The　effects　of　reduction　agent　on　the　electrochemical　properties　of　Li3V2(PO4)(3)/C　positive　materials　were　studied.　An　one-step　solid-state　reaction　route　was　applied　to　synthesize　Li3V2(PO4)(3)/C　samples.　The　humic　acid,　glucose　and　carbon　were　used　as　reduction　agent.　SEM　images　show　that　the　particles　of　sample　with　humic　acid　as　reduction　agent　merge　with　each　other　and　form　a　porous　structure,　and　yet　the　particles　of　sample　synthesized　using　carbon　as　reduction　agent　are　wrapped　with　small　carbon　particles　and　separate　each　other.　Electrochemical　tests　show　that　the　samples　using　humic　acid　and　glucose　as　reduction　agents　have　better　cyclic　performance　than　the　one　using　carbon　as　reduction　agent.　At　the　200th　cycle,　the　sample　using　humic　acid　as　reduction　agent　still　keeps　145.2　mAh　g(-1)　at　1　C　charge　and　discharge　rates.　However,　the　sample　using　carbon　as　reduction　agent　shows　a　fast　decline　in　capacity　during　cycling　and　has　54.5%　capacity　loss　of　the　initial　value　after　200　cycles.　The　results　indicate　that　different　reduction　agents　can　obviously　affect　the　morphologies　and　electrochemical　properties　of　the　products.　(C)　2008　Elsevier　Ltd.　All　rights　reserved.