Investigation of hydrazine electrooxidation performance of carbon nanotube supported Pd monometallic direct hydrazine fuel cell anode catalysts

Authors : Ömer ER, Ali CAVAK, Adnan ALDEMİR, Hilal DEMİR KIVRAK

Pages : 90-98

Doi:10.51354/mjen.801182

View : 18 | Download : 11

Publication Date : 2020-12-21

Article Type : Research Paper

Abstract :In this study, carbon nanotube insert ignore into journalissuearticles values(CNT); supported Pd catalysts at varying Pd molar ratios are prepared via NaBH4 reduction method. Catalysts prepared for hydrazine electrooxidation are characterized via N2 adsorption-desorption measurements insert ignore into journalissuearticles values(BET);, X-ray photoelectron spectroscopy insert ignore into journalissuearticles values(XPS);, and transmission electron microscope insert ignore into journalissuearticles values(TEM);. Electrochemical measurements are performed using cyclic voltammetry insert ignore into journalissuearticles values(CV); and electrochemical impedance spectroscopy insert ignore into journalissuearticles values(EIS); techniques by CHI660E potentiostat in a three-electrode system. According to the characterization results, Pd/CNT catalysts are successfully synthesized. For 5% Pd/CNT catalyst, the average particle size and the surface area determined as 5.17 nm and 773.10 m2 g-1 via TEM and BET, respectively. Between the Pd containing insert ignore into journalissuearticles values(0.1-20 wt %); CNT supported catalysts prepared, 5% Pd / CNT catalyst shows the best current density as 6.81 mA cm-2 insert ignore into journalissuearticles values(1122.63 mA mg-1 Pd);. Furthermore, 5% Pd/CNT catalyst shows littlest charge transfer resistance insert ignore into journalissuearticles values(Rct); compared to Pd/CNT catalysts.
Keywords : Pd, carbon nanotube, hydrazine, electrooxidation, direct liquid fuel cells, anode, characterization