Journal
CHEMCATCHEM
Volume 12, Issue 18, Pages 4568-4581Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cctc.202000658
Keywords
Carbon nanofibers; Electrospinning; Anion exchange membrane fuel cells; Non-precious metal catalyst; Oxygen reduction
Categories
Funding
- Estonian Research Council [PRG723]
- Estonian Ministry of Education and Research [IUT34-14]
- EU through the European Regional Development Fund [TK141, TK134]
- IUF
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Electrospun polyacrylonitrile (PAN) based carbon nanofibres (CNF) are employed as cathode catalysts in anion-exchange membrane fuel cell (AEMFC) for the first time. The catalysts are preparedviapyrolysis of Co or Fe salt-containing PAN fibre with and without the ionic liquid (IL) additive. The catalyst material preparation is optimised by assessing the oxygen reduction reaction (ORR) activity of different transition metal and nitrogen-doped CNFs in 0.1 M KOH by rotating disc electrode method followed by testing in real AEMFC configuration. The best performance in the AEMFC is observed in case of Fe and IL containing PAN fibre that was pyrolysed at 1000 degrees C and additionally treated in an acid solution (Fe/IL-PAN-A1000). In the AEMFC, the Fe/IL-PAN-A1000 catalyst showed the maximum power density (P-max) of 289 mW cm(-2), which is 82 % of theP(max)obtained with commercial Pt/C cathode catalyst (352 mW cm(-2)).
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