Reactant conversion–intercalation strategy toward interlayer-expanded MoS₂ microflowers with superior supercapacitor performance

Abstract

In order to avoid the complicated control and fussy procedure associated with foreign species and templates in conventional synthesis strategies, a simple reactant conversion-intercalation strategy is developed to synthesize the...

Self-assembled molybdenum disulfide nanoflowers regulated by lithium sulfate for high performance supercapacitors

“…5a reveal quasi-rectangular shape and keep the shape unchanged even at the high scan rate of 100 mV s −1 , demonstrating the superior capacitive behavior of the SSC device. 12 The GCD curves of the SSC device are shown in Fig. 5b .…”

“…Wang et al prepared MoS 2 micro flowers with an interlayer spacing of 0.94 nm by reactant conversion-intercalation strategy, which delivered a specific capacity of 246.8 F g −1 at 0.5 A g −1 . 12 Cai et al fabricated PEDOT@MoS 2 composite with an interlayer spacing of 1.02 nm via electrochemical co-deposition method, which exhibited a high specific capacity of 4418 mF cm −2 at 2 mA cm −2 and 100% of capacitance retention after 10 000 cycles. 13 In addition, the usually synthesized MoS 2 is stable semiconducting phase (2H-MoS 2 ) with low conductivity, while metallic phase (1T-MoS 2 ) is thermodynamically metastable but reveals better conductivity and hydrophilicity than 2H-MoS 2 .…”

First-principles design of nanostructured electrode materials for Na-ion batteries: challenges and perspectives

“…With migration mechanisms at the 2D heterojunction being unveiled from first principles, experimental works can set up specific synthesis pathways (e.g., phase-selected and defects-engineering syntheses) and preparation procedures (e.g., interlayer expanded interfaces) toward more functional products. [83][84][85] Titanium oxides are also capable of reversibly intercalating Na at low redox potentials. Starting from the structural lithium analogue, the rock salt-type Na 2 Ti 3 O 7 has been proposed as NIB anode.…”

Flower-like manganese and phosphorus co-doped MoS2with high 1T phase content as a supercapacitor electrode material

“…Supercapacitors have received widespread attention as a result of their merits of high power density, fast charge/discharge rate, and long cyclability. 1 Supercapacitors can be categorized into electrochemical double layer capacitors (EDLCs) and pseudocapacitors on the basis of different energy storage mechanisms. 2 The EDLCs accumulate charge at the electrode/electrolyte interface by ion absorption/desorption, while pseudocapacitors store charge through the redox reactions of the electrode.…”