The　MnO-coated　Li3V2(PO4)(3)/C　(LVP/C)　cathode　material　was　successfully　synthesized　by　a　sol-gel　method.　The　nanolayer　structure　of　MnO　coating　on　the　surface　of　LVP/C　is　demonstrated　by　the　transmission　electron　microscopy　(TEM)　and　X-ray　photoelectron　spectroscopy　(XPS)　etc.　It　indicates　that　the　manganese　oxide　in　the　coating　layer　appears　in　the　form　of　MnO.　The　MnO　coating　prevents　the　preferential　growth　of　LVP　at　the　(1　2　0)　crystal　plane.　The　key　function　of　MnO　modification　is　to　improve　the　structure　of　SEI　film.　The　as-prepared　4%　MnO-coated　LVP/C　has　the　best　electrochemical　behavior.　The　MnO　coating　greatly　enhances　the　stability　of　the　SEI　structure　and　Li+　ion　conductivity,　and　reduces　the　electrode　polarization,　so　the　as-prepared　4%　MnO-coated　LVP/C　has　excellent　rate　capability　and　cycle　performance.　Its　apparent　Li+　diffusion　coefficient　(D-Li(+))　reaches　4.0　x　10(-9)　cm(2)　s(-1).　In　the　range　of　3.0-43　V,　its　specific　capacities　are　121.4　and　108.4　mAh　g(-1)　in　the　1st　and　300th　cycles　at　10C　rate,　respectively.　Its　capacity　retention　reaches　89.3%,　but　it　is　only　75.6%　for　LVP/C　without　MnO　coating.　(C)　2014　Elsevier　B.V.　All　rights　reserved.