Stabilized PbO2 electrode prepared via crystal facet controlling for outstanding degradation of MePB

Effects of oxygen pressure on the morphology and surface energetics of β-PbO2: insight from DFT calculations

“…Recently, Chen et al proposed a preparation method to control the crystal facet of the PbO 2 electrode. 10 It was found that employing specific surfactants can promote the formation of the low-index (101) facet and limit the formation of the high-index (211) facet. The pyramidal shape of the crystallite was clearly observed, which is in good agreement with our predicted Wulff shape for the O-rich condition shown in Fig.…”

“…Electrodes made from b-PbO 2 have been extensively investigated owing to their high electrical conductivity, strong oxidizing ability, facile fabrication feasibility, electrochemical stability, and low cost of production. [7][8][9][10] These features draw much interest to PbO 2 electrodes, and thus, many studies on amending their performance have been reported. For instance, the effects of doping with rare-earth elements, including Co, 11 Ce, Er, Gd, and La, on the properties of PbO 2 electrodes were investigated.…”

“…The control of the crystal facet and particle shape is therefore as important as particle size and defect control. 15,16 For this reason, many investigations in various synthesis processes including electrochemical methods 17 and electrodeposition, 10,[18][19][20] which aim to increase the performance of PbO 2 electrodes and nanostructures through the control of crystal morphology and facet, have been carried out. In thermodynamic equilibrium, the crystal shape can be determined through the Wulff construction using the surface energies of all facets.…”

Carbon Microspheres Composite PbO2 Anode to Enhance Electrode Activity for Degradation of Isopropylantipyrine: Kinetics and Mechanism

“…Effect of pH.-The initial pH has a significant influence on the electrochemical reaction of the electrode surface, 62 and when the pH value changes, electrode surface charge and oxygen evolution potential also change. 63 The influence of pH value was evaluated by PRP degradation efficiency and COD removal efficiency and using H 2 SO 4 and NaOH adjusted the pH of the solution (original pH of 5.3), pH was selected for 3, 5, 7, 9, and 11. As shown in Figs.…”

Impact of Deposition Condition on the Morphology and Electrochemical Performance of Deposited F-Doped PbO2on Graphite Substrate in Primary PbO2-Zn Battery

“…9,10 The electrochemical characterization of the PbO 2 electrode depends on the morphology (active material network, active surface area, particle size, and compactness) and crystallite phase (α-PbO 2 or β-PbO 2 ) of formed film. [11][12][13] It has been recognized that the morphology and crystalline phase of the deposited PbO 2 is optimized by different factors such as the nature of the substrate, 14 electrodeposition technique, 15 and the deposition process conditions including the temperature, concentration, and additives in the acidic or alkaline electrolyte. 6,16,17 The PbO 2 electrodeposition is attained through diverse electrochemical techniques enclose chronopotentiometry, 18,19 chronoamperometry, 20,21 pulse current, 22,23 pulse reverse electrodeposition 24 and cyclic voltammetry (CV).…”