Layered MoS2/PPy nanotube composites with enhanced performance for supercapacitors

MoS2 Nanosheets Vertically Grown on Carbonized Corn Stalks as Lithium-Ion Battery Anode

“…7,24 As shown in Figure 3c, S 2p exhibits two contributions, 2p 3/2 and 2p 1/2 , located at ∼163.3 and ∼164.5 eV, respectively. 16,36,37 In Figure 3d, it can be observed that the C 1s peaks of CCS are composed of four components: C sp 2 (∼285.1 eV), C sp 3 (∼286.0 eV), C−O bonds (∼288.0 eV), and π− π* (∼290.1 eV). 12,22,38 According to the results, the CCS shows a high degree of graphitization.…”

Recent Advances in 2D-MoS2 and its Composite Nanostructures for Supercapacitor Electrode Application

“…The symmetric MoS 2 −NH 2 /PANI supercapacitor delivered a high energy density of 4.0 Wh kg −1 at a power density of 75 W kg −1 , and even when the power density was increased to 14 kW kg −1 , the energy density still remained at 3.5 Wh kg −1 . By using the polypyrrol nanotubes as a substrate for the growth of MoS 2 nanosheets, a PPy-MoS 2 composite electrode was reported by Chang et al 251 Here the electrostatic force between MoS 2 and PPy allowed the MoS 2 nanosheets to overgrow on the PPy nanotubes and form a core@shell structure. The electrochemical characterizations were carried out in 1 M KCl solution, and the maximum specific capacitance of 307.5 F g −1 at 1 A g −1 in the three electrode cell system with 96.47% stability over 1000 cycles was achieved.…”

Tuning the structure of three dimensional nanostructured molybdenum disulfide/nitrogen-doped carbon composite for high lithium storage

“…The crystallinity degree of MoS 2 was improved as well during this annealing process [6,27]. (Figure 2j), which evidences the formation of a hybrid structure [28]. In addition, the element oxygen was also detected, and its presence may come from organic contamination and oxidized Mo atoms [29,30].…”

“…2MoS 2 /CNT may possess the best performance since it contained higher MoS 2 mass loading than 1MoS 2 /CNT, but no MoS 2 clusters formed between the tubular nanostructures compared with 4MoS 2 /CNT. (Figure 3h) [28]. The element oxygen, possibly from organic contamination and oxidized Mo atoms, was also detected [29].…”

“…The annealed MoS 2 and 2MoS 2 /C composites displayed two peaks at 13.8° and 33.3°, coincident with the typical peaks for hexagonal-phase MoS 2 (JCPDS 37-1492). However, the peak of carbon at around 25 o cannot be identified in the XRD patterns of 2MoS 2 /PPy or 2MoS 2 /C composites, which may be explained by the observation that PPy or CNT/CNP were completely covered by MoS 2 nanosheets[28].…”