In this study,a step-by-step synthesis strategy was adopted to successfully construct three-dimensional hierarchical porous architectures by first epitaxially growing vertically oriented NiCoMo hydroxide nanosheet arr...In this study,a step-by-step synthesis strategy was adopted to successfully construct three-dimensional hierarchical porous architectures by first epitaxially growing vertically oriented NiCoMo hydroxide nanosheet arrays on Ti_(3)C_(2)T_(x) MXene substrates via a ligand-modulated hydrothermal method.The NiCoMoS–Ti_(3)C_(2)T_(x) heterostructures with strong interfacial coupling are then obtained through interface engineering optimization using a hydrothermal vulcanization process.Thanks to the synergistic advantages of the MXene substrate and the sulfide nanosheets,the NiCoMoS/Ti_(3)C_(2)T_(x) composite exhibits excellent electrochemical performance.According to tests,in a 1 M KOH electrolyte,the composite electrode can achieve a specific capacity of 1432 F g^(-1).The asymmetric supercapacitor NiCoMoS/Ti_(3)C_(2)T_(x)//AC assembled using the composite electrode can output an energy density of 45.5 W h kg^(-1)at a power density of 799.8 W kg^(-1),and its capacity can remain at 86.3%of the initial value after 5000 cycles,showing good performance and cycling stability.展开更多
文摘In this study,a step-by-step synthesis strategy was adopted to successfully construct three-dimensional hierarchical porous architectures by first epitaxially growing vertically oriented NiCoMo hydroxide nanosheet arrays on Ti_(3)C_(2)T_(x) MXene substrates via a ligand-modulated hydrothermal method.The NiCoMoS–Ti_(3)C_(2)T_(x) heterostructures with strong interfacial coupling are then obtained through interface engineering optimization using a hydrothermal vulcanization process.Thanks to the synergistic advantages of the MXene substrate and the sulfide nanosheets,the NiCoMoS/Ti_(3)C_(2)T_(x) composite exhibits excellent electrochemical performance.According to tests,in a 1 M KOH electrolyte,the composite electrode can achieve a specific capacity of 1432 F g^(-1).The asymmetric supercapacitor NiCoMoS/Ti_(3)C_(2)T_(x)//AC assembled using the composite electrode can output an energy density of 45.5 W h kg^(-1)at a power density of 799.8 W kg^(-1),and its capacity can remain at 86.3%of the initial value after 5000 cycles,showing good performance and cycling stability.
