A　novel　phosphazene　groups　modified　sulfur　composites　cathode　[triphosphazene　sulfide　composite　(PS)　or　nitroaniline-triphosphazene　disulfide　composite　(NPS)]　which　can　give　good　affinity　with　electrolytes　was　prepared.　Their　chemical　structures　were　identified　by　FTIR　and　XRD　analysis.　SEM　analysis　showed　PS　and　NPS　had　a　denser　and　rougher　surface　structure　than　elemental　sulfur,　with　many　tiny　pores　on　the　surface.　Contact　angles　measurement　showed　that　PS　had　a　hydrophilic　surface,　which　exhibited　better　affinity　of　ether　solvent.　When　used　as　a　cathode　material　in　lithium-sulfur　batteries,　its　initial　discharge　capacity　was　1,109　mAh/g　for　NPS,　784　mAh/g　for　PS.　Discharge　capacity　of　NPS　was　higher　than　charge　capacity,　which　implied　nitroanilino　base　on　sulfur　particles　involving　in　generation　of　polysulfides.　©　2013　Springer-Verlag　Berlin　Heidelberg.