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Palladium-ytterbium (Pd-Yb) bimetallic catalysts with different Pd/Yb ratios supported on carbon black (20%Pd-x%Yb/C, x = 0, 1, 5, 10, and 15) were prepared by a sodium borohydride reduction method. The 20%Pd-5%Yb/C catalyst exhibited the best electrocatalytic activity towards methanol oxidation in alkaline media. The improved electrocatalytic activity and stability of 20%Pd-5%Yb/C can be explained...
Unsatisfactory sensing selectivity remains a challenging issue for zirconia-based gas sensors and severely restrains their wide application. In view of the response selectivity for the amperometric sensor can be simply controlled by the applied bias voltage, we proposed the following strategy: operating the sensor at various bias voltage and disparate response patterns is expected; through processing...
LiNi0.05Mn1.95O4 powders were prepared by manganese tetraoxide (MTO) and electrolytic manganese dioxide (EMD). The phase identification, surface morphology, and electrochemical properties of the prepared powders were studied by X-ray diffraction, scanning electron microscopy, cyclic voltammetry, and galvanostatic charge–discharge experiments. Compared to LiNi0.05Mn1.95O4 powders prepared by EMD, LiNi...
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