Sodium-air fuel cell for high energy density and low-cost electric power
This work demonstrates a new type of metal-air fuel cell utilizing liquid sodium metal, a solid electrolyte membrane, and humidified air, which delivers high energy density electricity while simultaneously using its discharge product to capture atmospheric carbon dioxide or as a valuable industrial chemical. Such fuel cells may allow utilization of sodium, the sixth most abundant element on Earth, as an energy carrier for applications in hard-to-decarbonize transportation and mobile electricity delivery.
