US 11,884,561 B2
Conversion materials for electrochemical removal of chloride-containing salts from water
Mordechai C. Kornbluth, Brighton, MA (US); Jonathan Mailoa, Cambridge, MA (US); Soo Kim, Cambridge, MA (US); Georgy Samsonidze, San Francisco, CA (US); Boris Kozinsky, Waban, MA (US); Saravanan Kuppan, Sunnyvale, CA (US); Sondra Hellstrom, East Palo Alto, CA (US); and Nathan Craig, Burlingame, CA (US)
Assigned to Robert Bosch GmbH, Stuttgart (DE)
Filed by Robert Bosch GmbH, Stuttgart (DE)
Filed on Oct. 8, 2019, as Appl. No. 16/595,674.
Claims priority of provisional application 62/749,091, filed on Oct. 22, 2018.
Prior Publication US 2020/0123029 A1, Apr. 23, 2020
Int. Cl. C25B 11/00 (2021.01); C02F 1/461 (2023.01); C02F 101/12 (2006.01); C02F 103/08 (2006.01)
CPC C02F 1/46109 (2013.01) [C02F 2001/46133 (2013.01); C02F 2101/12 (2013.01); C02F 2103/08 (2013.01)] 20 Claims
OG exemplary drawing
 
6. A device for removing chloride-containing salts from water, comprising:
a container configured to contain a saline water solution having a first concentration c1 of chloride ions;
a first electrode arranged in fluid communication with the saline water solution, the first electrode including a conversion material that is insoluble in the saline water solution, the conversion material having a composition that includes at least two or more of aluminum, chlorine, copper, iron, oxygen, and potassium, the composition variable over a range with respect to a quantity of chloride ions per formula unit; and
a power source configured to supply current to the first electrode so as to induce a reversible conversion reaction in which the conversion material (i) associates with the chloride ions in the saline water solution in a first operating state to generate a treated water solution having a second concentration c2 of the chloride ions and (ii) dissociates the chloride ions therefrom into the saline water solution in a second operating state to generate a wastewater solution having a third concentration c3 of the chloride ions where c3>c1>c2, wherein the conversion material is represented by the formula AlCuClx, where 0≤x≤4.