Control system and apparatus for Redox type electrochemical cell

Details Control system and apparatus for Redox type electrochemical cell Control system and apparatus for Redox type electrochemical cell

1976-04-14

1977-09-13

Mack, John H.

Chemistry: electrical current producing apparatus, product, and

With pressure equalizing means for liquid immersion operation

H01M 818, H01M 804

Patent

active

040483843

ABSTRACT:
The invention concerns the regulation of an electrochemical system of the Redox type. It consists in immersing three electrodes in a stream to or from a cell in the said Redox system. Two of the electrodes, referred to as measuring electrodes, are connected by two resistors defining a junction point therebetween. A direct current is applied across these electrodes. The potential of the other electrode, called the reference electrode, is compared with the potential of said junction point. The ratio between the resistors is determined so that the potentials of the said junction point and of the said reference electrode is equal, this being so for a determined power supplied by the said electrochemical system. Variation of the potential are used to regulate the flow of fuel and/or of oxidizing agent to the said electrochemical system. The invention is more particularly implemented in fuel cells using the Redox system containing anthraquinone 2-7 sodium disulphonate. The invention also includes the cells, preferably fuel cells, embodying the aforesaid apparatus.

REFERENCES:
patent: 3540934 (1970-11-01), Boeke
patent: 3849201 (1974-11-01), Kordesch

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