New electrochemical process to recycle CO2

Read the Gas World article By Molly Burgess 9 May 2019

Research scientists at Dioxide Materials in Boca Raton, Florida have developed a novel electrochemical technology that converts carbon dioxide (CO2), water and renewable energy to produce green fuels and chemicals to enable a low carbon future.

The technology can be used to convert COinto many products, meeting numerous customer needs. Currently, the main industrial-scale use of carbon monoxide (CO) is in synthesis gas, a mixture of CO and hydrogen (H2), which is currently produced from natural gas or coal.

The Dioxide Materials team has developed two new materials that enable its new process. Novel Sustainion® anion exchange membranes, that are both alkali stable and have at least twice the ionic conductivity of the nearest competitor, and the Sustainion® additives in the catalyst layer which lower the overpotential of the reaction, raising the reaction selectivity to great than 95%, allowing the electrolysers to operate at commercial current densities of 200 mA/cmand higher.

Dioxide Materials’ economically viable process develops a series of new membrane catalysts that raise the selectivity of COconversion to CO to over 95% and increases the overall energy efficiency to over 80%. Lowering the amount of electricity needed to produce a tonne of product by a factor of 2-3. 

Dioxide Materials’ electrolysers can also enable industries to reduce COemissions to comply with carbon regulations to establish ‘green’ credibility while addressing environmental concerns.

“Another key advantage of our technology is that it is easy to scale-up, making modular units that can be interconnected to achieve the desired output while enabling low-capex production of carbon-neutral chemicals and fuels,” said Jerry Kaczur, Senior Engineer at Dioxide Materials.

“When scaled, Dioxide Materials’ electrolysers will be able to use hundreds of MW of electricity at one time, and because they can be turned on/off depending on when renewable energy sources produce more energy than the grid can use, they can help offset some of the renewable energy that would otherwise be curtailed,” said Rich Masel, PhD, CEO and Founder of Dioxide Materials.

The technology has been successfully tested by a number of Fortune 500 companies, fermenters and universities.