Electrochemical quartz crystal microbalance studies on the electropolymerization processes of ortho-phenylenediamine in sulfuric acid solutions

1998 ◽  
Vol 456 (1-2) ◽  
pp. 47-59 ◽  
Author(s):  
Hong-Ping Dai ◽  
Qi-Hui Wu ◽  
Shi-Gang Sun ◽  
Kwok-Keung Shiu
2007 ◽  
Vol 75 (4) ◽  
pp. 359-365 ◽  
Author(s):  
Yuu SUGAWARA ◽  
Amar Prasad YADAV ◽  
Atsushi NISHIKATA ◽  
Tooru TSURU

2020 ◽  
Vol 24 (11-12) ◽  
pp. 2733-2739
Author(s):  
Balázs Broda ◽  
György Inzelt

Abstract The charge-discharge characteristics and the aging mechanism of PbO2 layers doped with bismuth in contact with sulfuric acid solutions were studied by using combined cyclic voltammetry and electrochemical quartz crystal microbalance (EQCM) techniques. For this purpose, thick lead dioxide layers (non-doped and doped with Bi) were electrodeposited on gold substrate from aqueous solutions of Pb(NO3)2 dissolved in nitric acid and they were investigated in sulfuric acid media. Based on the electrochemical and the mass change responses, it is concluded that during the electrodeposition, bismuth influences the structure of the PbO2 formed. Bi(III) also inhibits the oxidation of lead sulfate and affects the reduction kinetics of lead dioxide. During successive cyclization (aging), the presence of bismuth accelerates the hydration of PbO2.


Sign in / Sign up

Export Citation Format

Share Document