[논문]전기방사를 이용한 슈퍼캐퍼시터용 금속산화물/탄소나노섬유 복합체

양갑승; 김보혜

doi:10.14478/ace.2015.1065

전기방사를 이용한 슈퍼캐퍼시터용 금속산화물/탄소나노섬유 복합체
Electrospun Metal Oxide/Carbon Nanofiber Composite Electrode for Supercapacitor Application 원문보기

공업화학 = Applied chemistry for engineering, v.26 no.3, 2015년, pp.239 - 246

양갑승 (전남대학교 고분자융합소재공학부) , 김보혜 (대구대학교 과학교육학부 화학교육전공)

초록
AI-Helper

나노 탄소재료를 복합화하면 기존 재료의 특성을 유지하면서 그 효율을 극대화할 수 있다. 여기에 이종원소를 부가하면 전기화학적인 특성이 디자인되므로, 나노 탄소재료의 복합화를 통해 한 종류의 나노 재료로부터 여러 강점을 얻을 수 있다. 특히 탄소나노섬유와 금속산화물을 복합화하면 탄소나노섬유의 전기이중층 뿐만 아니라 금속산화물의 산화 환원 반응을 이용하여 비축전 용량, 고율 특성, 수명 특성이 향상되고 높은 수준의 출력밀도가 유지되는 고용량 슈퍼 캐퍼시터용 전극 소재를 개발할 수 있다. 본 총설에서는 탄소의 고출력특성과 금속산화물의 고에너지 특성이 동시에 발현되는 금속산화물계 탄소나노섬유복합체의 제법과 응용에 대한 최신연구를 다루도록 하겠다.

Abstract ▼ AI-Helper

The hybridization of carbon nano-materials enhances the efficiency of each function of the resulting structure or composites. Also, the addition of non-carbon elements to nanomaterials modifies the electrochemical properties. Electrodes combining porous carbon nanofibers (CNFs) and metal oxides benefit from the combination of the double-layer capacitance of the CNFs and the pseudocapacitive character associated with the surface redox-type reactions. Consequently, they demonstrate superior supercapacitor performance in terms of high capacitance, high energy/power efficiency and high rate capability. This paper presents a comprehensive review of the latest advances made in the development and application of various metal oxide/CNF composites (CNFCs) to supercapacitor electrodes.

주제어

AI 본문요약
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가설 설정

The Ru-CNF obtained from electrospinning had a higher EDLC and PC than those obtained with other methods. This method provides a synergistic effect that enhances the characteristics of EDLC and PC due to the following two reasons: (i) The expansion of the pore diameter promotes the characteristics of EDLC. The pores were enlarged because of the discharge of the metal precursor during the stabilization and carbonation-activation process.

제안 방법

The NFs were activated at 800 ℃ by supplying steam in a nitrogen carrier gas. The activated samples were termed ACNF, Zn(20)-ACNF, and Zn(10)-ACNF, with a zinc acetate to PAN concentration ratio of 0, 10, and 20 wt%, respectively. The electrochemical performance of the ZnO/ACNF composite electrodes is compared to that of pure ACNF electrodes in aqueous KOH as the electrolyte.

대상 데이터

reported the preparation of V₂O₅/CNFCs from PAN/V₂O₅ in DMF by a simple electrospinning method, and their electrochemical properties as supercapacitor electrodes were investigated[63-64]. The carbonized samples were identified as CNF, V₂O₅-5, V₂O₅-10, and V₂O₅-20, indicating concentrations of 0, 5, 10, and 20% V₂O₅ relative to PAN, respectively. Figure 4a shows a scanning electron microscopy (SEM) image of V₂O₅-20.

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저장형식	Text(ASCII format) Excel format RefWorks Direct Export RIS format (for Reference Manager, ProCite, EndNote), Scholar's Aids, Mendeley
메일정보	받는사람 (필수) @ 보내는사람 (선택) @ 제목 내용 KISTI 검색결과 이메일 서비스
안내	총 건의 자료가 검색되었습니다. 다운받으실 자료의 인덱스를 입력하세요. (1-10,000) 검색결과의 순서대로 최대 10,000건 까지 다운로드가 가능합니다. 데이타가 많을 경우 속도가 느려질 수 있습니다.(최대 2~3분 소요) 다운로드 파일은 UTF-8 형태로 저장됩니다. 파일의 내용이 제대로 보이지 않을실 때는 웹브라우저 상단의 보기 -> 인코딩 -> 자동선택 여부를 확인하십시오. ~ Text(ASCII format) Excel format

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