MoS₂ ultrathin nanosheets obtained under a high magnetic field for lithium storage with stable and high capacity

Abstract

A new strategy, namely a high magnetic field-induced method, has been designed to enhance lithium storage properties of MoS2 ultrathin nanosheets. The MoS2 ultrathin nanosheets obtained under 8 T exhibit improved cycling stability at high currents, better rate performance and reduced electrochemical impedance, compared to MoS2 ultrathin nanosheets obtained without a high magnetic field.

Graphene‐Assisted Exfoliation of Molybdenum Disulfide to Fabricate 2D Heterostructure for Enhancing Lithium Storage

“…MoS 2 nanosheets, which were exfoliated from its bulk counterpart or synthesized in a number of different ways, exhibited better electrochemical performances compared with MoS 2 bulk . Hu et al reported that a high magnetic field (8 T) was used to control the synthesis of MoS 2 ultrathin nanosheets, and the products have fewer defects and better crystallite orientation. High‐pressure hydrothermal method was adapted to synthesize hierarchical MoS 2 spheres composed of ultrathin nanosheets.…”

Self‐Stacked, Small‐Sized MoS2 Nanosheets for High‐Performance Lithium‐Ion Batteries

“…The literature data are separated into exfoliation of MoS 2 and hydrothermally synthetic MoS 2 electrodes. The filled black pentagrams represent our capacity data, normalized to the total anode mass: a) cycle performances of MoS 2 nanosheets with maximum cycle number; b) rate capacities of MoS 2 nanosheets …”

“…Thes ize of MoS 2 nanosheetsw as smaller than that of commonM oS 2 nanosheets and 2H polytype was more stable;t hus,t hese nanosheets were appropriate as anode materials for LIBs.E lectrochemical studies showed that the MoS 2 nanosheets possessed ah igh reversible capacity of 1133 mAh g À1 after 130 cycles,ahigh rate capability (817.1 mAh g À1 at 2000 mA g À1 ), and aC oulombic efficiency of over 97 %a fter three cycles.I nt erms of the useo fa ne nvironmentally friendly,c ost-effective,s calable,a nd facile liquid exfoliation route with pristine MoS 2 powders as starting materials,w e believet hat the achieved electrochemical performance, which is comparable to most available data reported in the literature,i sfascinating for LIBs. The filled blackp entagramsrepresentour capacityd ata, normalized to the total anodem ass:a )cycle performances of MoS 2 nanosheetsw ith maximumcyclenumber; [9,[11][12][13][14][15][16][17][18][19] b) rate capacities of MoS 2 nanosheets. [9, 11-21, 23, 42] Energy Technol.…”

“…[8] To promotet he practical application and to obtain as uitable MoS 2 nanostructure for LIBs,v arious synthetic methods have been developed, as shown in Table S1 in the Supporting Information. Intensive attention has been paid to the synthesis of MoS 2 nanostructured materials through hydro- [9][10][11][12][13][14] or solvothermal [15][16][17] routes,b yu sing molybdenum-containing compounds as precursors,a long with sulfur-containing compounds as reducing agents.T his method can result in MoS 2 nanostructured materials with ah igh reversible capacity of over 900 mAh g À1 at ac urrent density of 100 mA g À1 (Table S1 in the Supporting Information). Hydro-or solvothermal processing also suffers from long reaction times, high temperature (200-250 8C), and high pressure;t hese can be harsh on the equipment and also consume more energy.…”

Tuning the structure and properties of a multiferroic metal–organic-framework via growing under high magnetic fields

“…[29][30][31] Also, the MFEs on the growth of materials have been extensively studied by our group, which found that both the structure and the properties of materials can be regulated by magnetic elds. [32][33][34][35][36][37][38] For example, it is believed that during Co 3 O 4 growth, the alignment of the spins and thus the magnetic and crystal lattices of Co 3 O 4 are inuenced by the external magnetic eld. 35 In this paper, we extend the study to grow single crystals of formate-based perovskites [(CH 3 ) 2 NH 2 ][Mn(HCOO) 3 ] (DMMnF) under a high magnetic eld.…”