Fabrication and Electrochemical Treatment Application of A Novel Lead Dioxide Anode with Superhydrophobic Surfaces, High Oxygen Evolution Potential, and Oxidation Capability

2010 ◽  
Vol 44 (5) ◽  
pp. 1754-1759 ◽  
Author(s):  
Guohua Zhao ◽  
Yonggang Zhang ◽  
Yanzhu lei ◽  
Baoying Lv ◽  
Junxia Gao ◽  
...  

1959 ◽  
Vol 12 (2) ◽  
pp. 127 ◽  
Author(s):  
DFA Koch

The overpotential (n)-log current density (log i) curves for the evolution of oxygen at a lead dioxide anode in 2N H2SO4 both in the absence and presence of cobaltous sulphate in solution have been used to determine the electrode kinetic constants α ; i0 for a series of temperatures and also ΔH0*:. At 25 �C in the absence of cobalt α=O.59, i0= 10-11, and ΔH0*= 15 kcal mole-1 When 13 mg/l cobaltous sulphate is added α= 1.0, i0= 10-15, and ΔH0*:=29 kcal mole-1. Possible mechanisms for the reaction are discussed on the basis of these values and the rate determining steps suggested (where M represents the PbO2 surface) are M +H2O =MOH +H+ +e in the absence of cobalt and 2CoOH++ = 2Co++ +H2O + O in its presence.



2015 ◽  
Vol 162 (10) ◽  
pp. E258-E262 ◽  
Author(s):  
Yijing Xia ◽  
Qizhou Dai ◽  
Mili Weng ◽  
Yue Peng ◽  
Jinming Luo ◽  
...  


1989 ◽  
Vol 42 (9) ◽  
pp. 1527 ◽  
Author(s):  
TH Randle ◽  
AT Kuhn

Lead dioxide is a strong oxidizer in sulfuric acid, consequently electrochemical oxidation of solution species at a lead dioxide anode may occur by a two-step, C-E process (chemical oxidation of solution species by PbO2 followed by electrochemical regeneration of the reduced lead dioxide surface). The maximum rate of each step has been determined in sulfuric acid for specified lead dioxide surfaces and compared with the rates observed for the electrochemical oxidation of cerium(III) and manganese(II) on the same electrode surfaces. While the rate of electrochemical oxidation of a partially reduced PbO2 surface may be sufficient to support the observed rates of CeIII and MnII oxidation at the lead dioxide anode, the rate of chemical reaction between PbO2 and the reducing species is not. Hence it is concluded that the lead dioxide electrode functions as a simple, 'inert' electron-transfer agent during the electrochemical oxidation of CellI and MnII in sulfuric acid. In general, it will most probably be the rate of the chemical step which determines the feasibility or otherwise of the C-E mechanism.



1958 ◽  
Vol 105 (2) ◽  
pp. 100 ◽  
Author(s):  
J. C. Grigger ◽  
H. C. Miller ◽  
F. D. Loomis


2019 ◽  
Vol 31 (21) ◽  
pp. 1900062 ◽  
Author(s):  
Ying Liu ◽  
Chao Ma ◽  
Qinghua Zhang ◽  
Wei Wang ◽  
Pengfei Pan ◽  
...  


2019 ◽  
Vol 855 ◽  
pp. 113499
Author(s):  
Aqing Chen ◽  
Selvakumar V. Nair ◽  
Bojan Miljkovic ◽  
Harry E. Ruda ◽  
Zhenguo Ji




2019 ◽  
Vol 318 ◽  
pp. 809-819
Author(s):  
Ravi Sankannavar ◽  
K.C. Sandeep ◽  
Sachin Kamath ◽  
Akkihebbal K. Suresh ◽  
A. Sarkar


Nanoscale ◽  
2020 ◽  
Vol 12 (20) ◽  
pp. 11079-11087 ◽  
Author(s):  
Shenghua Ye ◽  
Yu Zhang ◽  
Wei Xiong ◽  
Tingting Xu ◽  
Peng Liao ◽  
...  

Low-crystalline Co3O4 porous nanosheet arrays (PNAs) with tetrahedral CoO4 vacancies, grown on carbon fiber cloth (CFC) (Co3−xO4−δ PNAs/CFC), were synthesized. This unique structure endows Co3−xO4−δ PNAs/CFC with improved activity for the oxygen evolution reaction.



Chemosphere ◽  
2021 ◽  
Vol 265 ◽  
pp. 129126
Author(s):  
Dan Guo ◽  
Yongbo Guo ◽  
Yixuan Huang ◽  
Yongyang Chen ◽  
Xiaochun Dong ◽  
...  


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