One‐Pot Synthesis of Tunable Crystalline Ni3S4@Amorphous MoS2 Core/Shell Nanospheres for High‐Performance Supercapacitors

摘要: Transition metal sulfides gain much attention as electrode materials for supercapacitors due to their rich redox chemistry and high electrical conductivity. Designing hierarchical nanostructures is an efficient approach fully utilize merits of each component. In this work, amorphous MoS2 firstly demonstrated show specific capacitance 1.6 times that the crystalline counterpart. Then, core@amorphous shell (Ni3S4@MoS2) prepared by a facile one-pot process. The diameter core thickness can be independently tuned. Taking advantages flexible protection conductive core, Ni3S4@amorphous nanospheres are tested supercapacitor electrodes, which exhibit 1440.9 F g−1 at 2 A good retention 90.7% after 3000 cycles 10 g−1. This design architecture may open up new strategies synthesizing promising supercapacitors.