Bipolar quasi-divided electrolysis cells

An electrolysis cell comprising a first and second monopolar electrode and one or more intermediate bipolar electrodes, wherein

• the first monopolar electrode and the parts of the intermediate bipolar electrode charged in the same sense as the first monopolar electrode together form a working electrode and the second monopolar electrode and the parts of the bipolar electrodes charged in the same sense as the second monopolar electrode together form a counter electrode,
• the space between the counter and working electrode is undivided,
• the surface of the counter electrode comprises electrochemically active and inactive parts,
• the sum of the electrochemically active parts of the surface of the counter electrode is significantly smaller than the sum of the electrochemically active parts of the surface of the working electrode, and
• wherein the working electrode is porous.