Interlayer expanded MoS 2 enabled by edge effect of graphene nanoribbons for high performance lithium and sodium ion batteries

Interlayer Nanoarchitectonics of Two‐Dimensional Transition‐Metal Dichalcogenides Nanosheets for Energy Storage and Conversion Applications

“…Such sandwiched MoX 2 :C superstructures have been a hotspot for applications as high-performance electrodes in LIBs, [70,76,81,102,[106][107][108]119] SIBs [111,114] and MIBs. [120,121] The approaches for synthesizing sandwiched MX 2 :C superstructure typically include (i) exfoliation/restacking method by incorporating graphenes or organic molecules that can be easily carbonized upon annealing, [70,121] (ii) hydrothermal/ solvothermal methods with addition of pre-synthesized graphenes and carbon quantum dots that can be intercalated into MX 2 , [102,106,119] and (iii) hydrothermal/solvothermal methods that contain organic molecules, such as glucose, PVP, octylamine, oleic acid, dopamine, CTAB, that can be intercalated and carbonized. [76,108,114] For ) and long cycle life (over 500 cycles).…”

“…The interlayer spacing of MoS 2 is expanded to 0.99 nm, which matches well with the sum of MoS 2 monolayer thickness (0.62 nm) and carbon monolayer thickness (0.35 nm) and is also close to the simulated value (0.95 nm). [119] After annealing at 700 °C, 1T-MoS 2 converted to a stable 2H phase with an interlayer spacing of 0.98 nm. Meanwhile, the chemically attached insulating octylamine molecules were effectively removed, which contributes to enhancing electrical conductivity of the nanotubes.…”

Pressure‐Assisted Interface Engineering in MoS2/Holey Graphene Hybrids for Improved Performance in Li‐ion Batteries

“…Structural stability of the MoS 2 /graphene electrode is highly dependent on the interfacial contact in nanohybrid. It has been shown that tight integration between thin MoS 2 and graphene nanosheets, a strong bonding of MoS 2 to the edges of graphene nanoribbons or the surface of carbon fibers and hybridization of MoS 2 monolayers with graphene greatly enhance the capacity, rate capability, and cycling ability of Li‐ion battery. The intimate interaction between conducting carbon component and MoS 2 was indicated to reduce the contact resistance in the electrode and facilitate the transport of charge carriers .…”

In-situ phase transition to form porous h-MoO3@C nanofibers with high stability for Li+/Na+ storage

“…However, with the rapid development of science and technology, the researches of higher capacity and longer cycling performance of LIBs have become urgent. On the other hand, sodium ion batteries (SIBs) have recently received wide publicity as an energy storage system due to more natural abundance of Na reserves [10,11]. The theoretical capacity of the traditional commercial graphite anode is only 372 mA h g −1 for LIBs [12,13], even lower for SIBs [14,15], limiting the application of high efficiency energy demand with high stability both for LIBs and SIBs.…”