TY - JOUR
T1 - Electrospun bamboo-like Fe 3 C encapsulated Fe-Si-N co-doped nanofibers for efficient oxygen reduction
AU - Li, Zhefu
AU - Chen, Binling
AU - Wang, Xianfeng
AU - Nie, Jun
AU - Ma, Guiping
N1 - Publisher Copyright:
© 2019 Elsevier Inc.
PY - 2019/6/15
Y1 - 2019/6/15
N2 - In this work, a novel catalyst of oxygen reduction reaction (ORR) was designed and fabricated by electrospinning, photo-curing and carbonization, based on polymer poly(dimethylsilylene ethynylenephenyleneethynylene) (PMSEPE) and metal organic frameworks (MOFs)—Materiaux de l'Institute Lavosier-101(Fe) (MIL-101(Fe)). The optimal catalyst PMSEPE/MIL-101(Fe)-800, which was carbonized at 800 °C, presented a bamboo-like nanofiber structure with a high degree of graphitization, a high specific surface area (302.3 m 2 /g) and a high yield (64.17%). Fe 3 C particles were found to be encapsulated into the Fe-Si-N co-doped carbon nanofibers. In the electrochemical tests, PMSEPE/MIL-101(Fe)-800 showed an onset potential of 0.935 V (vs. RHE) and a diffusion limit current of 6.01 mA/cm 2 (vs. RHE) in 0.1 M KOH aqueous solution, of which performances are competitive to commercial 20 wt% Pt/C. PMSEPE/MIL-101(Fe)-800 also exhibited a higher methanol tolerance and duration stability. Further Zn-air battery test used by PMSEPE/MIL-101(Fe)-800 suggested its potential for the application of fuel cell.
AB - In this work, a novel catalyst of oxygen reduction reaction (ORR) was designed and fabricated by electrospinning, photo-curing and carbonization, based on polymer poly(dimethylsilylene ethynylenephenyleneethynylene) (PMSEPE) and metal organic frameworks (MOFs)—Materiaux de l'Institute Lavosier-101(Fe) (MIL-101(Fe)). The optimal catalyst PMSEPE/MIL-101(Fe)-800, which was carbonized at 800 °C, presented a bamboo-like nanofiber structure with a high degree of graphitization, a high specific surface area (302.3 m 2 /g) and a high yield (64.17%). Fe 3 C particles were found to be encapsulated into the Fe-Si-N co-doped carbon nanofibers. In the electrochemical tests, PMSEPE/MIL-101(Fe)-800 showed an onset potential of 0.935 V (vs. RHE) and a diffusion limit current of 6.01 mA/cm 2 (vs. RHE) in 0.1 M KOH aqueous solution, of which performances are competitive to commercial 20 wt% Pt/C. PMSEPE/MIL-101(Fe)-800 also exhibited a higher methanol tolerance and duration stability. Further Zn-air battery test used by PMSEPE/MIL-101(Fe)-800 suggested its potential for the application of fuel cell.
KW - Bamboo-like structure
KW - Electrospinning
KW - Electrospun fibers
KW - Oxygen reduction reaction
UR - http://www.scopus.com/inward/record.url?scp=85063298804&partnerID=8YFLogxK
U2 - 10.1016/j.jcis.2019.03.079
DO - 10.1016/j.jcis.2019.03.079
M3 - Article
C2 - 30925431
AN - SCOPUS:85063298804
SN - 0021-9797
VL - 546
SP - 231
EP - 239
JO - Journal of Colloid and Interface Science
JF - Journal of Colloid and Interface Science
ER -
