A Synthesis Method of MnO<sub>2</sub>/Activated Carbon Composite for Electrochemical Supercapacitors

W1871406294 · 수집 2026-10-04 18:12:17

T10660 Conducting polymers and applications

CoT 라벨링

라벨링 전

PDF 파일

저장된 PDF 없음

기본 정보

DOI 제목 발행년도 저널 URL 페이지 열기 PDF URL PDF 열기 발행기관 피인용수 라이선스

추가 정보 초록

In this paper, a MnO2/activated carbon (AC) composite with high electrochemical performance is synthesized through a novel synthesis method (Grafting Oxidation Method). The structure and morphology are analyzed using X-ray diffraction, Fourier transmission infrared spectra, scanning electron microscopy and transmission electron microscopy. Additionally, the electrochemical properties are evaluated through cyclic voltammetry, electrochemical impedance spectra and galvanostatic cycling measurements. The results demonstrate this MnO2/AC composite owes homogeneous particle size of nanometer dimension. The quasi-rectangular and symmetric cyclic voltammetry curves of the composite, which are measured under a three-electrode electrochemical system with a 0.5 mol L−1 Na2SO4 solution at room temperature, indicate it has an ability of rapidly reversible Faraday reaction and good electrochemical behavior. Compared to the MnO2/AC prepared through liquid-phase method, the composite prepared by grafting oxidation method exhibits a much higher specific capacitance which is up to 332.6 F g−1 at scanning rate of 2 mV s−1. A laboratory capacitor assembled with this MnO2/AC composite electrode shows an average capacitance attenuation rate of just 0.0068% after 2000 cycles. Besides, the impedance tests results show that the charge transfer resistance of this composite is 0.92 Ω, which is much lower than the composite (2.52 Ω) synthesized through liquid-phase method.

본문

PDF 본문 자동 추출 실패: [download] not a PDF (Content-Type: text/html, final URL: https://validate.perfdrive.com/fb803c746e9148689b3984a31fccd902/?ssa=a20114e2-c673-4b02-b9d6-87084d700da9&ssb=69821208405&ssc=https%3A%2F%2Fiopscience.iop.org%2Farticle%2F10.1149%2F2.0031509jes%2Fpdf&ssi=f18b5bae-cnvj-469f-9a25-5e4ab641f2fb&ssk=botmanager_support@radware.com&ssm=60615580567212371943862383234440&ssn=62a4844864ae92e0eb8350604b75a6df29410365ea35-1dfa-4a77-9c91c7&sso=64deff5b-51d081f0c9295666c1dc0588f946f28c2e7cb7cf961166f7&ssp=33778860881791177028179110130732643&ssq=02020391406472053815710984256949374804222&ssr=MjExLjE4OC41NS4xMTY=&sst=Mozilla/5.0%20(X11;%20Linux%20x86_64)%20AppleWebKit/537.36%20(KHTML,%20like%20Gecko)%20Chrome/126.0%20Safari/537.36%20ai4s-collector/1.0&ssu=&ssv=&ssw=&ssx=eyJfX3V6bWYiOiI3ZjkwMDAwMzY1ZWEzNS0xZGZhLTRhNzctOWY1Yi01MWQwODFmMGM5MjkxLTE3OTExMTA5ODQ3MjAzMDc5ODg5LTAwNTdjYTNjMGNkN2JiZTkyY2E5NCIsInV6bXgiOiI3ZmMwMDA4OTRmNTU4ZC1lNDlkLTQwZjgtYjI1Yi0xN2RkNzk3MjJmNzAxLTE3OTExMTA5ODQ3MjAzMDc5ODg5LT (2026-10-04 20:41:05)

활용가능성

이력 0건

아직 편집 이력이 없습니다. 저장할 때마다 이전 내용이 여기에 백업됩니다.