Transition　metal　selenides　with　porous　structure　have　a　brightly　prospects　due　to　their　low　cost,　large　surface　area,　high　catalytic　efficiency,　and　facile　synthetic　method　comparing　with　Pt-based　electrocatalytic　materials　in　power　transformation　systems.　Herein,　we　have　successfully　prepared　porous　structure　transition　metal　sele-nide　CoSe2/NiSe2/MoSe2　nanospheres　through　simple　solvothermal　method　and　stepwise　selenization　process　from　glycerol　precursor　nanospheres.　Uniform　selenide　nanoparticles　were　formed　on　the　surface　of　the　porous　nanospheres.　The　resultant　CoSe2/NiSe2/MoSe2　porous　nanospheres　not　only　provided　more　redox　pairs,　but　also　had　better　electron　transfer　performance　and　shorter　charge　transfer　distance　between　the　electrolyte　and　the　electrode　materials,　accelerating　the　charge　transfer　process.　Therefore,　CoSe2/NiSe2/MoSe2　nanospheres　delivered　excellent　electrochemical　performance　in　dye-sensitized　solar　cells　which　achieved　an　excellent　power　conversion　efficiency　of　9.49%　comparing　to　the　cell　based　on　Pt　(8.28%).　This　work　can　offer　a　new　vision　on　the　design　of　high-performance,　environment-friendly,　and　Pt-free　electrocatalysts　for　solar　cells.