Electrochemical water cleaning device

A desalination battery comprising:

• a plurality of desalination battery cells having a membrane electrode assembly including a first electrode compartment separated by an anion exchange membrane from a second electrode compartment, each of the first and second compartments configured to contain an intercalation host electrode;
• a first water stream compartment separated by the membrane electrode assembly from a second water stream compartment, each of the first and second water stream compartments configured to contain a saline water solution and arranged to be in respective fluid communication with the first and second electrode compartments, the first and second water stream compartments further configured to define a portion of a water flow field through the plurality of desalination battery cells;
• a power source configured to supply electric current to the intercalation host electrodes to release cations into the solution;
• and
• a controller programmed to adjust an amount of the electric current being supplied by the power source to change the flow of anions present in the saline water solution and passing through the anion exchange membrane between the first and second compartments.