KR102300948B1 - 마그네슘 전지 음극용 탄소 소성체 및 이의 제조방법 - Google Patents
마그네슘 전지 음극용 탄소 소성체 및 이의 제조방법 Download PDFInfo
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Abstract
Description
도 2a는 0.2 mA/cm2의 전류 속도에서 GC-NS-Anode 및 Mo-Anode의 핵형성 과전압을 나타낸 그래프이며, 도 2b는 2 mA/cm2의 전류 속도에서 GC-NS-Anode 및 Mo-Anode의 핵형성 과전압을 나타낸 그래프이고, 도 2c는 초기 10 사이클에서 마그네슘 도금/스트립의 전압 히스테리시스를 나타낸 그래프이며, 도 2d는 0.2 내지 2 mA cm-2 사이의 충방전율 대 CE 관계를 나타낸 그래프이고, 도 2e는 사이클링 거동을 나타낸 그래프(삽입도는 GC-NS-Anode의 시간 대 전압 플롯)이다.
도 3은 (a) 0.2 mA/cm2, (b) 0.5 mA/cm2, (c) 1.0 mA/cm2 및 (d) 2.0 mA/cm2의 전류 속도에서 Mo-Anode의 정전류 Mg 금속 도금/스트라이핑 사이클을 나타낸 도면이다.
도 4는 (a) 0.2 mA/cm2, (b) 0.5 mA/cm2, (c) 1.0 mA/cm2 및 (d) 2.0 mA/cm2의 전류 속도에서 GC-NS-Anode의 정전류 Mg 금속 도금/스트라이핑 사이클을 나타낸 도면이다.
도 5는 (a) 0.2 mA/cm2, (b) 0.5 mA/cm2, (c) 1.0 mA/cm2 및 (d) 2.0 mA/cm2의 전류 속도에서 10사이클 동안 정전류 Mg 금속 도금/스트라이핑 프로파일에 대한 GC-NS-Anode와 Mo-Anode 사이의 평균 고원 과전압를 비교한 그래프이다.
도 6은 1,000회의 방전-충전 사이클 후 GC-NS-Anode의 XPS (a) C 1s, (b) O 1s, (c) Mg 1s 및 (d) Cl 2p 스펙트럼이다.
도 7은 (a) GC-NS, (b) Mo, (c) Cu, (d) SS, (e) GF 분리막이 있는 Mg 금속 및 (f) 폴리프로필렌 세퍼레이터로 Mg 금속에 Mg 도금하는 경우와 같이 서로 다른 기판에서의 Mg 도금에 대한 핵형성 분극을 나타낸 그래프이다. 각 도면의 삽입은 0.2 mA/cm2의 전류 속도에서 5 mAh/cm2의 면적 용량에 의한 Mg 증착 후의 ex situ 전지 구성을 나타낸다.
도 8은 0.2 mA/cm2의 전류 속도에서 5 mAh/cm2의 면적 용량으로 Mg 금속을 증착시킨 후 (a) Mo-Anode 및 (d) Mo-Anode에 직면한 GF 분리기의 XRD 패턴이며, Mg 금속 증착 전 (b) Mo-Anode 및 (e) GF 분리기와 Mg 금속 증착 후 (c) Mo-Anode 및 (f) GF 분리기의 SEM 이미지이다.
도 9는 0.2 mA/cm2의 전류 속도에서 5 mAh/cm2의 면적 용량으로 Mg 금속을 증착시킨 후 (a) GC-NS-Anode 및 (d) GC-NS-Anode에 직면한 GF 분리기의 XRD 패턴이며, Mg 금속 증착 전 (b) GC-NS-Anode 및 (e) GF 분리기와 Mg 금속 증착 후 (c) GC-NS-Anode 및 (f) GF 분리기의 SEM 이미지이다.
도 10은 0.05 mAh/cm2의 면적 용량을 갖는 Mg 금속 증착 후 GC-NS-Anode의 (a) FE-SEM 이미지, (b) 에너지 분산 분석(EDS) 맵핑 데이터 및 (c) EDS 스펙트럼이다. 삽입표는 SEM-EDS 원소 분석의 결과를 보여준다.
도 11은 (a) 그래핀 시트에 대해 그리고 그래핀 시트를 따라 정상적인 모습을 나타내는 수소 및 산소로 종결되는 그래핀 시트의 Mg 흡착의 이완된 구성이며, (b) Cu (111), (c) Mo (110) 및 (d) Mg (0001)에서 가장 낮은 표면 에너지 슬래브 및 완화된 Mg 흡착 구성을 나타낸 것이다. Cu, Mo 및 Mg 원자는 각각 청색, 분홍색 및 주황색이다.
도 12는 (a) 결함이 없는 그래핀 시트 및 (b) 단일 공극을 갖는 그래핀 시트에서의 Mg 흡착 구성을 나타낸 것이다.
도 13은 (a) 합성된 쉐브렐상(Chevrel-phase) Mo6S8의 XRD 패턴 및 (b) All-phenyl-complex 전해질에서 쉐브렐상(Chevrel-phase) Mo6S8 양극이 있는 GC-NS-Anode 또는 Mo-Anode로 구성된 전체 셀의 전기 화학적 성능을 나타낸 그래프이다.
Claims (15)
- 나노 섬유들이 3차원적으로 얽혀 있는 네트워크 망상구조를 가지는 촉매형 탄소 나노 템플릿이며,
50 nm 초과의 기공 크기를 갖는 마크로 기공과 20 내지 30 nm의 기공 크기를 갖는 메조 기공이 혼재되어 있는 것을 특징으로 하는 마그네슘 전지 음극용 탄소 소성체. - 제1항에 있어서, 상기 나노 섬유의 직경은 10 내지 25 nm이며, 길이는 10 내지 100 ㎛인 것을 특징으로 하는 마그네슘 전지 음극용 탄소 소성체.
- 삭제
- 제1항에 있어서, 상기 마그네슘 전지 음극용 탄소 소성체는 BET 비표면적이 90 내지 120 m2/g인 것을 특징으로 하는 마그네슘 전지 음극용 탄소 소성체.
- 제1항에 있어서, 상기 마그네슘 전지 음극용 탄소 소성체는 글루코나세토박터 자일리눔(Gluconacetobacter xylinum)으로부터 제조된 것을 특징으로 하는 마그네슘 전지 음극용 탄소 소성체.
- (A) 셀룰로오스를 질소 가스 하에서 1차 열처리를 수행하는 단계; 및
(B) 상기 1차 열처리된 셀룰로오스를 아르곤 가스 하에서 2차 열처리를 수행하여 탄소 소성체를 제조하는 단계;를 포함하는 것을 특징으로 하는 마그네슘 전지 음극용 탄소 소성체의 제조방법. - 제6항에 있어서, 상기 (A)단계는 600 내지 1000 ℃에서 1 내지 4시간 동안 수행되며, (B)단계는 2500 내지 3000 ℃에서 1 내지 4시간 동안 수행되는 것을 특징으로 하는 마그네슘 전지 음극용 탄소 소성체의 제조방법.
- 제6항에 있어서, 상기 셀룰로오스는 글루코나세토박터 자일리눔(Gluconacetobacter xylinum)으로부터 제조된 것을 특징으로 하는 마그네슘 전지 음극용 탄소 소성체의 제조방법.
- 제1항, 제2항, 제4항 및 제5항 중 어느 한 항의 탄소 소성체를 포함하는 마그네슘 전지용 음극.
- 제9항의 마그네슘 전지용 음극을 포함하는 것을 특징으로 하는 마그네슘 이차전지.
- 제10항에 있어서, 상기 마그네슘 이차전지는 올페닐복합체(all phenyl complex) 전해질을 사용하는 것을 특징으로 하는 마그네슘 이차전지.
- 제11항에 있어서, 상기 올페닐복합체(all phenyl complex) 전해질은 유기용매에 염화알루미늄(AlCl3) 및 phMgCl이 혼합되어 있는 것을 특징으로 하는 마그네슘 이차전지.
- 제12항에 있어서, 상기 염화알루미늄(AlCl3) 및 phMgCl은 1 : 3-7의 몰비로 혼합되는 것을 특징으로 하는 마그네슘 이차전지.
- 제9항의 마그네슘 전지용 음극을 포함하는 것을 특징으로 하는 캐패시터.
- 제9항의 마그네슘 전지용 음극을 포함하는 장치로서, 상기 장치는 통신장비, 에너지저장시스템(Energy Storage System, ESS) 및 운송수단으로 이루어진 군에서 선택된 것을 특징으로 하는 장치.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020190157936A KR102300948B1 (ko) | 2019-12-02 | 2019-12-02 | 마그네슘 전지 음극용 탄소 소성체 및 이의 제조방법 |
| US16/817,757 US11411219B2 (en) | 2019-12-02 | 2020-03-13 | Calcined carbon material for magnesium battery anode and method for preparing the same |
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| US20130302697A1 (en) * | 2012-05-14 | 2013-11-14 | Yanbo Wang | Rechargeable magnesium-ion cell having a high-capacity cathode |
| KR101401062B1 (ko) * | 2012-11-22 | 2014-05-29 | 한국과학기술연구원 | 마그네슘 이차전지용 전해질 및 이의 제조방법 |
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| JP5162817B2 (ja) | 2005-08-26 | 2013-03-13 | 宇部興産株式会社 | ネットワーク状炭素材料 |
| US20140211370A1 (en) * | 2013-01-25 | 2014-07-31 | Ionova Technologies, Inc. | Electrochemical Cell, Related Material, Process for Production, and Use Thereof |
| US10847810B2 (en) * | 2013-10-22 | 2020-11-24 | Cornell University | Nanostructures for lithium air batteries |
| TWI752933B (zh) * | 2016-01-07 | 2022-01-21 | 威廉馬許萊斯大學 | 藉由催化劑溶液之奈米碳管混合材料的簡易製備 |
| KR20190116012A (ko) | 2018-04-04 | 2019-10-14 | 대주전자재료 주식회사 | 규소 복합 산화물 및 이의 제조 방법 |
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| US20130302697A1 (en) * | 2012-05-14 | 2013-11-14 | Yanbo Wang | Rechargeable magnesium-ion cell having a high-capacity cathode |
| KR101401062B1 (ko) * | 2012-11-22 | 2014-05-29 | 한국과학기술연구원 | 마그네슘 이차전지용 전해질 및 이의 제조방법 |
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| Burcu Dursun et al. Cellulose. 2016, Vol. 23, pp. 2597-2607* |
| Mani Pujitha Illa et al. Emergent Materials. 2018, Vol. 1, pp. 105-120 |
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