Revolutionary Electrochemical Technologies for 


And Wastewater Treatment by ChloBis Water, Inc.


Hello! We are ChloBis Water, Inc.  

Our technology is based on our team's patented discovery that bismuth (Bi) can serve as a practical and efficient Cl-storage electrode.


The use of Bi as a Cl-storage electrode enables the construction of multiple desalination devices, including a desalination battery and a Cl-specific removal and recovery device.


Our sheet-type ion-storage electrodes demonstrate exceptional structural stability and can be used as the anode or cathode in electrochemical systems to achieve remarkable lifetimes.



Desalination batttery.png


Like conventional batteries, the desalination battery stores and releases energy during the charging and discharging processes, but in the desalination battery, the energy storage and release processes are coupled with the removal and release of Na and Cl, enabling energy-efficient, membrane-free desalination.

Ion Removal and Recovery

The Bi-based desalination battery can also be used for Cl-specific removal and recovery from municipal and industrial
wastewater. The Na-storage electrode can be replaced with other electrodes to enable Cl-specific removal from a variety of feedwater types. The removed Cl can be recovered and valorized to produce Cl-containing chemicals.

Aqueous Energy Storage

Our aqueous rechargeable Na-ion battery system uses seawater as the electrolyte to simultaneously perform seawater desalination and store and release energy, enabling a dual-purpose energy-storage system. Our new system offers unique advantages to increase the viability of aqueous energy storage systems.

our history


Demonstration of a bismuth-based electrodialysis cell

Electrochemical desalination using Bi/BiOCl electrodialysis cells

Do-Hwan Nam, Kyoung-Shin Choi,

ACS Sustainable Chemistry & Engineering, 2018, 6, 15455-15462.


Redox couple-based electrochemical desalination system

Tandem desalination/salination strategies enabling the use of redox couples for efficient and sustainable electrochemical desalination

Do-Hwan Nam, Kyoung-Shin Choi,

ACS Applied Materials & Interfaces, 2019, 11, 38641-38647.


Demonstration of Cl-specific removal and valorization

Electrochemical and photoelectrochemical approaches for the selective removal, recovery, and valorization of chloride ions

Do-Hwan Nam, Dongho Lee, Kyoung-Shin Choi

Chemical Engineering Journal, 2021, 404, 126378.


ChloBis Water, Inc. was founded


First demonstration of bismuth as Cl-storage material

Bismuth as a new chloride-storage electrode enabling the construction of a practical high capacity desalination battery

Do-Hwan Nam, Kyoung-Shin Choi,

Journal of the American Chemical Society, 2017, 139, 11055-11063.


Membrane-free bismuth-based desalination battery

A desalination battery combining Cu3[Fe(CN)6]2 as a Na-storage electrode and Bi as a Cl-storage electrode enabling membrane-free desalination

Do-Hwan Nam, Margaret, A. Lumley, Kyoung-Shin Choi,

Chemistry of Materials, 2019, 31, 1460-1468.


Patent granted: Bismuth as Cl-storage material 

Bismuth-based chloride-storage electrodes

Kyoung-Shin Choi, Do-Hwan Nam,

US 10,414,674 B2 (09/17/2019)


Aqueous energy storage system

A seawater battery with desalination capabilities enabling a dual-purpose energy storage system, 

Do-Hwan Nam, Margaret, A. Lumley, Kyoung-Shin Choi,

Energy Storage Materials, 2021, 37, 556-566.

Abstract Water

Who supports us

Our technology is only possible because of research funding and municipal and industrial supporters.

Their support enables us to develop creative and innovative electrochemical systems to make an impact on challenges at the intersection of the water-energy nexus. If you are interested in becoming a supporter, we encourage you to contact us directly.


"We've just taken the first step

toward creating an innovation

that will change the world."

Come join us and

support ChloBis Water, Inc.

Thank you.