lead dioxide

[′led dī′äk‚sīd]

(inorganic chemistry)

PbO₂ Poisonous brown crystals that decompose when heated; insoluble in water and alcohol, soluble in glacial acetic acid; used as an oxidizing agent, in electrodes, batteries, matches, and explosives, as a textile mordant, in dye manufacture, and as an analytical reagent. Also known as anhydrous plumbic acid; brown lead oxide; lead peroxide.

Mentioned in

References in periodicals archive

At the positive plate, sulfate ions and hydrogen ions in the electrolyte, and the free electrons in solution, react with lead dioxide molecules, forming lead sulfate and releasing two water molecules into the electrolyte solution.

The result of these two reactions is an electron deficit (a positive charge) at the lead dioxide plate and an electron excess (a negative charge) at the lead plate.

INSIDE BATTERIES

Urynowicz, "Lead dioxide as an alternative catalyst to platinum in microbial fuel cells," Electrochemistry Communications, vol.

Hydrothermal synthesis of nanostructured manganese oxide as cathodic catalyst in a microbial fuel cell fed with leachate

Keywords: Lead dioxide anode, Electrodeposition, Chromium(III).

Electrolytic Oxidation of Cr (III) at Lead Dioxide

[12] Carr, J.P., and Hampson, N.A., 1972, "The Lead Dioxide Electrode," Chemical Reviews, 72, pp.

Synthesis and characterization of modified Ti/[alpha]-Pb[O.sub.2] nanoporous electrode as an active material on positive electrode

Keywords: Mixed lead dioxide, electro-catalytic activity, co-ions and n-butanol oxidation.

THE ANODIC BEHAVIOUR OF MIXED LEAD DIOXIDE ELECTRODES

Platinum -- lower than lead dioxide but higher than Ru and Ir oxides

Anodes for electrodeposition. (Technology Update)

The investigations suggest that the stability and activity of the lead dioxide anode is influenced by the presence of Ce+3 / Ce+4 ions in the lead dioxide electrodeposits.

ELECTROCHEMICAL BEHAVIOUR OF CERIUM OXIDE INCORPORATED LEAD DIOXIDE ELECTRODES ELECTRODEPOSITED FROM Ce+3 CONTAINING Pb++ ELECTROLYTES