KR102484893B1 - 리튬 금속 이차 전지용 음극 및 이를 포함하는 리튬 금속 이차 전지 - Google Patents
리튬 금속 이차 전지용 음극 및 이를 포함하는 리튬 금속 이차 전지 Download PDFInfo
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- KR102484893B1 KR102484893B1 KR1020170140228A KR20170140228A KR102484893B1 KR 102484893 B1 KR102484893 B1 KR 102484893B1 KR 1020170140228 A KR1020170140228 A KR 1020170140228A KR 20170140228 A KR20170140228 A KR 20170140228A KR 102484893 B1 KR102484893 B1 KR 102484893B1
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- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 54
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910003481 amorphous carbon Inorganic materials 0.000 claims abstract description 8
- 238000007599 discharging Methods 0.000 claims description 15
- 239000003792 electrolyte Substances 0.000 claims description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 10
- 229910052799 carbon Inorganic materials 0.000 claims description 9
- 238000001069 Raman spectroscopy Methods 0.000 claims description 3
- 238000004458 analytical method Methods 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 19
- 229910001416 lithium ion Inorganic materials 0.000 description 19
- 230000000052 comparative effect Effects 0.000 description 11
- 238000004070 electrodeposition Methods 0.000 description 8
- 230000007423 decrease Effects 0.000 description 5
- 229910003002 lithium salt Inorganic materials 0.000 description 4
- 159000000002 lithium salts Chemical class 0.000 description 4
- 238000007086 side reaction Methods 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- JBTWLSYIZRCDFO-UHFFFAOYSA-N ethyl methyl carbonate Chemical compound CCOC(=O)OC JBTWLSYIZRCDFO-UHFFFAOYSA-N 0.000 description 2
- 230000014509 gene expression Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 229910011322 LiNi0.6Mn0.2Co0.2O2 Inorganic materials 0.000 description 1
- 229910013870 LiPF 6 Inorganic materials 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 229910021389 graphene Inorganic materials 0.000 description 1
- 229910021385 hard carbon Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
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- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/362—Composites
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- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/134—Electrodes based on metals, Si or alloys
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- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
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- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
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- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/133—Electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx
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- H—ELECTRICITY
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- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
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- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/38—Selection of substances as active materials, active masses, active liquids of elements or alloys
- H01M4/381—Alkaline or alkaline earth metals elements
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- 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
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Abstract
Description
도 2a는 제2 전극층에 리튬 이온들이 전착되는 것을 도식적으로 나타낸 단면도이다.
도 2b는 제2 전극층에 리튬 이온들이 전착되는 것을 도식적으로 나타낸 평면도이다.
도 3a는 실시예 1의 제2 전극층에 전착된 리튬 이온들의 SEM 사진이고, 도 4b는 비교예 1에서 제2 전극층이 없는 경우 리튬 이온들의 SEM 사진이다.
도 4a 및 도 4b는 10회 동안 실시예 1 및 비교예 1의 리튬 금속 이차 전지의 충방전을 실시한 후 캐패시티와 전압과의 관계를 나타낸 그래프이다.
도 5는 실시예 1 및 비교예 1에서 캐패시티와 전압과의 관계를 나타낸 그래프이다.
도 6은 실시예 1 및 비교예 1에서 충방전을 반복적으로 실시할 경우 캐패시티에 대해 나타낸 그래프이다.
제1 전극층: 110 제2 전극층: 120
리튬 이온들: 200
Claims (7)
- 리튬을 포함하는 제1 전극층; 및
상기 제1 전극층 상에 제공되고, 비결정질 탄소를 포함하는 제2 전극층;을 포함하고,
상기 제2 전극층은
1 내지 300 m2/g의 비표면적을 갖는 것이며,
상기 제2 전극층은 복수의 기공들을 포함하고,
상기 제2 전극층은 30 내지 50%의 기공률을 갖는 것이며,
상기 제2 전극층의 저항은 10 내지 25mΩcm2이며,
상기 제2 전극층은 충방전 시 전하량이 60 내지 80 μAh/cm2 인 것인 리튬 금속 이차 전지용 음극. - 삭제
- 제1항에 있어서,
상기 제2 전극층은
카본 페이퍼 또는 카본 시트인 것인 리튬 금속 이차 전지용 음극. - 제1항에 있어서,
상기 제2 전극층은
라만(Raman) 분석법의 G band 피크 강도(peak intensity)/D band 피크 강도(peak intensity) 값이 0.1 내지 1.0인 것인 리튬 금속 이차 전지용 음극. - 삭제
- 양극;
상기 양극과 대향하는 제1항의 음극; 및
상기 양극 및 상기 음극 사이에 제공되는 전해질;을 포함하는 리튬 금속 이차 전지. - 제6항에 있어서,
상기 리튬 금속 이차 전지를 충방전할 때,
복수의 리튬들은 상기 제2 전극층의 내부 및 상기 제2 전극층의 표면에 흡착되는 것인 리튬 금속 이차 전지.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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KR1020170140228A KR102484893B1 (ko) | 2017-10-26 | 2017-10-26 | 리튬 금속 이차 전지용 음극 및 이를 포함하는 리튬 금속 이차 전지 |
US15/829,658 US20190131619A1 (en) | 2017-10-26 | 2017-12-01 | Negative electrode for lithium metal secondary battery and lithium metal secondary battery including the same |
CN201711259646.1A CN109713222B (zh) | 2017-10-26 | 2017-12-04 | 用于锂金属二次电池组的负极及包含其的锂金属二次电池组 |
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KR1020170140228A KR102484893B1 (ko) | 2017-10-26 | 2017-10-26 | 리튬 금속 이차 전지용 음극 및 이를 포함하는 리튬 금속 이차 전지 |
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KR20190046430A KR20190046430A (ko) | 2019-05-07 |
KR102484893B1 true KR102484893B1 (ko) | 2023-01-04 |
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US (1) | US20190131619A1 (ko) |
KR (1) | KR102484893B1 (ko) |
CN (1) | CN109713222B (ko) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009140648A (ja) | 2007-12-04 | 2009-06-25 | Panasonic Corp | リチウム電池 |
JP2017004895A (ja) * | 2015-06-15 | 2017-01-05 | 信越化学工業株式会社 | 非水電解質二次電池用負極活物質、非水電解質二次電池用負極、及び非水電解質二次電池、並びに非水電解質二次電池用負極材の製造方法 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH11135116A (ja) * | 1997-10-27 | 1999-05-21 | Fuji Elelctrochem Co Ltd | リチウム二次電池用負極及びその負極を用いたリチウム二次電池、並びにそのリチウム二次電池用負極の製造方法 |
JP4997674B2 (ja) * | 2001-09-03 | 2012-08-08 | 日本電気株式会社 | 二次電池用負極および二次電池 |
KR101978726B1 (ko) * | 2011-06-03 | 2019-05-15 | 가부시키가이샤 한도오따이 에네루기 켄큐쇼 | 축전 장치 및 그 제작 방법 |
KR101920714B1 (ko) * | 2012-05-16 | 2018-11-21 | 삼성전자주식회사 | 리튬 전지용 음극 및 이를 포함하는 리튬 전지 |
CN102709592B (zh) * | 2012-06-01 | 2014-08-27 | 中国东方电气集团有限公司 | 一种锂离子二次电池及其制备方法 |
US11283104B2 (en) * | 2012-06-01 | 2022-03-22 | Global Graphene Group, Inc. | Rechargeable dual electroplating cell |
KR102034719B1 (ko) | 2012-12-21 | 2019-10-22 | 삼성전자주식회사 | 리튬공기전지용 보호음극 및 이를 포함한 리튬공기전지 |
-
2017
- 2017-10-26 KR KR1020170140228A patent/KR102484893B1/ko active Active
- 2017-12-01 US US15/829,658 patent/US20190131619A1/en not_active Abandoned
- 2017-12-04 CN CN201711259646.1A patent/CN109713222B/zh active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009140648A (ja) | 2007-12-04 | 2009-06-25 | Panasonic Corp | リチウム電池 |
JP2017004895A (ja) * | 2015-06-15 | 2017-01-05 | 信越化学工業株式会社 | 非水電解質二次電池用負極活物質、非水電解質二次電池用負極、及び非水電解質二次電池、並びに非水電解質二次電池用負極材の製造方法 |
Non-Patent Citations (2)
Title |
---|
Guangyuan Zheng et al., Nature Nanotechnology volume 9, 618-623 (2014.07.27.) |
Keyu Xie et al., ACS Appl. Mater. Interfaces 2017, 9, 5, 4605-4613 (2017.01.13.) |
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Publication number | Publication date |
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CN109713222B (zh) | 2022-04-08 |
KR20190046430A (ko) | 2019-05-07 |
CN109713222A (zh) | 2019-05-03 |
US20190131619A1 (en) | 2019-05-02 |
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