KR20130014182A - 그래핀의 제조방법 - Google Patents
그래핀의 제조방법 Download PDFInfo
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- KR20130014182A KR20130014182A KR1020110076143A KR20110076143A KR20130014182A KR 20130014182 A KR20130014182 A KR 20130014182A KR 1020110076143 A KR1020110076143 A KR 1020110076143A KR 20110076143 A KR20110076143 A KR 20110076143A KR 20130014182 A KR20130014182 A KR 20130014182A
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- South Korea
- Prior art keywords
- graphene
- catalyst
- graphitization catalyst
- layer
- producing
- Prior art date
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Classifications
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- C01B32/00—Carbon; Compounds thereof
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- C01B32/184—Preparation
- C01B32/186—Preparation by chemical vapour deposition [CVD]
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
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Abstract
Description
도 2는 일구현예에 따른 그래핀을 구비하는 연료전지의 분해사시도를 나타낸다.
도 3은 도 2의 연료전지를 구성하는 막-전극 접합체(MEA)의 단면 모식도이다.
도 4는 일구현예에 따른 그래핀을 구비하는 전계 효과형 트랜지스터의 모식도를 나타낸다.
도 5a 및 도 5b는 각각 본 발명의 실시예 1 및 비교예 1에서 사용한 그래파이트화 촉매 표면의 광학 현미경 사진이다.
도 6a는 예비 열처리 온도에 따른 도메인 크기의 변화를 나타낸 광학 현미경 사진이고, 도 6b는 예비 열처리 온도에 따른 도메인 크기를 나타낸 그래프이다.
도 7은 예비 열처리 시간에 따른 그래파이트화 촉매의 예비 열처리 온도에 따른 도메인 크기 변화를 나타낸 편광 사진이다.
도 8a 및 도 8b는 각각 본 발명의 실시예 1 및 비교예 1에서 사용한 그래파이트화 촉매 표면의 조도를 나타내는 AFM(Atomic Force Microscope) 사진이다.
도 9a 및 도 9b는 각각 본 발명의 실시예 1 및 비교예 1의 시간 경과에 그래핀의 성장을 나타내는 광학 현미경 사진이다.
도 10은 본 발명의 실시예 1 및 비교예 1의 시간 경과에 따라 성장한 그래핀층의 투과율 및 면저항을 나타낸 그래프이다.
도 11은 비교예 1에 따라 얻어진 그래핀의 SEM 사진이다.
No. | 온도(℃) | 그레인 사이즈(㎛2) |
1 | 1050 | 16256 |
2 | 1000 | 13456 |
3 | 950 | 6084 |
4 | 900 | 3025 |
5 | 850 | 1149 |
6 | 800 | 740 |
Claims (17)
- 그래파이트화 촉매를 예비 열처리하는 단계;
상기 예비 열처리된 그래파이트화 촉매를 화학연마하는 단계; 및
상기 화학연마된 그패파이트화 촉매에 그래핀을 생성하는 단계;
를 포함하는 그래핀의 제조방법. - 제1항에 있어서,
상기 기상 탄소 공급원이 탄소수 1 내지 6개의 탄소 함유 화합물인 것을 특징으로 하는 그래핀의 제조방법. - 제1항에 있어서,
상기 기상 탄소 공급원이 일산화탄소, 메탄, 에탄, 에틸렌, 에탄올, 아세틸렌, 프로판, 프로필렌, 부탄, 부타디엔, 펜탄, 펜텐, 사이클로펜타디엔, 헥산, 사이클로헥산, 벤젠 및 톨루엔으로 이루어진 군으로부터 선택된 하나 이상인 것을 특징으로 하는 그래핀의 제조방법. - 제1항에 있어서,
상기 예비 열처리는 500 내지 3000℃의 온도에서 10분 내지 24시간 동안 행해지는 것을 특징으로 하는 그래핀의 제조방법. - 제1항에 있어서,
상기 화학연마는 상기 그래파이트화 촉매의 표면 조도가 50nm 이하가 될 때까지 수행되는 것을 특징으로 하는 그래핀의 제조방법. - 제1항에 있어서,
상기 열처리는 그래파이트화 촉매의 형상을 유지하면서 수행되는 것을 특징으로 하는 그래핀의 제조방법. - 제1항에 있어서,
상기 열처리 온도가 300 내지 2000℃인 것을 특징으로 하는 그래핀의 제조방법. - 제1항에 있어서,
상기 그래파이트화 촉매가 Ni, Co, Fe, Pt, Pd, Au, Al, Cr, Cu, Mg, Mn, Mo, Rh, Si, Ta, Ti, W, U, V 및 Zr로 이루어진 군으로부터 선택된 하나 이상인 것을 특징으로 하는 그래핀의 제조방법. - 제1항에 있어서,
상기 그래핀 생성 단계 후, 에천트에 의해 상기 그래파이트화 촉매를 제거함으로써 생성된 그래핀을 분리하는 단계를 더 포함하는 것을 특징으로 하는 그래핀의 제조방법. - 제1항에 있어서,
상기 기상 탄소 공급원과 함께 수소를 더 공급하는 것을 특징으로 하는 그래핀의 제조방법. - 제1항에 있어서,
상기 예비 열처리된 그래파이트화 촉매는 도메인 크기가 1㎛2 내지 1㎠인 것을 특징으로 하는 그래핀의 제조방법. - 제11항에 있어서,
상기 예비 열처리된 그래파이트화 촉매는 도메인 크기가 700㎛2 내지 16000㎛2인 것을 특징으로 하는 그래핀의 제조방법. - 예비 열처리되고 화학연마된 그래파이트화 촉매; 및
상기 그래파이트화 촉매의 적어도 일면에 형성된 그래핀을 포함하는 그래핀 적층체. - 제13항에 있어서,
상기 그래파이트화 촉매는 표면 조도가 50nm 이하인 것을 특징으로 하는 그래핀 적층체. - 제13항에 있어서,
상기 그래핀은 라만 스펙트럼 측정시 G 피크의 강도에 대한 D 피크의 강도의 비율이 2 이하인 것을 특징으로 하는 그래핀 적층체. - 제13항에 따른 그래핀 적층체를 포함한 투명전극.
- 제13항에 따른 그래핀 적층체를 포함한 전기소자.
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