Iron　hydroxyl-phosphate　with　a　uniform　spherical　particle　size　of　around　1　μm,　a　compound　of　the　type　Fe2-yy(PO4)(OH)3-3y　(H2O)3y-2　(where　represents　a　vacancy),　has　been　synthesized　by　hydrothermal　methods.　The　particles　are　composed　of　spheres　of　diameter　-1　and　120　mAh　g-1　at　current　densities　of　170　mA　g-1　and　680　mA　g-1,　respectively.　The　stability　of　crystal　structure　of　this　material　was　studied　by　TGA　and　XRD　which　show　that　the　material　remains　stable　at　least　up　to　the　temperature　200　°C.　Investigation　of　the　electronic　structure　of　the　iron　hydroxyl-phosphate　by　GGA　+　U　calculation　has　indicated　that　it　has　a　better　electronic　conductivity　than　LiFePO4.　©　2010.