New solid electrolytes based on urea and thiourea have been synthesized. Th
eir ionic conductivity detected by electronic conductivity instrument is hi
gher than 6.84 x 10(-3) S . cm(-1) at room temperature. The main factors in
fluencing the ionic conductivity are analyzed. These are amorphous solid so
lution. The thiourea changes to ammonium thiocyanate, which can ionize and
conduct in the solid electrolyte.