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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2024.3
- 수록면
- 95 - 101 (7page)
- DOI
- https://doi.org/10.1007/s13391-023-00441-4
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초록· 키워드
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Exploration of highly effi cient non-noble metal oxygen reduction reaction (ORR) catalysts is essential for the widespreadindustrial utilization of fuel cells. Herein, we demonstrated a hierarchical porous catalyst (denoted as Fe-NC-Gs) using asimple stirring and one-step pyrolysis method. ZIF-8-derived N-doped carbon framework loaded on graphene oxide, on whichFe 3 O 4 and FeS nanoparticles are uniformly dispersed. In the composite nanostructure, a high surface area (470.58 m 2 g −1 )and hierarchical porous structure were observed. The obtained Fe-NC-G-2 exhibits superior ORR properties. The half-wavepotential (E 1/2 ) and the limiting current density in alkaline media were up to 0.85 V and − 5.39 mA cm −2 , respectively, comparableto the commercially available Pt/C. The four-electron-dominated process was exhibited in the ORR catalysis. It alsomanifests a better methanol tolerance and electrochemical stability during the chronoamperometry measurement in 0.1 MKOH. These results suggest that the proposed strategy provides a new pathway to construct effi cient electrocatalysts for ORR.
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