Synthesis and characterization of Co, Zn, Mn, V modified Pd formic acid fuel cell anode catalysts

Caglar, Aykut; Ulaş, Berdan; Cogenli, Mehmed Selim; Bayrakçeken, Ayşe; Kivrak, Hilal

doi:10.1016/j.jelechem.2019.113402

Makale Tam Makale Uluslararası 2019 Açık erişimli

Synthesis and characterization of Co, Zn, Mn, V modified Pd formic acid fuel cell anode catalysts

Aykut Caglar, Berdan Ulaş, Mehmed Selim Cogenli, Ayşe Bayrakçeken, Hilal Kivrak

JOURNAL OF ELECTROANALYTICAL CHEMISTRY Cilt 850 · 01.10.2019

DOI ile aç

Özet

In this study, carbon nanotube (CNT) supported Pd50Co50, Pd50V50, Pd50Mn50, and Pd50Zn50 bimetallic catalysts are prepared by using sodium borohydride (NaBH4) reduction method to investigate their formic acid electrooxidation (FAEO) activities. These catalysts are characterized by using X-ray Diffraction (XRD), Transmission Electron Microscopy (TEM), Inductively Coupled Plasma-Optical Emission Spectrometer (ICP-OES), and X-ray Photoelectron Spectroscopy (XPS). The XRD results show that the electronic state of catalysts varied by second metal addition to Pd. TEM results reveal that Pd and Co are homogeneously distributed. The result of Pd43Co57/CNT obtained by ICP-OES analysis of Pd50Co50/CNT catalyst shows that the synthesis was successfully synthesized. XPS results of Pd50Co50/CNT and Pd50Zn50/CNT catalysts showed that Pd, Zn, and Co atoms used in the preparation of the catalysts were obtained mainly in their elemental state. In addition, FAEO activity and stability of these catalysts are examined by using cyclic voltammetry (CV) and chronoamperometry (CA). Pd50Co50/CNT indicated the highest specific and mass activities with 6.89 mA/cm(2) and 649.69 mA/mg Pd, respectively. Direct formic acid fuel cell (DFAFC) performances are performed in different temperatures for Pd50Co50/CNT catalyst. The specific current for DFAFC performance of this catalyst was evaluated as 5.71, 6.87, and 2.43 mA/cm(2) at 18 degrees C, 30 degrees C, and 60 degrees C cell temperature at 0.5 V, respectively. (C) 2019 Elsevier B.V. All rights reserved.

Anahtar kelimeler

PERFORMANCE nanoparticles CARBON NANOTUBES DEHYDROGENATION Co PD EFFICIENT ELECTROCATALYST ELECTROCATALYTIC ACTIVITY Zn Mn HIGHLY EFFICIENT Formic acid electrooxidation NaBH4 reduction METHANOL ELECTROOXIDATION V STABLE NANOCATALYST OXIDATION REACTION

Atıf için künye

Caglar, A., Ulaş, B., Cogenli, M. S., Bayrakçeken, A., & Kivrak, H. (2019). Synthesis and characterization of Co, Zn, Mn, V modified Pd formic acid fuel cell anode catalysts. JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 850. https://doi.org/10.1016/j.jelechem.2019.113402

BibTeX

@article{caglar2019-187522,
  author = {Caglar, Aykut and Ulaş, Berdan and Cogenli, Mehmed Selim and Bayrakçeken, Ayşe and Kivrak, Hilal},
  title = {Synthesis and characterization of Co, Zn, Mn, V modified Pd formic acid fuel cell anode catalysts},
  journal = {JOURNAL OF ELECTROANALYTICAL CHEMISTRY},
  year = {2019},
  volume = {850},
  issn = {1572-6657},
  doi = {10.1016/j.jelechem.2019.113402},
  url = {https://akademik.atauni.edu.tr/yayinlar/187522-synthesis-and-characterization-of-co-zn-mn-v-modified-pd-formic-acid-fuel-cell}
}