KR20170058561A - 내재적 미세기공성 고분자를 이용한 다공성 탄소구조체 및 이를 포함하는 전지용 전극 - Google Patents
내재적 미세기공성 고분자를 이용한 다공성 탄소구조체 및 이를 포함하는 전지용 전극 Download PDFInfo
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- 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
- H01M4/587—Carbonaceous material, e.g. graphite-intercalation compounds or CFx for inserting or intercalating light metals
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Y02E60/12—
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
Description
도 2는 본 발명의 일 구현예에 따른 내재적 미세기공성 고분자 막의 치밀한 막 단면과 비용매 유도 상분리법으로 제조된 내재적 미세기공성 고분자 막의 단면을 나타낸 주사전자현미경(SEM) 사진이다.
도 3은 본원 발명의 일 실시예에 따라 비용매 유도 상분리법으로 제조된 내재적 미세기공성 고분자 막을 탄화시켜 제조된 전극의 표면과 단면의 주사전자현미경(SEM) 사진이다.
도 4는 본원 발명의 일 실시예에 따른 혼합용매에서 테트라하이드로퓨란(THF)의 함량에 따른 비용매 유도 상분리법으로 제조된 내재적 미세기공성 고분자 막을 탄화시켜 제조된 전극의 표면 변화를 나타낸 주사전자현미경(SEM) 사진이다.
도 5는 본원 발명의 일 실시예에 다른 비용매 유도 상분리법으로 제조된 내재적 미세기공성 고분자 막을 탄화시켜 제조된 전극의 BET 측정결과를 나타낸 그래프이다.
도 6은 본원 발명의 일 실시예에 따른 비용매 유도 상분리법으로 제조된 내재적 미세기공성 고분자 막을 탄화시켜 제조된 전극과 탄화된 치밀한 구조를 보이는 전극의 CV 측정결과를 나타낸 그래프이다.
도 7은 본원 발명의 일 실시예에 따른 비용매 유도 상분리법으로 제조된 내재적 미세기공성 고분자 막을 탄화시켜 제조된 전극의 주사속도에 따른 CV 측정결과를 나타낸 그래프이다.
도 8은 본원 발명의 일 실시예에 따른 THF 함량에 따른 비용매 유도 상분리법으로 제조된 내재적 미세기공성 고분자 막을 탄화시켜 제조된 전극의 CV 측정결과를 나타낸 그래프이다.
고분자1 | 고분자2 | 고분자3 | 고분자4 | 고분자5 | 고분자6 | 고분자7 | 고분자8 | 고분자9 | 고분자10 |
X1+Y1 | X1+Y2 | X1+Y3 | X2+Y1 | X2+Y2 | X3+Y2 | X1+Y4 | X4+Y4 | X1+Y5 | X4+Y5 |
고분자11 | 고분자12 | 고분자13 | 고분자14 | 고분자15 |
X1+Y6 | X1+Y7 | X1+Y8 | X1+Y9 | X1+Y10 |
Surface area (m2/g) |
Pore volume (cm3/g) |
Total volume in pore (cm3/g) |
Micropore size (nm) |
|
cNPIM-0 (dense) |
2086.7 | 0.75 | 0.78 | 0.72 |
cNPIM-7 (carbonization-80%) |
2101.1 | 0.72 | 0.9 | 0.75 |
Claims (10)
- 내재적 미세기공성 고분자를 양용매(good solvent)에 용해시키는 고분자 균일용액 제조단계;
상기 고분자 균일용액으로부터 비용매 유도 상분리법(non-solvent induced phase separation)을 통하여 다공성 구조를 형성하는 다공성 구조체 형성단계; 및
상기 다공성 구조체를 탄화시키는 탄화단계를 포함하는 것을 특징으로 하는 다공성 탄소 구조체의 제조방법. - 청구항 1에 있어서,
상기 다공성 구조체 형성단계는 고분자 균일용액을 비용매와 접촉시키는 비용매 접촉단계를 포함하는 것을 특징으로 하는 다공성 탄소 구조체의 제조방법. - 청구항 1에 있어서,
상기 다공성 구조체 형성단계는 고분자 균일용액을 이용하여 전구체를 제조하는 전구체 제조단계 및 상기 전구체를 비용매와 접촉시키는 비용매 접촉단계를 포함하는 것을 특징으로 하는 다공성 탄소 구조체의 제조방법. - 청구항 1에 있어서,
상기 양용매(good solvent) 및 비용매(non-solvent)는 단일용매 또는 혼합용매인 것을 특징으로 하는 다공성 탄소 구조체의 제조방법. - 청구항 3에 있어서,
상기 전구체는 양용매가 모두 제거되지 않은 젤-형태(gel-like)의 입자, 섬유, 필름 또는 3차원 형상 중 어느 하나인 것을 특징으로 하는 다공성 탄소 구조체의 제조방법. - 청구항 1에 있어서,
상기 다공성 구조체는 단면에 비대칭성 매크로 기공(asymmetric macro-pore) 구조를 포함하는 것을 특징으로 하는 다공성 탄소 구조체의 제조방법. - 청구항 1 내지 청구항 6 중 어느 한 항의 제조방법으로 제조되어,
단면에 비대칭성 매크로 기공(asymmetric macro-pore) 구조, 내재적 미세기공성 고분자가 탄화되면서 형성된 메조 기공(meso-pore) 구조 및 내재적 미세기공(intrinsic micro-pore) 구조를 포함하는 것을 특징으로 하는 다공성 탄소 구조체. - 청구항 7에 기재된 상기 다공성 탄소 구조체를 포함하는 것을 특징으로 하는 전지용 전극.
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