Chlor-alkali cells configurations

Fig. 12.8. Chlor-alkali cell configurations (a) gap cell (b) zero gap cell (c) SPE cell.

The ohmic drop of the hardware depends on the nature of the materials used, and the intercell design configuration. These values have been found to be about 0.25 V for H-4 type diaphragm chlor-alkali cells, at a load of 150kA or 2.32 kA m . ... 

Bipolar cell configurations have been examined and are used in various electrochemical operations which include fuel cells [9,10], batteries [11-20], electrochemical capacitors [21], chlorate and chlor-alkali cells [22-27], electrowinning of metals [28-30], fused salt electrolysis of A1 and Mg [31-36], electrodialysis [37], and electroorganic processes [38]. 

The flow-through cathode is the result of a tailored-to-the-process evolution of the GDE structure, which is available also in two additional configurations double-sided (originally developed for fuel cell servicing) and single-sided (see Fig. 9.7). The double-sided type is particularly suited for the electrochemical process where the product should not be released on to the back surface of the cathode, as in the case of oxygen-depolarised chlor-alkali electrolysis, discussed in Section 9.3. 

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