Cobalt　antimonide,　CoSb3,　has　been　prepared　by　vacuum　melting　and　ball-milling.　The　electrochemical　cycling　behaviors　of　CoSb3　were　evaluated　using　lithium　anode　model　cell　Li　vertical　bar　LiPF6　(EC+DMC)vertical　bar　CoSb3.　The　reversible　capacities　of　CoSb3　intermetallic　electrode　reached　570　and　290　mAh　g(-1),　respectively　for　the　first　cycle　and　the　twentieth　cycle.　It　was　demonstrated　that　cycle　stability　of　CoSb3　could　be　largely　improved　by　milling　after　mixing　with　mesocarbon　microbeads.　There　were　50.9%　and　77.5%　retention　of　the　initial　capacity　at　the　twentieth　cycle,　respectively　for　CoSb3　and　CoSb3-MCMB　hybrid.　(C)　2005　Elsevier　B.V.　All　rights　reserved.