Preparation and Electrocatalytic Property of PbO2-CeO2Nanocomposite Electrodes by Pulse Reverse Electrodeposition Methods
Source abstract
Abstract
PbO 2 -CeO 2 nanocomposite electrodes were prepared by pulse reverse electrodeposition in the lead nitrate solution containing CeO 2 nanoparticles. The effect of pulse reverse electrodeposition parameters, such as reverse pulse frequency, reverse peak current density and reverse duty cycle, on the content of CeO 2 nanoparticles in the PbO 2 -CeO 2 nanocomposite electrodes was investigated. The SEM and XRD tests show that PbO 2 -CeO 2 nanocomposite electrodes possess finer grain size than PbO 2 -CeO 2 nanocomposite electrodes (P) by pulse electrodeposition and PbO 2 -CeO 2 nanocomposite electrodes (D) by direct current electrodeposition. The service life of PbO 2 -CeO 2 nanocomposite electrodes can reach 285 h, which is 1.3 times longer than that of PbO 2 -CeO 2 electrodes (P), and 2.3 times longer than that of PbO 2 -CeO 2 electrodes (D). The electrochemical measurements show that PbO 2 -CeO 2 nanocomposite electrodes possess highest oxygen evolution overpotential and largest electrochemical active surface area among these electrodes. The electrocatalytic property of PbO 2 -CeO 2 nanocomposite electrodes was examined for the electrochemical degradation of methylene blue (MB). The bulk electrolysis shows that PbO 2 -CeO 2 nanocomposite electrodes exhibit the highest COD removal efficiency and lowest energy consumption, which can be ascribed to the highest oxygen evolution overpotential, largest electrochemical active surface area and highest CeO 2 content.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Electrocatalysts for Energy Conversion · Advanced battery technologies research · Electrochemical Analysis and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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