Enhanced piezocatalysis of polymorphic few-layered MoS2 nanosheets by phase engineering

Ren, Tingting; Tian, Wenrou; Shen, Qian; Yuan, Zhenting; Chen, Dongyun; Li, Najun; Lu, Jianmei

doi:10.1016/j.nanoen.2021.106527

Cited by 77 publications

(35 citation statements)

References 35 publications

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“…97 The polymorphic molybdenum disulfide (MoS 2 ) typically has the trigonal prismatic phase (semiconducting 2H-phase), octahedral phase (metallic 1T-phase), and distorted 1T-phase (semi-metallic 1T′-phase). [98][99][100] Guo et al demonstrated phase-/defect-engineered MoS 2 @TiO 2 catalysts for plasmonic solar water splitting. 101 The phase transition from 2H-to 1T-MoS 2 induced by the hydrothermal treatment coupled with the surface vacancies (V S ) was responsible for the enhanced localized surface plasmon resonance, leading to a superior H 2 yield rate of 308 μmol h −1 cm −2 , which was superior to the state-of-the-art plasmonic catalysts.…”

Section: Advantages Of Facet and Phase Engineering For Water Splittingmentioning

confidence: 99%

Crystal facet and phase engineering for advanced water splitting

et al. 2022

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Section: Advantages Of Facet and Phase Engineering For Water Splittingmentioning

confidence: 99%

Crystal facet and phase engineering for advanced water splitting

et al. 2022

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“…Some approaches have been developed to obtain 1T-phase MoS 2 , such as chemical Li + intercalation/extraction exfoliation, , chemical vapor deposition (CVD), and solvothermal/hydrothermal method. , In spite of stunning developments in improving specific capacity of MoS 2 anodes, obvious capacity attenuation was accompanied for both cycling and rate performance. , It is ascribed to the habitual conversion of the metastable 1T-phase MoS 2 to the stable 2H phase via restacking in the charge–discharge process . In addition, the annealing process is usually required to improve the crystallinity of MoS 2 and form more active sites, but it also encounters the phase conversion from 1T to 2H. , Therefore, the formation of a stable 1T-phase MoS 2 that can withstand annealing and electrochemical cycling simultaneously is significant and challenging.…”

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Electron-Injection and Atomic-Interface Engineering toward Stabilized Defected 1T-Rich MoS₂ as High Rate Anode for Sodium Storage

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1T-phase MoS2 is a promising electrode material for electrochemical energy storage due to its metallic conductivity, abundant active sites, and high theoretical capacity. However, because of the habitual conversion of metastable 1T to stable 2H phase via restacking, the poor rate capacity and cycling stability at high current densities hamper their applications. Herein, a synergetic effect of electron-injection engineering and atomic-interface engineering is employed for the formation and stabilization of defected 1T-rich MoS2 nanoflowers. The 1T-rich MoS2 and carbon monolayers are alternately intercalated with each other in the nanohybrids. The metallic 1T-phase MoS2 and conductive carbon monolayers are favorable for charge transport. The expanded interlayer spacing ensures fast electrolyte diffusion and the decrease of the ion diffusion barrier. The obtained defected 1T-rich MoS2/m-C nanoflowers exhibit high Na-storage capacity (557 mAh g–1 after 80 cycles at 0.1 A g–1), excellent rate capacity (411 mAh g–1 at 10 A g–1), and long-term cycling performance (364 mAh g–1 after 1000 cycles at 2 A g–1). Furthermore, a Na-ion full cell composed of the 1T-rich MoS2/m-C anode and Na3V2(PO4)3/C cathode maintains excellent cycling stability at 0.5 A g–1 during 400 cycles. Theoretical calculations are also performed to evaluate the phase stability, electronic conductivity, and Na+ diffusion behavior of 1T-rich MoS2/m-C. The energy storage performance demonstrates its excellent application prospects.

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“…This indicates that the hydrogen production reaction is driven by the ultrasonic treatment. Since the piezoelectric property is the basis of piezocatalysis, 27,80 piezoelectric force microscopy (PFM) analysis was utilized to investigate the piezoelectric property of CWN. As shown in Fig.…”

Section: Resultsmentioning

confidence: 99%