Energy　consumption　associated　with　the　catalysts　contributes　partly　to　the　high　ohmic　resistance　arising　from　the　low　conductivity　of　the　catalyst　and　poor　charge　transfer　between　nanoparticles,　which　has　been　difficult　to　study　due　to　the　complicated　nanostructured　framework　of　the　catalysts.　We　constructed　a　novel　heterostructure　electrocatalyst　(MoS2/MoP@NC)　composed　of　nanosized　MoS2/MoP　heterostructures　anchoring　on　hierarchical　N-doped　carbon　for　smoothing　electron　transfer　in　boosting　hydrogen　evolution　reaction　(HER).　With　the　merits　of　large　surface　area,　rapid　charge　transfer,　and　optimized　electronic　structure　induced　by　charge　transfer　across　the　sufficient　interface,　the　optimal　MoS2/MoP@NC　(MoSP)　catalyst　shows　a　competitive　overpotential　of　140　(0.5　M　H2SO4),　76　(1.0　M　KOH),　and　103　mV　(0.5　M　NaCl　&1.0　M　KOH)　at　10　mA　cm−2,　respectively.　Raman　experiment　and　Density　functional　theory　(DFT)　calculations　reveal　the　formation　of　Mo-S-Mo　bonds　between　MoS2　and　MoP,　which　favor　enhancing　the　Femi　level　to　facilitate　the　electron　transfer,　therefore　regulating　the　electronic　structure　for　the　optimization　of　adsorption　energy　of　hydrogen　intermediate.　Based　on　the　experimental　results,　we　constructed　an　energy　consumption　model　of　catalysts,　where　energy　consumption　comes　from　three　aspects.　The　heterostructure　design　decreases　the　energy　consumption　of　the　catalysts　greatly　compared　to　the　single-phase　Mo-based　catalyst　of　MoS2　(78.0%)　and　MoP　(45.2%)　in　alkaline　electrolytes.　©　2024　The　Authors