Featuring surface sodium storage properties of confined MoS2/bacterial cellulose-derived carbon nanofibers anode

Porous graphene-like MoS2/carbon hierarchies for high-performance pseudocapacitive sodium storage

“…55,56 The oxidation peak at 0.42 V might be ascribed to the formation of Na x MoS 2 , and the peaks at 1.59, 1.85 and 2.14 V are related to the stepwise oxidation of Mo to MoS 2 . 42,56–58 From the second CV cycle onward, two reduction peaks appear at 1.50 and 0.73 V with good overlapping, confirming the high reversibility of MoS 2 /C100 upon cycling. For comparison, the CV curves of MoS 2 , MoS 2 /C50 and MoS 2 /C150 are also provided in Fig.…”

Flexible and Freestanding MoS2 Nanosheet/Carbon Nanotube/Cellulose Nanofibril Hybrid Aerogel Film for High-Performance All-Solid-State Supercapacitors

“…The characteristic peaks at 235.1 and 233.1 eV corresponded to Mo 6+ in a small amount of MoO 3 , and the characteristic peak at 229.9 eV corresponded to MO 5+ partially reduced by Mo 6+ (Figure e) . The characteristic peaks of S 2p at 161.7 and 163.2 eV corresponded to S 2p 3/2 of S 2– and S 2p 1/2 of S 2 2– , respectively (Figure f) . Furthermore, the conductivities of MoSCF1, MoSCF2 and MoSCF3 aerogel films are 0.38, 0.79, and 1.27 S cm –1 , respectively, which showed good conductivity (Figure S2d).…”

“… 41 The characteristic peaks of S 2p at 161.7 and 163.2 eV corresponded to S 2p 3/2 of S 2– and S 2p 1/2 of S 2 2– , respectively ( Figure 3 f). 42 Furthermore, the conductivities of MoSCF1, MoSCF2 and MoSCF3 aerogel films are 0.38, 0.79, and 1.27 S cm –1 , respectively, which showed good conductivity ( Figure S2d ).…”

MoS2/CN/Fe0.95S1.05 with a Hierarchical Architecture as a Long-Durable Anode for Sodium Ion Batteries

“…As shown in Figure a, there is a clear difference between the CV profiles of MoS 2 after 10 cycles (red line) and 100 cycles (green line). The four new peaks represent new redox reactions that belong to the metal-phase 1T-MoS 2 . Therefore, 2H-MoS 2 undergoes a phase transformation during charging and discharging, which forms the mixed-phase 2H–1T MoS 2 .…”

“…The four new peaks represent new redox reactions that belong to the metal-phase 1T-MoS 2 . 49 Therefore, 2H-MoS 2 undergoes a phase transformation during charging and discharging, which forms the mixed-phase 2H−1T MoS 2 . Benefitting from different coordinations between Mo and S atoms, metal-phase 1T-MoS 2 has stronger conductivity and higher theoretical specific capacity than semiconductor-phase 2H-MoS 2 , 50,51 and the redox peaks of Fe 0.95 S 1.05 are almost unchanged (Figure 6b), which proves that there is no phasetransformation process.…”