PbO₂ modified with TiO₂-NTs composite materials with enhanced OER electrocatalytic activity for Zn electrowinning

Abstract

The high oxygen evolution overpotential of the Pb–Ag anode is one of the main reasons for the high energy consumption in Zn electrowinning.

Electrochemical Impedance Characteristics of a Low-Temperature Single Cell for CO2/H2O Co-Reduction to Produce Syngas (CO+H2)

“…Then, the experimentally observed low-frequency semicircle, which is separated from the highfrequency semicircle by approximately two orders, would be the overlapped signal of the cathodic mass transport and the oxygen evolution reaction (OER) in anodes. The apparent characteristic frequencies for the low-frequency semicircles ranged between 3.36 and 70.7 Hz in the present work, which are similar to the reported CO 2 reduction mass transport [43] and OER [49][50][51]. Accordingly, the equivalent circuit for the CO 2 /H 2 O co-reduction single cell was determined, as shown in Fig.…”

A review: research progress on the formation mechanism of porous anodic oxides

“…23,28,54,69,88,[109][110][111][112][113] These metals can be prepared by anodization to form films with regular nanotube arrays which have shown wide application potential in a wide variety fields such as sensors, supercapacitors, and photocatalysis. 111,[114][115][116][117][118][119][120][121][122][123][124][125][126] Because of its simple and efficient preparation process and low cost, it also has a good prospect in future industrial production. Therefore, further research on the mechanism is of great significance to the preparation of nanoporous materials with precise structures.…”

Micro-area investigation on electrochemical performance improvement with Co and Mn doping in PbO2 electrode materials

“…Despite the virtues mentioned above, there is huge room for improvement in terms of the electrochemical reactivity of the PbO 2 electrode. Researchers have modied and rened PbO 2 electrodes by inserting ions, 1,2 doping with active and inert particles, 3,4 and changing the structure of PbO 2 . [5][6][7] As a result, the electrochemical reactivity of the PbO 2 electrode is enhanced and the application range of the PbO 2 electrode is expanded.…”