Types of Industrial Electrolyzers

Industrial electrolyzers can be divided, according to the manner in which the electrodes are connected and to the type of electrode, as follows  

Electrolyzers with double plate electrodes (open or closed). 

Electrolyzers with louvre type, lamellar, or perforated electrodes. 

Filter press electrolyzers with single plate electrodes. 

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There are essentially two types of industrial electrolyzers the unipolar (tank-type) electrolyzer and the bipolar (filter-press) type. Though there have been improvements in materials, in design, and in conversion efficiency (from about 70-75 percent in the 1970s to about 80-90 percent now, based on the higher heating value of hydrogen4), the basic concept has not changed in about 70 years. 

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