摘要：Transition metal phosphides(TMPs) are promising battery-type electrodes for hybrid supercapacitors(HSCs) due to their high electrical conductivity and electrochemical activity. Constructing TMPs with fast kinetics and stable structure is requisite to realize high-performance HSCs but remains a challenge. Herein, we incorporate Mo(or W)into Ni Co P to form Ni-Co-Mo-P(or Ni-Co-W-P) heterostructures with a unique three-dimensional(3 D) open morphology and modified electronic structure. Electrochemical analyses and density functional theory(DFT) calculations reveal that the incorporation of Mo/W enables Ni Co P with optimized nanostructure, high conductivity, abundant reaction active sites and enhanced reaction kinetics. As a result, the designed Ni-Co-Mo-P heterostructure delivers a high areal capacity of 4.08 C cm^(-2)(703 C g^(-1)) at 2 m A cm^(-2)and3.25 C cm^(-2) at 30 m A cm^(-2) with a good cycling stability, superior to those of Ni Co P and Ni-Co-W-P counterparts. The practical feasibility of the Ni-Co-Mo-P heterostructure is further demonstrated by an energy conversion and storage system consisting of commercial solar cell and Ni-Co-Mo-P//activated carbon(AC) device, which could obtain a high energy density of 53.3 W h kg^(-1)at a power density of 800 W kg^(-1).All-solid-state Ni-Co-Mo-P//AC device further illustrates the superior flexibility and makes a strong candidate for wearable energy storage electronics.