ElectroCatalytic Activity of Nickel Foam with Co, Mo, and Ni Phosphide Nanostructures

Plasma

Joan Josep Roa Rovira¹  Morteza Saghafi Yazdi²  Mohammad Rezayat² 

[1] CIEFMA-Department of Materials Science and Engineering, Universitat Politècnica de Catalunya-BarcelonaTECH, 08019 Barcelona, Spain;Department of Materials Science and Engineering, Faculty of Engineering, Imam Khomeini International University, Qazvin 34149, Iran;

关键词: plasma heating;    electrocatalyst;    hydrothermal;    hydrogen evolution reaction;    oxygen evolution reaction;    nanostructure;   

DOI  :  10.3390/plasma5020017

来源: DOAJ

【 摘 要 】

In this study, the electrocatalytic activity of nickel foam, which is activated by cobalt, molybdenum, and nickel phosphide nanostructures, is prepared by the plasma hydrothermal method for use in the release of hydrogen and oxygen. The morphology and crystallographic structure of the synthesized phosphide specimens were examined by means of scanning electron microscopy, Fourier-transform infrared spectroscopy, and X-ray diffraction. Moreover, the electrolysis activity for these sets of specimens was investigated using the Tafel polarization curve or linear sweep voltammetry, cyclic voltammetry, as well as by means of the electrochemical impedance spectroscopy technique. Preliminary results show that nickel phosphide presents the highest electrocatalytic activity than the other phosphides developed in this research. In this regard, it presents an electrocatalytic activity to release hydrogen and oxygen of around −1.7 and 0.82 mV, which is measured at a current density of 100 mA·cm⁻², respectively.

【 授权许可】

Unknown