PtNi supported on binary metal oxides: Potential bifunctional electrocatalysts for low-temperature fuel cells?

Martins, M.; Sljukic, B.; Sequeira, C. A. C.; Soylu, G. S. P.; Bayrakçeken, Ayşe; Bozkurt, G.; Sener, T.; Santos, D. M. F.

doi:10.1016/j.apsusc.2017.09.132

Makale Tam Makale Uluslararası 2018 Açık erişimli

PtNi supported on binary metal oxides: Potential bifunctional electrocatalysts for low-temperature fuel cells?

M. Martins, B. Sljukic, C. A. C. Sequeira, G. S. P. Soylu, Ayşe Bayrakçeken, G. Bozkurt, T. Sener, D. M. F. Santos

APPLIED SURFACE SCIENCE Cilt 428 · ss. 31–40 · 01.01.2018

DOI ile aç

Özet

PtNi nanoparticles (NPs) were synthesised by microwave irradiation technique and supported onto Mn2O3 and two binary metal oxides, Mn2O3-TiO2 and Mn2O3-NiO, prepared by solid-state dispersion method. TEM analysis revealed formation of PtNi NPs of 2-3 nm diameter on the metal oxides. Their activity for oxygen reduction reaction (ORR) and borohydride oxidation reaction (BOR) in alkaline media was studied using voltammetric, amperometric and electrochemical impedance spectroscopy techniques. The effect of electrolyte composition and operation temperature on the catalysts performance was also examined. ORR and BOR kinetic parameters, namely Tafel slope, kinetic current density, order of reaction and activation energy were evaluated, enabling direct comparison of the three electrocatalysts performance. The results show that PtNi NPs anchored on binary metal oxide supports possess superior activity for BOR in alkaline media, suggesting their potential application as anodes in low-temperature fuel cells. (C) 2017 Elsevier B.V. All rights reserved.

Anahtar kelimeler

PERFORMANCE oxidation Reduced graphene oxide NI catalysts ELECTRODE Oxygen reduction reaction Borohydride oxidation reaction ALKALINE MEDIA LOW-COST Binary metal oxides PtNi nanoparticles Low-temperature fuel cells SODIUM-BOROHYDRIDE ELECTROOXIDATION

Atıf için künye

Martins, M., Sljukic, B., Sequeira, C. A. C., Soylu, G. S. P., Bayrakçeken, A., Bozkurt, G., Sener, T., & Santos, D. M. F. (2018). PtNi supported on binary metal oxides: Potential bifunctional electrocatalysts for low-temperature fuel cells? APPLIED SURFACE SCIENCE, 428, 31–40. https://doi.org/10.1016/j.apsusc.2017.09.132

BibTeX

@article{martins2018-187546,
  author = {Martins, M. and Sljukic, B. and Sequeira, C. A. C. and Soylu, G. S. P. and Bayrakçeken, Ayşe and Bozkurt, G. and Sener, T. and Santos, D. M. F.},
  title = {PtNi supported on binary metal oxides: Potential bifunctional electrocatalysts for low-temperature fuel cells?},
  journal = {APPLIED SURFACE SCIENCE},
  year = {2018},
  volume = {428},
  pages = {31--40},
  issn = {0169-4332},
  doi = {10.1016/j.apsusc.2017.09.132},
  url = {https://akademik.atauni.edu.tr/yayinlar/187546-ptni-supported-on-binary-metal-oxides-potential-bifunctional-electrocatalysts}
}