The hydrogen generation from alkaline NaBH_4 solution by using electroplated amorphous Co-Ni-P film catalysts

摘要

The amorphous Co-Ni-P films were electroplating on Cu sheets. The effects of NiSO_4 concentrations on the deposit plating rate and the catalytic activities for NaBH_4 hydrolysis were investigated. The surface morphology and phase structure of the deposited Co-Ni-P films were characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD) analysis. The composition was analyzed by energy dispersive spectrometer (EDX). Experimental results showed that adding NiSO_4 in Co-P bath could increase the deposition rate. When 0.01 M of NiSO_4 was used, the highest deposition rate and the highest hydrogen generation rate of 3636mL(ming-catalyst)~(-1) were obtained. The activation energy (E_a) for the NaBH_4 hydrolysis was 38 kJ mol~(-1), which was comparable to the value of noble metal catalysts.