Using seawater, electricity and carbon dioxide, a new carbon-negative building material has been developed that locks away CO2 permanently and turns it into valuable materials which can be used to manufacture concrete, cement, plaster and paint. The process to generate the carbon-negative materials also releases hydrogen gas—a clean fuel with various applications, including transportation.
news.northwestern.edu/stories/2025/03/new-carbon-negative-material-could-make-concrete-and-cement-more-sustainable/