001416 lithium ion Inorganic materials 0.000 title claims description 13
- 238000004519 manufacturing process Methods 0.000 title claims description 10
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 97
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 80
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- 229910012851 LiCoO 2 Inorganic materials 0.000 claims description 18
- 229910052744 lithium Inorganic materials 0.000 claims description 18
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 17
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- 238000000034 method Methods 0.000 claims description 9
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- -1 LiMnCoO 4 Inorganic materials 0.000 claims description 7
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 229910011281 LiCoPO 4 Inorganic materials 0.000 claims description 4
- 229910010707 LiFePO 4 Inorganic materials 0.000 claims description 4
- 229910015643 LiMn 2 O 4 Inorganic materials 0.000 claims description 4
- 229910016118 LiMn1.5Ni0.5O4 Inorganic materials 0.000 claims description 4
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- 229910000625 lithium cobalt oxide Inorganic materials 0.000 description 1
- BFZPBUKRYWOWDV-UHFFFAOYSA-N lithium;oxido(oxo)cobalt Chemical compound [Li+].[O-][Co]=O BFZPBUKRYWOWDV-UHFFFAOYSA-N 0.000 description 1
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- 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
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Abstract
Description
정극 활물질 (LiCoO2) | 바인더 (PVdF) | CNF | 탄소 분말 | 저율 방전 용량 | 고율 방전 용량 | 고율 방전시 용량 유지율 | |
실시예 1 | 100 | 5 | 5 | 0 | 120 | 114 | 95 |
실시예 2 | 100 | 5 | 4 | 0 | 120 | 116 | 93 |
실시예 3 | 100 | 5 | 3 | 0 | 119 | 105 | 88 |
실시예 4 | 100 | 5 | 1 | 0 | 122 | 105 | 83 |
실시예 5 | 100 | 5 | 8 | 0 | 115 | 110 | 96 |
실시예 6 | 100 | 5 | 4 | 3 | 115 | 107 | 93 |
실시예 7 | 100 | 5 | 5 | 3 | 115 | 107 | 93 |
비교예 1 | 100 | 5 | 0 | 1 | 105 | 78 | 74 |
비교예 2 | 100 | 5 | 0 | 5 | 107 | 94 | 88 |
비교예 3 | 100 | 5 | 0 | 10 | 103 | 92 | 89 |
Claims (17)
- 전지의 정극을 형성하기 위한 정극 형성재로서,정극 활물질의 입자와, 이들 정극 활물질의 입자 표면에 그물 형상으로 부착되어 있는 미세 탄소 섬유를 함유하는 것을 특징으로 하는 정극 형성재.
- 제 1 항에 있어서,상기 정극 활물질은 평균 입경 0.03 ㎛ ∼ 40 ㎛ 의 미립자이며, 상기 미세 탄소 섬유가 평균 섬유 직경 1 ㎚∼ 100 ㎚ 및 애스펙트비 5 이상의 카본 나노 파이버이고, 이들 카본 나노 파이버의 표면은 산화 처리되어 있는, 정극 형성재.
- 제 2 항에 있어서,결착제를 함유하고, 상기 정극 활물질 100 질량부에 대하여 상기 미세 탄소 섬유의 함유량은 0.5 ∼ 15 질량부이며, 상기 그 결착제의 함유량은 0.5 ∼ 10 질량부인, 정극 형성재.
- 제 1 항에 있어서,상기 정극 활물질보다 미세한 탄소 분말을 추가로 함유하는, 정극 형성재.
- 제 4 항에 있어서,상기 탄소 분말의 함유량은 상기 정극 활물질 100 질량부에 대하여 0.5 ∼ 5 질량부인, 정극 형성재.
- 제 1 항에 있어서,상기 정극 활물질은 리튬 함유 천이 금속 산화물인, 리튬 전지의 정극을 형성하기 위한, 정극 형성재.
- 제 6 항에 있어서,상기 정극 활물질의 리튬 함유 천이 금속 산화물은 LiCoO2, LiNiO2, LiMn2O4, LiMnCoO4, LiCoPO4, LiMnCrO4, LiNiVO4, LiMn1 .5Ni0 .5O4, LiMnCrO4, LiCoVO4, LiFePO4 및 각 상기 조성의 일부를 다른 Mn, Mg, Ni, Co, Cu, Zn, Ge 에서 선택되는 1 종 또는 2 종 이상의 금속 원소로 치환한 비화학량론적 화합물로 이루어지는 군에서 선택되는 적어도 1 종인, 정극 형성재.
- 액 중에서 분산제를 필요로 하지 않고 분산되어 정극 활물질의 입자 표면에 그물 형상으로 부착되는 정극 형성재용 미세 탄소 섬유로서,평균 섬유 직경 1 ㎚ ∼ 100 ㎚ 및 애스펙트비 5 이상의 카본 나노 파이버를 함유하고, 이들 카본 나노 파이버의, 표면이 산화 처리에 의해 친수화되어 있는 것을 특징으로 하는 미세 탄소 섬유.
- 표면을 산화 처리하여 친수화한 미세 탄소 섬유를, 용제 및 물에서 선택된 1 종 이상의 분산매에 분산시켜 이루어지고, 정극 활물질 표면에 미세 탄소 섬유의 그물 형상 피복을 형성하는 데에 이용하는, 정극 형성재용 분산액.
- 표면을 산화 처리하여 친수화한 미세 탄소 섬유를, 용제 및 물에서 선택된 1 종 이상의 분산매에 분산시켜 이루어지는 분산액에, 결착제를 첨가한 그물 형상 피복을 형성하는 데에 이용하는, 정극 형성재용 도료.
- 표면을 산화 처리하여 친수화한 미세 탄소 섬유를, 용제 및 물에서 선택된 1 종 이상의 분산매에 분산시켜 이루어지는 분산액과, 결착제와, 상기 정극 활물질을 함유하고, 정극 활물질의 입자 표면에 그물 형상 피복을 형성하는 데에 이용하는, 정극 형성재용 슬러리 내지 페이스트.
- 미세 탄소 섬유의 산성 현탁액에 산화제를 첨가하고, 산화 처리하여 미세 탄소 섬유의 표면을 친수화한 후에 그 미세 탄소 섬유를 여과 분리하여 회수하고, 이 미세 탄소 섬유를 분산매와 혼합하여 정극 형성재용 분산액을 제조하는 방법.
- 표면을 산화 처리하여 친수화한 미세 탄소 섬유를 분산매에 분산시킨 분산액에 결착제를 첨가하여 정극 형성재용 도료를 제조하는 방법.
- 표면을 산화 처리하여 친수화한 미세 탄소 섬유를 분산매에 분산시킨 분산액에 결착제와 정극 활물질을 첨가함으로써 정극 형성재용 슬러리 내지 페이스트를 제조하는 방법.
- 제 12 항 내지 제 14 항 중 어느 한 항에 있어서,상기 미세 탄소 섬유와 함께, 혹은 미세 탄소 섬유의 첨가 전후에, 정극 활물질보다 미세한 탄소 분말을 첨가하는 제조 방법.
- 알루미늄 집전체 상에, 제 11 항에 기재된 정극 형성재의 슬러리 내지 페이스트를 도포하고, 건조시켜 이루어지는, 리튬 이온 2 차 전지의 정극.
- 제 16 항에 기재된 정극과, 음극과, 상기 정극과 상기 음극을 격리시키는 세퍼레이터와, 상기 정극 및 상기 음극에 접촉하는 전해액을 함유하는, 리튬 이온 2 차 전지.
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JP4031009B2 (ja) * | 2004-08-16 | 2008-01-09 | 昭和電工株式会社 | リチウム系電池用正極及びそれを用いたリチウム系電池 |
TWI459616B (zh) | 2004-08-16 | 2014-11-01 | Showa Denko Kk | Lithium batteries with positive and the use of its lithium batteries |
JP2007086436A (ja) | 2005-09-22 | 2007-04-05 | Konica Minolta Business Technologies Inc | 画像形成装置 |
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2008
- 2008-03-28 JP JP2008085996A patent/JP5335264B2/ja not_active Expired - Fee Related
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- 2008-03-28 WO PCT/JP2008/056169 patent/WO2008123444A1/ja active Application Filing
- 2008-03-28 CN CN200880010027.1A patent/CN101682025B/zh not_active Expired - Fee Related
- 2008-03-28 KR KR1020097019094A patent/KR101520508B1/ko active IP Right Grant
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9853320B2 (en) | 2010-05-06 | 2017-12-26 | Samsung Sdi Co., Ltd. | Positive active material for rechargeable lithium battery and rechargeable lithium battery including same |
WO2016114589A1 (ko) * | 2015-01-13 | 2016-07-21 | 주식회사 엘지화학 | 리튬 이차전지의 양극 형성용 조성물의 제조방법, 및 이를 이용하여 제조한 양극 및 리튬 이차전지 |
US10290859B2 (en) | 2015-01-13 | 2019-05-14 | Lg Chem, Ltd. | Method of preparing composition for forming positive electrode of lithium secondary battery, and positive electrode and lithium secondary battery manufactured by using the composition |
KR20210099418A (ko) | 2020-02-04 | 2021-08-12 | 주식회사 동원파츠 | 반도체 제조 설비용 샤워 헤드 제조방법 및 그 제조방법에 따라 제조된 샤워 헤드 |
Also Published As
Publication number | Publication date |
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JP2008270204A (ja) | 2008-11-06 |
US8574759B2 (en) | 2013-11-05 |
EP2131422A4 (en) | 2012-04-25 |
JP5335264B2 (ja) | 2013-11-06 |
WO2008123444A1 (ja) | 2008-10-16 |
KR101520508B1 (ko) | 2015-05-14 |
CN101682025B (zh) | 2016-05-18 |
EP2131422B1 (en) | 2020-05-27 |
CN101682025A (zh) | 2010-03-24 |
EP2131422A1 (en) | 2009-12-09 |
US20100075229A1 (en) | 2010-03-25 |
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