Single-phase　polycrystalline　CoSb3　skutterudite　thermoelectric　compounds　have　been　synthesized　by　spark　plasma　sintering　(SPS)　and　the　thermoelectric　properties　including　Seebeck　coefficient,　electrical　resistivity　and　thermal　conductivity　are　measured　from　room　temperature　to　800　K.　The　CoSb3　compound　with　relative　density　of　97.4%　and　grain　size　of　about　100　nm　is　achieved　under　the　sintering　condition　of　873　K　for　5　min,　and　a　maximum　thermoelectric　dimensionless　figure　of　merit　value　of　0.095　is　obtained　at　about　673　K.　(C)　2004　Elsevier　BY　All　rights　reserved.