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- Title
Ionic Liquids as Precursors for Efficient Mesoporous Iron-Nitrogen-Doped Oxygen Reduction Electrocatalysts.
- Authors
Li, Zelong; Li, Jinlei; Xia, Chungu; Li, Fuwei; Li, Guanglan; Jiang, Luhua; Sun, Gongquan
- Abstract
A ferrocene-based ionic liquid (Fe-IL) is used as a metal-containing feedstock with a nitrogen-enriched ionic liquid (N-IL) as a compatible nitrogen content modulator to prepare a novel type of non-precious-metal-nitrogen-carbon (M-N-C) catalysts, which feature ordered mesoporous structure consisting of uniform iron oxide nanoparticles embedded into N-enriched carbons. The catalyst Fe10@NOMC exhibits comparable catalytic activity but superior long-term stability to 20 wt % Pt/C for ORR with four-electron transfer pathway under alkaline conditions. Such outstanding catalytic performance is ascribed to the populated Fe (Fe3O4) and N (N2) active sites with synergetic chemical coupling as well as the ordered mesoporous structure and high surface area endowed by both the versatile precursors and the synthetic strategy, which also open new avenues for the development of M-N-C catalytic materials.
- Subjects
HETEROGENEOUS catalysis kinetics; IONIC liquids; OXYGEN reduction; IRON oxide nanoparticles; ELECTRON-transfer catalysis; MESOPOROUS silica; X-ray diffraction
- Publication
Angewandte Chemie International Edition, 2015, Vol 54, Issue 5, p1494
- ISSN
1433-7851
- Publication type
Article
- DOI
10.1002/anie.201409579