Electrode

Details Electrode Electrode

1991-08-01

1994-12-06

Tung, T.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204196, 204197, G01N 2731, G01N 27401, C23F 1300

Patent

active

053707834

ABSTRACT:
An electrode is disclosed which is particularly useful as a reference electrode in cathodic protection systems. In any reference electrode or half cell, its continued stability is predominantly dependent on the metal ion concentration around it. In time such ions tend to leach away reducing the stability, effectiveness and life of the electrode. With the present invention such ions in the electrolyte may be replenished by the addition of a concentrated solution of metal salt to a ceramic canister which may include a glaze coating which may have one or more diffusion ports permitting the metal salt solution to leach at a controlled slow rate to the area surrounding the electrode ensuring continued stability and longer effective life for the electrode. The one or more diffusion ports also provide a low resistance current path to or from the lead within to the canister and the surrounding electrolyte.

REFERENCES:
patent: 2360244 (1944-10-01), McAnneny
patent: 2567855 (1951-09-01), Pippin et al.
patent: 3145158 (1964-08-01), Matsuyama
patent: 3192144 (1965-06-01), Heuze
patent: 3424664 (1969-01-01), Severinghaus
patent: 3438875 (1969-04-01), Watanabe et al.
patent: 3461051 (1969-08-01), Vrable
patent: 3787307 (1974-01-01), Schwab et al.
patent: 4166021 (1979-08-01), Ross et al.

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