Metal organic framework derived hollow NiS@C with S-vacancies to boost high-performance supercapacitors

Synthesis of P-doped NiS as an electrode material for supercapacitors with enhanced rate capability and cycling stability

“…6d), the top of the valence band maximum (VBM) shifted up when the P–Ni bonds existed, indicating that P-NiS possesses higher conductivity than the original NiS due to the narrower band gap. 52 The theoretical calculation results were consistent with the conductivity and EIS results, further confirming that bulk phosphorus doping was an effective strategy to improve the conductivity of NiS, thus making P-NiS a more promising SC electrode candidate.…”

Facile-Synthesized Ni-Metal–Organic Framework/Nano Carbon Electrode Material for High-Performance Supercapacitors

“…In addition, the area and shape of the CV curve in Figure 5b has transparent enlargement with the increasing potential window. Therefore, the ASC can work stably without outgoing polarization at 1.7 V. 27,28 As shown in Figure 5c, the good rate performance and charge/discharge performance of the ASC are revealed by the visible redox peaks at a high sweep rate of 100 mV/s. The specific capacitance of the ASC is calculated according to Figure 5d, which is 59.4 (1 A/g), 38.8 (3 A/g), 28.2 (5 A/g), and 16.5 F/g (10 A/g), respectively.…”

Sulfur Vacancies‐Engineered Ni3S4‐x Hollow Microspheres with Optimized Anionic Adsorption Energy for High‐Performance Supercapacitor

“…Besides, the poor‐rate properties and inferior cycling ability of nickel sulfides caused by poor electrical conductivity and serious volume vibration are limiting its further development. [ 7–9 ] Thus, designing and developing simple and feasible tactics to obtain pure Ni 3 S 4 materials with significant electrochemical performance is critical but challenging.…”