  We have measured thermoelectric properties of Ta2PdX6 (X=S, Se) around room
temperature using single crystal samples. We find that the power factor of
Ta2PdX6 is relatively high from middle-low to room temperatures, and notably
Ta2PdSe6 shows the largest power factor among thermoelectric materials with an
electrical conductivity of 10-2 {\Omega}cm at 300 K. Ta2PdS6 will be a possible
candidate for a Peltier cooling material if the lattice thermal conductivity is
reduced by chemical substitution.
