Fabrication, characterization and electrocatalytic application of a lead dioxide electrode with porous titanium substrate

α(β)-PbO2 doped with Co3O4 and CNT porous composite materials with enhanced electrocatalytic activity for zinc electrowinning

“…It is known that the active surface area is related to the voltammetric charge (q*), which was usually measured by CV technology. 15,35 It has been reported that the voltammetric charge (q*) consists of two parts: the outer voltammetric charge ðq * o Þ and the inner voltammetric charge ðq * i Þ: q * o can be calculated by the following equation:…”

“…[10][11][12][13][14] As is known, porous titanium is used as the electrode substrate material due to its good electrical conductivity, high surface area and excellent corrosion resistance. 15 Comparative studies of the PbO 2 electrode on the plate-like and porous Ti substrates were reported, and higher electrocatalytic performance was obtained. 16,17 A porous Ti/SnO 2 -Sb 2 O 3 -CNT/PbO 2 electrode was prepared by thermal decomposition and electrodeposition technology, in which PbO 2 coating covered the surface of porous Ti and formed a ne crystalline structure, possessing a longer service life.…”

Preparations and Performances Testing of α/β-PbO₂ Phase Compositions Prepared in Methanesulfonic Acid in Order to Provide More Appropriate Environmentally Sustainable Electrodes

“…Lead dioxide, as a kind of metal oxide electrode, is widely used owing to its low cost in contrast to those based on precious metals in process of traditional zinc electrowinning. [1][2][3][4] Such materials are relatively low in cost, which can also provide stable and robust structures for anodic oxidation at very positive potentials. [5][6][7][8] However, previous investigations and applications were limited to coatings formed on lead alloys, as well as anodes of this type always suffered greatly from continuous corrosion of the underlying lead substrate.…”

Desarrollo De Electrodos De Bajo Costo Basado en Óxidos Metálicos Para La Generación De Cloro

“…Los óxidos depositados fueron evaluados frente a la reacción de evolución de cloro por voltamperometría cíclica, y el tiempo de vida útil a pH neutro por cronopotenciometría. 12 , utilizando como catodo acero inoxidable, con una separación entre electrodos de 1 cm. La solución electrolítica empleada fue Pb(NO 3 ) 2 0,5 mol L -1 (>99,0 %, ACS reagent SIGMA-ALDRICH) y el pH se ajusto a 1 con HNO 3 (62-63%, pro analysis) 12 .…”