Integrated 3D porous C-MoS2/nitrogen-doped graphene electrode for high capacity and prolonged stability lithium storage

MgO-template-assisted synthesis of worm-like carbon@MoS2 composite for lithium ion battery anodes

“…Moreover, the A 1 g peaks of these two composites shifted down to 404 cm -1 . According to previous reports, the A 1 g peak of the MoS2 would shift toward low wavenumber when the layer number is less than six [32,44]. Therefore, it can be inferred that the incorporation of sucrose as the carbon source into the MoS2 interlayers leads to the blue-shift of the A 1 g mode in comparison with that of bare MoS2, which is related to the formation of few-layered MoS2 in two C@MoS2 composites.…”

“…39 Remarkably, as shown in Fig. 5d, these two Raman peaks of C@MoS2-0 and C@MoS2-2 are much weaker and broader than that of bare MoS2, implying the presence of few-layered structure owing to the phonon confinement [44]. Moreover, the A 1 g peaks of these two composites shifted down to 404 cm -1 .…”

Design of Advanced MnO/N‐Gr 3D Walls through Polymer Cross‐Linking for High‐Performance Supercapacitor

“…[20,21] In addition, the performance of energy storaged evices, such as supercapacitors and lithium-ion batteries, can be further improvedb yd oping graphene with heteroatoms (e.g.,N ,P ,S ,o r B) to improvet he electrical conductivity. [22][23][24] To date, as eries of studies has been carried out to obtain high-performance energy storaged evices by using 3D nitrogen-doped graphene-based hybrid materials, including 3D MnO 2 /N-Gr aerogels, [25] 3D nitrogen-doped graphene/Fe 3 O 4 , [26] 3D foam of ultrafine TiO 2 nanoparticles embedded in N-doped graphene, [27] 3D porous C-MoS 2 /nitrogen-doped graphene, [28] and 3D macroscopic SnO 2 /nitrogen-doped graphene aerogels. [29] However,t ot he besto fo ur knowledge,t he self-assembly of ah ydrogel/aerogel has only been carriedo ut through hydrothermalp rocessing, which leads to ar andomly oriented composition with poor mechanical properties and ar eduction in the accessible surface area due to the strong p-p interaction betweent he graphene oxide (GO) sheets.…”

Rationally Designed Silicon Nanostructures as Anode Material for Lithium‐Ion Batteries

“…Currently, the common technology of LIBs relies on the collaboration of a graphitic carbon anode (theoretical capacity of 370 mAh g À1 ) together with the lithium metal oxide (LiCoO 2 , 274 mAh g À1 ) or phosphate cathodes (LiFePO 4 , 170 mAh g À1 ), which delivers relatively low specific energy of %250 Wh Kg À1 (on cell level), far below the energy requirement of portable electronics and electric vehicles. [12,[14][15][16][17] To depose the energy complications of LIBs, a rich variety of efforts have been devoted to finding higher-capacity electrode materials. As for anode materials, alloy anodes have attracted extensive interest due to their remarkable specific capacity, such as silicon (Si), germanium (Ge), and tin (Sn).…”