期刊
CHEMNANOMAT
卷 7, 期 3, 页码 307-313出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cnma.202000615
关键词
sustainable catalyst; oxygen reduction reaction; fuel cells; electrocatalysis; metal-free catalyst
资金
- M-ERA.NET project Wood-based Carbon Catalysts for Low-temperature Fuel Cells (WoBaCat)
- project Nanostructured Nitrogenated Carbon Materials as Promoters in Energy Harvesting and Storage Technologies (NN-CARMA) [LZP-2018/1-0194]
- ERA.Net RUS Plus funding mechanism (Project HeDoCat)
- European Regional Development Fund [TK134 EQUiTANT]
- Estonian Research Council [PSG312]
- ERDF [TK141]
A novel and sustainable method was developed to prepare nitrogen-doped graphene-like material from a renewable secondary raw material for potential application in oxygen reduction reaction catalysis. The N-doped wood char-based graphene-like material showed superior ORR activity in alkaline media compared to commercial nitrogen-doped graphene, indicating its potential as an alternative material in areas such as fuel cells and batteries.
A novel and sustainable method was established to prepare a nitrogen doped graphene-like material from a renewable, secondary raw material with potential application in the catalysis of oxygen reduction reaction (ORR). Alder wood char was used as a precursor material for producing a sustainable graphene-like carbon catalyst for the ORR. Alder wood char was first activated (AWC) and then doped with nitrogen (N-AWC). The graphene-like structure was confirmed using transmission electron microscopy (TEM) and Raman spectroscopy. Electrochemical characterization was carried out in 0.1 M KOH, showing that in alkaline media the ORR activity of the N-doped wood char-based graphene-like material is superior compared to non-sustainable commercial N-doped graphene. The onset potential of the ORR on N-AWC was shifted to positive direction by 75 mV in comparison to the commercially available nitrogen-doped graphene and the half-wave potential was shifted even by 239 mV. This renewable biomass-derived graphene-like carbon catalyst shows a great potential alternative to current synthetic graphite, graphene nanoplatelets and graphene materials in areas such as fuel cells and batteries.
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