Toward electrochemical synthesis of cement-An electrolyzer-based process for decarbonating CaCO while producing useful gas streams.

Cement production is currently the largest single industrial emitter of CO, accounting for ∼8% (2.8 Gtons/y) of global CO emissions. Deep decarbonization of cement manufacturing will require remediation of both the CO emissions due to the decomposition of CaCO to CaO and that due to combustion of fossil fuels (primarily coal) in calcining (∼900 °C) and sintering (∼1,450 °C).