Studies on deposition and dissolution processes of PbO[sub 2] in perchloric acid electrolytes

Journal Article · Mon Aug 01 04:00:00 EDT 1994 · Journal of the Electrochemical Society; (United States)

DOI:https://doi.org/10.1149/1.2055049· OSTI ID:6990771

Zhang, H; Park, S M ^[1]

---

1. Univ. of New Mexico, Albuquerque, NM (United States). Dept. of Chemistry

Electrochemical deposition and dissolution processes of PbO[sub 2] layers have been studied in 1M HClO[sub 4] solutions to investigate the effects of deposition potentials on the characteristics of the deposited layers. The results obtained from cyclic voltammetric, chronoamperometric, and chronopotentiometric experiments on the rotating ring-disk electrode indicate that the oxide layers have different electrochemical behavior when deposited at different potentials. The results are explained in terms of the nonstoichiometric nature of PbO[sub 2]. Results of spectroelectrochemical experiments indicate that PbO is produced as a long-lived intermediate species during the reduction of PbO[sub 2]. A reduction mechanism is proposed based on the relationship between the peak currents and potentials observed at the ring electrode while the PbO[sub 2] layer is reductively stripped at the disk electrode.

• OSTI ID: 6990771
• Journal Information: Journal of the Electrochemical Society; (United States), Journal Name: Journal of the Electrochemical Society; (United States) Vol. 141:8; ISSN JESOAN; ISSN 0013-4651
• Country of Publication: United States
• Language: English

Related Subjects

25 ENERGY STORAGE
250903* -- Energy Storage-- Batteries-- Materials
Components
& Auxiliaries
CHALCOGENIDES
CHEMICAL COATING
CHEMISTRY
COATINGS
DEPOSITION
DISSOLUTION
ELECTRIC BATTERIES
ELECTRIC POTENTIAL
ELECTROCHEMICAL CELLS
ELECTROCHEMICAL COATING
ELECTROCHEMISTRY
ELECTRODEPOSITED COATINGS
ELECTRODES
LEAD COMPOUNDS
LEAD OXIDES
LEAD-ACID BATTERIES
OXIDES
OXYGEN COMPOUNDS
PHASE STUDIES
SURFACE COATING
VOLTAMETRY