✍ Scribed by Yuanyuan Dan; Haiyan Lu; Xiaolei Liu; Haibo Lin; Jingzhe Zhao
No coin nor oath required. For personal study only.
Composite deposition a b s t r a c t Ti/PbO 2 þ nano-Co 3 O 4 composite electrode materials with different compositions were prepared by anodic composite electrodeposition on Ti substrate, with a SnO 2 eSb 2 O 5 intermediate layer in Pb 2þ plating solution containing suspended nano-Co 3 O 4 particles. The composition, structure, and morphology of the composite materials were investigated by XRD, XPS, and SEM analyses. The composite electrodes were studied as anodes for oxygen evolution reaction (OER) in 1 mol/L NaOH solution. The activities for the OER of the composites were explained by recording linear scanning voltammograms and Tafel plots. Results indicate that the onset potential of oxygen evolution at the composite electrode was lowered by approximately 160 mV compared to the PbO 2 electrode without nano-Co 3 O 4 . The catalytic activity of the composite electrode towards OER was improved significantly.
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