KR20130117711A - 성능이 우수한 리튬 이차전지 - Google Patents
성능이 우수한 리튬 이차전지 Download PDFInfo
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Abstract
Description
도 2는 실험예 3에 따른 가스 발생량의 비교 그래프이다.
| 음극 전위 (V) | 양극 전위 (V) | |
| 실시예 1 | 1.3 | 4.8 |
| 실시예 2 | 1.4 | 4.9 |
| 비교예 1 | 1.55 | 5.05 |
Claims (18)
- 양극 집전체 상에 양극 합제층이 형성되어 있는 양극, 음극 집전체 상에 음극 합제층이 형성되어 있는 음극, 및 상기 양극과 상기 음극 사이에 배치되는 분리막으로 구성된 전극조립체 및 전해액을 포함하는 리튬 이차전지로서,
상기 음극이 음극 활물질로서 리튬 티타늄 산화물(Lithium Titanium Oxide: LTO)을 포함하고 있고,
상기 양극 합제층의 네 면의 길이가 상기 음극 합제층의 네 면의 길이보다 같거나 길어서 상기 양극 합제층의 면적이 상기 음극 합제층의 면적보다 같거나 큰 것을 특징으로 하는 리튬 이차전지. - 제 1 항에 있어서, 상기 리튬 이차전지는 3.3 ~ 4V 범위의 충전 컷 오프 전압(cut-off voltage)을 가지며, 상기 컷 오프 전압에 도달시 음극의 전위는, 양극의 전위가 4.95V를 초과하지 않는 범위에서 0.75 ~ 1.545V인 것을 특징으로 하는 리튬 이차전지.
- 제 2 항에 있어서, 상기 리튬 이차전지의 컷 오프 전압(cut-off voltage)은 3.3 ~ 3.5V이고, 상기 컷 오프 전압에 도달시 상기 음극의 전위는, 양극의 전위가 4.95V를 초과하지 않는 범위에서 1.2 ~ 1.545V인 것을 특징으로 하는 리튬 이차전지.
- 제 1 항에 있어서, 상기 리튬 티타늄 산화물(LTO)은 하기 화학식 1로 표시되는 것을 특징으로 하는 리튬 이차전지:
LiaTibO4 (1)
상기 식에서, 0.5≤a≤3, 1≤b≤2.5 이다. - 제 4 항에 있어서, 상기 리튬 티타늄 산화물은 Li1.33Ti1.67O4 또는 LiTi2O4인 것을 특징으로 하는 리튬 이차전지.
- 제 1 항에 있어서, 상기 양극은 고전압 양극인 것을 특징으로 하는 리튬 이차전지.
- 제 6 항에 있어서, 상기 양극은 양극 활물질로서 하기 화학식 2로 표시되는 스피넬 구조의 리튬 망간 복합 산화물을 포함하는 것을 특징으로 하는 리튬 이차전지:
LixMyMn2-yO4-zAz (2)
상기 식에서, 0.9≤x≤1.2, 0<y<2, 0≤z<0.2이고,
M은 Al, Mg, Ni, Co, Fe, Cr, V, Ti, Cu, B, Ca, Zn, Zr, Nb, Mo, Sr, Sb, W, Ti 및 Bi로 이루어진 군에서 선택되는 하나 이상의 원소이며;
A는 -1 또는 -2가의 하나 이상의 음이온이다. - 제 7 항에 있어서, 상기 화학식 2로 표시되는 리튬 망간 복합 산화물은 하기 화학식 3으로 표시되는 리튬 니켈 망간 복합 산화물인 것을 특징으로 하는 리튬 이차전지:
LixNiyMn2-yO4 (3)
상기 식에서, 0.9≤x≤1.2, 0.4≤y≤0.5이다. - 제 8 항에 있어서, 상기 리튬 니켈 망간 복합 산화물은 LiNi0.5Mn1.5O4 또는 LiNi0.4Mn1.6O4인 것을 특징으로 하는 리튬 이차전지.
- 제 1 항에 있어서, 상기 음극 합제층의 면적이 상기 양극 합제층의 면적을 기준으로 80~100%인 것을 특징으로 하는 리튬 이차전지.
- 제 10 항에 있어서, 상기 음극 합제층의 면적이 상기 양극 합제층의 면적을 기준으로 90~100%인 것을 특징으로 하는 리튬 이차전지.
- 제 1 항에 있어서, 상기 음극의 용량은 상기 양극의 용량보다 작거나 같은 것을 특징으로 하는 리튬 이차전지.
- 제 12 항에 있어서, 상기 음극의 용량이 상기 양극의 용량을 기준으로 80~100%인 것을 특징으로 하는 리튬 이차전지.
- 제 13 항에 있어서, 상기 음극의 용량이 상기 양극의 용량을 기준으로 90~100%인 것을 특징으로 하는 리튬 이차전지.
- 제 1 항에 따른 리튬 이차전지를 단위전지로 포함하는 것을 특징으로 하는 전지모듈.
- 제 15 항에 따른 전지모듈을 포함하는 것을 특징으로 하는 전지팩.
- 제 16 항에 따른 전지팩을 포함하는 것을 특징으로 하는 디바이스.
- 제 17 항에 있어서, 상기 디바이스는 전기자동차, 하이브리드 전기자동차, 플러그-인 하이브리드 전기자동차, 또는 전력저장용 시스템인 것을 특징으로 하는 디바이스.
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| KR20130117711A true KR20130117711A (ko) | 2013-10-28 |
| KR101502832B1 KR101502832B1 (ko) | 2015-03-17 |
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| US (1) | US9899663B2 (ko) |
| EP (1) | EP2811569B1 (ko) |
| JP (1) | JP5980964B2 (ko) |
| KR (1) | KR101502832B1 (ko) |
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| US12230784B2 (en) | 2019-01-17 | 2025-02-18 | Lg Energy Solution, Ltd. | Lithium metal battery |
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| CN105940543A (zh) * | 2014-01-23 | 2016-09-14 | 日立化成株式会社 | 锂离子电池系统 |
| KR101976174B1 (ko) | 2016-02-24 | 2019-05-09 | 주식회사 엘지화학 | 리튬 이차전지용 전극 조립체, 이를 포함하는 리튬 이차전지 및 전지모듈 |
| WO2018165824A1 (en) * | 2017-03-13 | 2018-09-20 | GM Global Technology Operations LLC | Methods to stabilize lithium titanate oxide (lto) by electrolyte pretreatment |
| US11264606B2 (en) | 2017-03-13 | 2022-03-01 | GM Global Technology Operations LLC | Methods to stabilize lithium titanate oxide (LTO) by surface coating |
| US10833326B2 (en) | 2018-01-15 | 2020-11-10 | International Business Machines Corporation | Low-voltage microbattery with vanadium-based cathode |
| KR102328260B1 (ko) | 2018-10-31 | 2021-11-18 | 주식회사 엘지에너지솔루션 | 리튬 이차전지 |
| CN115336066A (zh) * | 2020-04-28 | 2022-11-11 | 株式会社村田制作所 | 二次电池 |
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2013
- 2013-04-17 KR KR1020130042563A patent/KR101502832B1/ko active Active
- 2013-04-17 CN CN201380013271.4A patent/CN104170150B/zh active Active
- 2013-04-17 EP EP13778595.2A patent/EP2811569B1/en active Active
- 2013-04-17 JP JP2014560869A patent/JP5980964B2/ja active Active
- 2013-04-17 WO PCT/KR2013/003260 patent/WO2013157854A1/ko not_active Ceased
-
2014
- 2014-09-10 US US14/482,266 patent/US9899663B2/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US12230784B2 (en) | 2019-01-17 | 2025-02-18 | Lg Energy Solution, Ltd. | Lithium metal battery |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104170150B (zh) | 2017-11-03 |
| US9899663B2 (en) | 2018-02-20 |
| EP2811569A4 (en) | 2015-06-24 |
| US20140377657A1 (en) | 2014-12-25 |
| JP2015513773A (ja) | 2015-05-14 |
| JP5980964B2 (ja) | 2016-08-31 |
| KR101502832B1 (ko) | 2015-03-17 |
| EP2811569A1 (en) | 2014-12-10 |
| WO2013157854A1 (ko) | 2013-10-24 |
| EP2811569B1 (en) | 2017-08-16 |
| CN104170150A (zh) | 2014-11-26 |
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