Thirty　six　kinds　of　mixed　carbonate　molten　salts　were　prepared　by　mixing　potassium　carbonate,　lithium　carbonate,　sodium　carbonate　in　accordance　with　different　proportions.　The　data　of　melting　point,　decomposition　temperature,　specific　heat　are　measured　by　the　analysis　of　the　TGA　and　DSC　curves　of　36　kinds　of　salts,　which　show　that　melting　points　of　major　ternary　carbonate　are　close　at　around　400　degrees　C　and　decomposition　temperatures　of　most　ternary　carbonate　are　between　800　and　850　degrees　C.　Twleve　kinds　of　eutectic　molten　salts　with　low　melting　point　were　selected　among　36　kinds　of　salts.　The　correlations　of　the　eutectic　salts　between　specific　heat　and　temperature　were　obtained　by　fitting　the　experimental　data　of　specific　heat.　The　costs　for　sensible　heat　storage　of　12　kinds　of　carbonate　salts　are　obtained.　The　optimum　preparation　ratio　is　recommended　for　sensible　heat　storage.　(C)　2011　Elsevier　Ltd.　All　rights　reserved.