A polymeric synthesis route to Ce1-xBixO2-x/2 solid electrolytes is proposed for alternating conventional high-temperature solid-state reactions. This synthesis route is based on a modified Pechini process, which allows the polymerization of precursors at 300-500 degreesC. Ce1-xBixO2-x/2 derived from citrate gels crystallizes in cubic fluorite-type structures and shows solid solution properties with Bi-doping content ranging from x = 0.1 to 0.4. The nanoparticle size (similar to 30 nm) of Ce1-xBixO2-x/2 allows better sintering into highly ceramic pellets at 900 degreesC. The highest ionic conductivity for the x = 0.3 composition at 600 degreesC was 1.42 x 10(-2) S(.)cm(-1) with E-a = 0.95 eV.