Systems and methods for spraying and optimization of solid oxide fuel cell materials

Systems and methods for high-throughput fabrication and evaluation of electrode and electrolyte material performance for solid oxide fuel cells. A system comprising a substrate (106), an auto-sampler operable for simultaneously controlling the flow rates of 2 or more solid oxide fuel cell components, a delivery apparatus, a mass flow controller (124), an x-y motion stage (126), and a microprocessor operable for controlling the system. A method comprising providing a library of samples, continuously and controllable supplying desired amounts of the samples to a liquid chromatography system (102) where a multi-compositional mixture is formed, serially loading the multi-compositional mixture into a common sprayer, serially and distributively spraying the multi-compositional mixture onto a surface of a substrate (106), forming a discrete or continuous gradient array of the mixture reacted on the substrate (106), and evaluating the performance of the mixture for use in solid oxide fuel cells.