Electrochemical behavior of Pt nano-particles dispersed on Cu/Ni electrode in alkaline environment
Yükleniyor...
Dosyalar
Tarih
2024
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
The development of a low-cost Pt-based electrocatalyst for industrial water splitting is important. In this study, to prepare cost-efficient Pt-based electrocatalyst for hydrogen evolution, Cu electrode is deposited with nickel (Cu/Ni) and this surface is modified with Pt nanoparticles by electrodeposition method (Cu/Ni–Pt). The surface properties of the produced electrocatalysts are studied via X-ray diffraction (XRD), scanning electron spectroscopy (SEM), energy dispersive X-ray analysis (EDX), transmission electron microscopy (TEM) and atomic force microscopy (AFM). Characterizations demonstrated that the coating is homogeneous and compact. Hydrogen evolution and corrosion behaviors of prepared electrode (Cu/Ni–Pt) are examined in 1.0 M KOH solution using cyclic voltammetry (CV) and cathodic and anodic current-potential curves, electrochemical impedance spectroscopy (EIS). Tafel slope is determined to be 133 mV dec−1 on Cu/Ni–Pt. Very high exchange current density (5.65 mA cm−2) and very low charge transfer resistance (0.91 Ω cm2 at 1.05 V vs RHE) are measured again on this electrocatalyst. High activity is due to intrinsic activity of Pt and synergistic interaction of Pt and Ni. Besides, Cu/Ni–Pt exhibits so stable structure over 4 h without any current densities decay as well as showing good corrosion performance after long-term immersion times and these properties make it possible electrocatalyst with high corrosion resistant and activity in the water electrolysis systems.
Açıklama
Anahtar Kelimeler
Electrochemical properties, Hydrogen evolution reaction, Pt based electrocatalyst
Kaynak
International Journal of Hydrogen Energy
WoS Q Değeri
Scopus Q Değeri
N/A
Cilt
Sayı
Künye
Döşlü, S. T. and Döner, A. (2024). Electrochemical behavior of pt nano-particles dispersed on cu/ni electrode in alkaline environment. International Journal of Hydrogen Energy. https://doi.org/10.1016/j.ijhydene.2024.01.194
