| 학회 |
한국공업화학회 |
| 학술대회 |
2015년 가을 (11/04 ~ 11/06, 제주국제컨벤션센터(ICCJEJU)) |
| 권호 |
19권 2호 |
| 발표분야 |
전기화학_포스터 |
| 제목 |
ZnOx/CeO2(x-y) Nano dots-decorated Carbon nanofibers as novel non-precious electro-catalyst for fuel cell application |
| 초록 |
Well-dispersed ZnO(x)CeO2(1-x) nanodots@ CNFs as anode catalysts for the electrooxidation of methanol were synthesized by an easy-controlled template-free method. Their structure and morphology were characterized by X-ray diffraction (XRD), high resolution transmission electron microscopy (HR-TEM), field-emission scanning electron microscopy (FESEM) equipped with rapid EDX (energy dispersive analysis of X-ray). The appealed characterization techniques specified that the obtained material is carbon nanofibers decorated by ZnO and CeO2 nanodots. The electrochemical oxidation of methanol on ZnO(x)CeO2(1-x) nanodots@CNFs modified glassy carbon electrode in alkaline solutions was systematically evaluated by cyclic voltammetry (CV) method. A detailed investigation is made for the electrocatalytic oxidation of methanol by varying methanol concentration. The corresponding current densities of ZnO(60%)CeO2(40%) nanodots@CNFs and ZnO(40%)CeO2(60%) nanodots@CNFs were 5.3 and 16.3 mA/cm2, respectively. Moreover, negative onset potential (−50 mV vs. Ag/AgCl) was observed when ZnO(40%)CeO2(60%) nanodots@CNFs were utilized, which is a superior value among the reported nano-precious electrocatalyst. These results suggested cheap and effective nanomaterials as non- precious catalyst for DMFCs application and pave the way to further improve the performance in energy and environmental applications. |
| 저자 |
김학용1, 박미라1, 박수진2, ghouri zafar khan1
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| 소속 |
1전북대, 2인하대 |
| 키워드 |
Carbon nanofibers; nanodots; electrospinning
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| E-Mail |
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