Molybdenum disulfide synthesized by molybdenum-based metal organic framework with high activity for sodium ion battery

Encapsulation of 2D MoS2 nanosheets into 1D carbon nanobelts as anodes with enhanced lithium/sodium storage properties

“…14,44 Additionally, the small peak at 236.2 corresponding to Mo 6+ is generated from the partial surface oxidation of MoS 2 , 45 while the peak at about 226.6 eV is attributed to S 2s. 46 The 162.3 eV and 163.5 eV peaks, which represent S 2p 3/2 and S 2p 1/2 , respectively, 47,48 can be seen in Fig. 3c.…”

“…They also contain semicircles and sloping straight lines, which present the R ct and Z w , respectively. 46,75 Obviously, the value of R ct is about 151 Ω after 5 cycles, which is smaller than 432 Ω before cycling, indicating that the conductivity of the electrode is increased after 5 cycles. The fitting lines of Z ′ and ω −1/2 are shown in Fig.…”

Polypyrrole Modified MoS2 Nanorod Composites as Durable Pseudocapacitive Anode Materials for Sodium-Ion Batteries

“…Although metal sulfide has its own advantages, there are still factors affecting battery capacity and cycle life, such as its low intrinsic conductivity, repeated electrochemical processes which lead to material structure crushing, formation of a solid electrolyte interface (SEI membrane) causing internal resistance, volume expansion, and so on. In order to solve these problems, researchers have obtained metal sulfide anode materials with good electrochemical properties by making materials at nanometer scale, compounding them with carbon, and designing the spatial structures of these materials [17][18][19][20][21]. Liu et al [22] designed a type of MoS 2 composite material wrapped in nitrogen-doped 3D hollow carbon framework pores, which can improve the stability of the structure and expose more active sites, such that it showed an excellent electrochemical performance of 413.3 mA h g −1 after 100 cycles at 0.1 A g −1 .…”

Layered Niobium Oxide Hydrate Anode with Excellent Performance for Lithium-Ion Batteries

“…6 Not surprisingly, lithium-ion batteries (LIBs) have an extraordinary influence in the field of energy storage due to their good stability, large reversible capacity, and easy portability. 7,8 Compared with the first-generation lead−acid batteries, LIBs have a high energy density of 300 Wh kg −1 and can be used in large-scale energy storage devices such as electric vehicles. 9−11 The further development of LIBs is limited by their unstable cycle life and poor safety performance.…”

“…Fortunately, rechargeable batteries can provide electricity in a green and sustainable way, thereby solving problems such as energy depletion and environmental pollution. − Lithium is the third lightest element and has the lowest reduction potential among all known elements . Not surprisingly, lithium-ion batteries (LIBs) have an extraordinary influence in the field of energy storage due to their good stability, large reversible capacity, and easy portability. , Compared with the first-generation lead–acid batteries, LIBs have a high energy density of 300 Wh kg –1 and can be used in large-scale energy storage devices such as electric vehicles. − …”