Fe-N4 Doped Carbon Nanotube Cathode Catalyst for PEM Fuel Cells.
Yinlong WuGuofeng LiangDi ChenZilong LiJinchang XuGuoju HuangMuzi YangHao ZhangJian ChenFangyan XieYanshuo JinNan WangShu-Hui SunHui MengPublished in: ACS applied materials & interfaces (2021)
The earth-abundant iron and nitrogen doped carbon (Fe-N-C) catalyst has great potential to substitute noble metal catalysts for oxygen reduction reaction (ORR) in H2-O2 proton exchange membrane fuel cells (PEMFCs). Herein, we report the preparation of Fe-N4 moiety doped carbon nanotubes (CNTs) by ball milling and two-step pyrolysis with dual metal-organic frameworks (MOFs) as the precursor. This catalyst shows high ORR catalytic performance and stability. Different from traditional inorganic iron sources, the MOF structure can effectively prevent the iron metal from aggregating during pyrolysis. In PEMFC, the catalyst shows high current density (0.39 A/cm2 at 0.7 V) and power density (850 mW/cm2). Such a method brings inspiration for the reasonable design of FeNC catalysts with high catalytic activity for H2-O2 PEMFCs.
Keyphrases
- metal organic framework
- carbon nanotubes
- induced apoptosis
- cell cycle arrest
- highly efficient
- iron deficiency
- oxidative stress
- sewage sludge
- gold nanoparticles
- drinking water
- mass spectrometry
- cell proliferation
- ionic liquid
- molecularly imprinted
- liquid chromatography
- aqueous solution
- carbon dioxide
- transition metal
- water soluble