Liquid phase exfoliation of MoO₂ nanosheets for lithium ion battery applications

Abstract

Molybdenum dioxide (MoO2) is a layered material which shows promise for a number of applications in the electrochemical energy storage arena. This work describes the production of molybdenum dioxide nanosheets by liquid phase exfoliation.

Liquid Exfoliation of Ni2P2S6: Structural Characterization, Size-Dependent Properties, and Degradation

“…Prior to the measurement, samples were refreshed by bath sonication to avoid potential impact from sedimentation similar to previous work. 23,24,40,57 Extinction spectra from the small-sized sheets (3-10k g) stored at 20°C and 40°C for up to 488 hours are shown in figure 5A and 5B, respectively. Extinction and absorbance spectra of other sizes and storage conditions are shown in the SI (Figure S10, S12).…”

“…This is because the process is very versatile, scalable and applicable to a large variety of layered crystals resulting in the production of colloidally dispersed nanosheets that can be conveniently processed into thin films or blended with other materials in composites. 14,15 Examples of layered materials that have been exfoliated include graphite, 16,17 h-BN, 18,19 transition metal dichalcogenides (TMDs), 20,21 transition metal oxides, 22,23 black phosphorous (BP), 24,25 layered III-VI semiconductors (e.g. GaS, 26 InSe 27 ), IV-VI semiconductors (e.g.…”

“…26,36,37 Furthermore, it is currently unclear whether exfoliated Ni2P2S6 is stable under ambient conditions or whether it oxidizes similar to other materials such as black phosphorus, 24,38,39 TiS2 40 or MoO2. 23 This information is absolutely crucial giving the interest in using transition metal hexathiohypo diphosphates as catalysts for water splitting. 4 Here, we address these points.…”

Three-dimensional hierarchical ZnCo2O4@C3N4-B nanoflowers as high-performance anode materials for lithium-ion batteries

“…[34][35][36] However, its poor conductivity and cycle stability have limited its practical application in LIBs. 8,9 In order to improve the electrochemical performance of the material, researchers have increased the specic surface area of the material by changing its morphology, such as nanospheres, 10 nanotubes 11 and nanosheets, 12,13 but the requirement for precise control of morphology in the process of experimental synthesis can limit the wide application of the material. Therefore, it is important to develop an easy, general and environmentally benign process for the synthesis of 3D hierarchical ZnCo 2 O 4 for electrode materials.…”

Conductor‐Free Anode of Transition Metal Dichalcogenide Nanosheets Self‐Assembled with Graft Polymer Li‐Ion Channels

“…[ 18–20 ] Furthermore, the exfoliated TMD nanosheets with large surface areas offer numerous electrochemical reaction sites on which each lithium ion is effectively reduced by taking an electron from the anode. [ 21,22 ]…”