Wisconsin Alumni Research Foundation

Rechargeable Desalination Battery

UW-Madison researchers have designed a rechargeable desalination cell that can achieve membrane-free desalination while simultaneously using salt ions to store and release energy, offering remarkable benefits over existing desalination technologies. The team has been able to achieve an energy recovery efficiency of more than 90% and has demonstrated that their desalination battery electrodes can operate with no loss in performance for more than 5,000 cycles: equivalent to 7 years of operation!

The technology is based on the patented discovery that bismuth can serve as a practical and efficient chloride-storage electrode, providing unique opportunities to develop novel approaches for both seawater desalination and wastewater treatment.

Principal Investigator: Kyoung-Shin Choi
Presented by: Margaret Lumley

For more information:


Kyoung-Shin Choi and her team
Technology summary and patent  Inventor profile: The worth of water Technology quick pitch


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