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Phased charging and discharging in capacitive desalination

United States Patent

9,758,392
September 12, 2017
View the Complete Patent at the US Patent & Trademark Office
Lawrence Livermore National Laboratory - Visit the Industrial Partnerships Office Website
A system combines complete, ultra-thin cells into a monolithic and robust framework necessary for desalination applications which yields orders of magnitude faster desalination. The electrode pairs are located so that a flow of feed water flows through or around the electrode pairs with the flow perpendicular to sequentially applied electric potentials. The system is controlled to charge the series of electrode pairs sequentially or phased. That means the charging of the second electrode pair is delayed with regard to the charging of the first electrode pair and the charging of a third electrode pair is delayed with respect to the charging of the second electrode pair.
Stadermann; Michael (Pleasanton, CA), Qu; Yatian (Stanford, CA), Santiago; Juan G. (Stanford, CA), Hemmatifar; Ali (Stanford, CA)
Lawrence Livermore National Security, LLC (Livermore, CA), The Board of Trustees of the Leland Stanford Junior University (Stanford, CA)
14/ 951,180
20170144902
November 24, 2015
STATEMENT AS TO RIGHTS TO APPLICATIONS MADE UNDER FEDERALLY SPONSORED RESEARCH AND DEVELOPMENT This invention was made with government support under Contract No. DE-AC52-07NA27344 awarded by the Department of Energy. The Government has certain rights in this invention.