As a kind of semiconductor with wide band gaps, MnS has received wide attention for supercapacitors. However, its electrochemical performance is often unsatisfactory. A practical solution to the poor energy density of supercapacitors is the rational design of heterostructure electrode materials. Here, a MnS-supported NiCo-LDH (MnS/NiCo-LDH) composite electrode was prepared using a convenient two-step electrodeposition technique and its electrochemical behavior was analyzed. The NiCo-LDH material was tightly adhered to the MnS nanoparticle substrate, expanding the reaction species and decreasing the thicknesses of NiCo-LDH. As a growth basis for NiCo-LDH, rough MnS is more conducive to the compact growth of NiCo-LDH. Benefiting from the porous channels in the three-dimensional net-like nanostructure, the MnS/NiCo-LDH composite electrode exhibits a high capacitance of 2022 F g⁻¹ at 1 A g⁻¹ and good cycling stability (78.0% remaining over 2000 cycles). Moreover, an asymmetric supercapacitor (ASC) assembled with MnS/NiCo-LDH and activated carbon achieves an energy density of 78.67 W h kg⁻¹ at 804.8 W kg⁻¹, and the device still retains 94.0% of its initial capacitance after 5000 cycles. The superb electrochemical performance benefits from the synergistic effect between MnS nanoparticles and NiCo-LDH nanosheets as well as its unusual porous structure. The attained results suggest that the well-designed MnS/NiCo-LDH electrode has great potential to meet the requirements for advanced energy storage devices.

SHPB simulation of TC4/2024AL/TC4, TC4/TA2/TC4, and TC4/Al3Ti/TC4 laminated composites under different impact velocities of strike bar was carried out by ANSYS/LS-DYNA. Then stress distribution of the laminated composites under impact loading was theoretically analyzed according to the one-dimensional stress wave theory. Influencing factors of stress distribution and energy attenuation were emphatically analyzed, including impact velocities of the strike bar, wave impedance of interlayer, and plastic deformation. The results show that, when the impact velocity is determined, impact resistance is negatively correlated with the impedance of the interlayer. Under certain conditions, impact resistance is negatively correlated with impedance of interlayer, and positively correlated with impact velocity. In addition, the accumulation of plastic deformation could make residual stress distribution along the position coordinate axis shows a trend of gradual increase from both sides to the middle position.