Developing　an　efficient　and　economic　synthetic　approach　to　massively　prepare　non-precious-metal　counter　electrode　(CE)　electrocatalysts　with　superior　catalytic　activity　and　electrochemical　stability　is　highly　desirable　for　the　commercialization　of　dye-sensitized　solar　cells　(DSSCs).　Herein,　a　unique　electrocatalytic　architecture　of　Co2P　and　Ni2P　nanoparticles　linked　and　semiexposed　at　the　end　points　of　nitrogen-doped　carbon　nanotubes　(MxP-NCNTs)　were　first　prepared　by　a　metal-catalyzed　graphitization-nitridization　driven　tip-growth　process　and　the　followed　phosphonation　and　carbothermal　reduction　reaction.　The　prepared　MxP-NCNTs　were　evaluated　as　CEs　in　DSSCs　and　showed　high　electrocatalytic　activity,　electrical　conductivity,　and　electrochemical　stability　for　triiodide　reduction.　The　DSSCs　assembled　with　Co2P-NCNTs　and　Ni2P-NCNTs　CEs　reached　a　high　power　conversion　efficiency　of　9.76%　and　9.21%,　respectively,　exceeding　the　efficiency　of　conventional　Pt-based　device　(7.84%).　The　extraordinary　DSSCs＇　performance　was　mainly　attributed　to　the　structural　advantages　of　MxP-NCNTs　CE,　in　which　the　open　porous　nanotube　arrays　and　integrated　heterointerfacial　connection　in　one-dimensional　nanostructure　of　MxP-NCNTs　accelerated　the　electron-ion　transport,　and　the　highly　dispersed　and　semiexposed　MxP　nanocrystals　improved　the　catalytic　activity　for　triiodide　reduction.　This　work　provides　a　avenue　to　exploring　highly　effective　and　robust　non-precious-metal　CE　electrocatalysts　for　DSSCs.　©　2021　American　Chemical　Society.