Bipolar separator plate for electrochemical cells

Details Bipolar separator plate for electrochemical cells Bipolar separator plate for electrochemical cells

1984-10-31

1985-08-06

Valentine, Donald R.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204282, C25B 904, C25B 1300

Patent

active

045334552

ABSTRACT:
Shunt currents which flow between the electrodes of adjacent cells through the moving conductive fluid and the fluid pool in the manifold of a bipolar cell assembly are minimized by introducing the conductive fluid at the top of an elongated outlet manifold. This results in cascaded flow which interrupts the current path. Shunt currents between the fluid manifold walls of the conductive bipolar elements in the series connected electrochemical cell assemblies are minimized by insulating the manifold walls with insulating, elastomeric sealing grommets. This prevents current flow between the manifold walls through the electrically conductive fluid in the manifold and provides an edgeseal between bipolar plates.
The instant invention relates to a process and apparatus for electrochemical cell assemblies and more particularly, for reducing shunt current in series connected bipolar assemblies.

REFERENCES:
patent: 3836448 (1974-09-01), Bouy et al.
patent: 4032424 (1977-06-01), Peters et al.
patent: 4069129 (1978-01-01), Sato et al.
patent: 4107023 (1978-10-01), Mentz et al.
patent: 4149952 (1979-04-01), Sato et al.
patent: 4191618 (1980-03-01), Coker et al.
patent: 4210512 (1980-07-01), Lawrance et al.
patent: 4247376 (1981-01-01), Dempsey et al.

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