콘텐츠 본문
논문 해외 국제전문학술지(SCI급) Electrocatalytic Properties of Carbon Nanofiber Web-Supported Nanocrystalline Pt Catalyst as Applied to Direct Methanol Fuel Cell
- 학술지 구분 국제전문학술지(SCI급)
- 게재년월 2009-11
- 저자명 박정호
- 학술지명 INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
- 발행처명 ELECTROCHEMICAL SCIENCE GROUP
- 발행국가 해외
- 논문언어 외국어
- 전체저자수 9
논문 초록 (Abstract)
Carbon nanofibers (CNFs) web supported platinium nanoparticles were prepared by an electrochemical deposition method at sweeptimes of 5, 10, 20 and 40. Structure, composition and surface morphology of Pt incorporated CNF were analyzed by using X-ray diffraction (XRD), E nergy dispersive x-ray spectroscopy (EDX), Field emission scanning elect ron microscopy (FE-SEM) and High resolution transmission electron microscopy (HR-TEM) techniques. Structural analysis by XRD sh owed face centered cubic crystal structure of Pt. Particle size and loa ding level (wt%) of Pt were found to increase from 10.7 to 18.6 nm and 3 .3 to 7.0 6%, respectively with the increase of sweep times. SEM images showed that the Pt nano particles were agglomerated and effectively adhered on CNF with increase of sweep times. Nanocrystalline Pt and its FCC structure were also confirmed by using HR-TEM. Electrocataly tic activity of the nano Pt/CNF composite was demonstrated by li near voltammetrty, cyclic voltammetry and impedance spectra. The results showed increment in catalytic activity with the increase of sweep time.
