MoS<sub>2</sub> nanoparticle/activated carbon composite as a dual-band material for absorbing microwaves

Negi, Praveen; Kumar, Ashavani

doi:10.1039/d1na00292a

Cited by 29 publications

(12 citation statements)

References 57 publications

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“…More importantly, the existence of MoS 2 in the VCNT/MoS 2 composite is supported by the observed peaks for the E 2g 1 (in-plane vibration) and A g 1 (out-of-plane vibration) vibrational modes of hexagonal MoS 2 at ∼372 and ∼401 cm –1 , respectively. The peaks observed ∼810–990 cm –1 were due to the partial oxidation of sulfur from the outermost MoS 2 layer. , …”

Section: Resultsmentioning

confidence: 99%

“…The peaks observed ∼810−990 cm −1 were due to the partial oxidation of sulfur from the outermost MoS 2 layer. 32,33 XPS analysis was performed on the VCNT and VCNT/ MoS and C�O at 289.0 eV. 25,26 The high-resolution spectrum of Mo 3d is characterized by the sub-peaks contributed from different phases and oxidation states.…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

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Moving toward Smart Hybrid Vertical Carbon/MoS₂ Binder-Free Electrodes for High-Performing Sodium-Ion Batteries

Shaji

Santhosh

Zavašnik

et al. 2023

ACS Sustainable Chem. Eng.

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Finding potential electrodes with smart construction and design is one of the major tasks in the development of advanced sodium-ion batteries (SIBs) and in bridging the gap by bringing them to realization. In this work, we report on the design of such a binder-free composite anode realized by combining vertical carbon nanotube/molybdenum sulfide (VCNT/MoS 2 ) hybrid nanostructures. The well-aligned vertical nanostructures in the binder-free VCNT/MoS 2 hybrid composite electrode enhance the electrolyte penetration into the electrode and shorten the ion diffusion channels. Moreover, the VCNT provides better ion/ electron conductivity for the electrode. Due to these favorable characteristics, binder-free VCNT/MoS 2 hybrid composite electrodes exhibit superior electrochemical properties when employed as an anode for SIBs, especially superior rate capability with a specific discharge capacity of 403 mA h g −1 at a high current density of 3200 mA g −1 . The findings are expected to lead us in the direction of designing smart electrodes with hybrid nanostructured active materials, completely free of any binder for high-performing electrochemical energy storage applications.

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Section: Resultsmentioning

confidence: 99%

Section: ■ Experimental Sectionmentioning

confidence: 99%

Moving toward Smart Hybrid Vertical Carbon/MoS₂ Binder-Free Electrodes for High-Performing Sodium-Ion Batteries

Shaji

Santhosh

Zavašnik

et al. 2023

ACS Sustainable Chem. Eng.

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“…The G band, positioned around 1584 cm −1 , is a distinctive feature in carbon allotropes, signifying in-plane C-C vibrations. On the other hand, the D band, located approximately at 1350 cm −1 , corresponds to disorder and irregularities [55]. The significant correlation observed between the COF and the extent of transfer layer formation underscores the positive impact of MoS 2 on both the tribological characteristics and the longevity of the protective film.…”

Section: Study Of Worn Surfaces and Wear Mechanismmentioning

confidence: 90%

Synergetic effect of oleophilic textured surfaces and MoS₂ on the tribological properties of Ti-6Al-4V alloy under dry and lubricated sliding conditions

Narayana,

Saleem

2024

Surf. Topogr.: Metrol. Prop.

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In the present work, surface modification of Ti-6Al-4V alloy was carried out using Laser surface texturing (LST). The investigation aims to explore the synergetic impact of LST and molybdenum disulfide (MoS2), as a solid lubricant, on the tribological properties of Ti-6Al-4V alloy. Three types of LST textures (Circular, triangular, and square textures) were created on the Ti6Al4V alloy. Subsequently, tribological tests were conducted on a universal tribometer (ball-on-disc), at a load of 20 N with a frequency of 15 Hz. The worn surface was analyzed using various methods, including optical microscopy, 3D-profilometer, FESEM, EDAX analysis, and Raman spectroscopy. The study compared the coefficient of friction (COF) and wear behavior of un-textured surfaces (UTS) with those of textured surfaces (TS) under both dry sliding conditions (DSC) and lubricated sliding conditions (LSC). The results demonstrated a significant reduction in the COF and wear coefficients on the TS. Specifically, the circular texture exhibited significant results with a 10.30%, 10.42%, and 28.80% decrease in COF and a remarkable reduction of 39.22%, 47.51%, and 77.90% in wear coefficients compared to the UTS tested under DSC and LSC (using PAO-4 and PAO-4 + 1% wt MoS2). Severe abrasion, adhesion, and delamination as the primary wear mechanisms were observed on the UTS and TS under DSC, while the LSC was characterized by mild adhesive and delamination wear on the UTS and TS. The carbon layer formation and concentration of Mo and S particles resulted in lower friction and wear coefficients for the UTS, and TS under LSC (PAO-4 + 1% wt MoS2). The analysis indicated that the use of LST and solid lubricant nanoparticles on a Ti-6Al-4V alloy would result in improved service life and better endurance in cutting tools and tribo-mating parts.

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“…MoS 2 /AC composite was designed, and the unique dual-band microwave attenuation in C (4–8 GHz) and Ku (12–18 GHz) bands was demonstrated. The maximum RL of −31.8 dB for MoS 2 /AC composite was achieved with the filler loading of 50 wt % …”

Section: Low-dimensional Mos2 Nanostructures For Microwave Absorptionmentioning

confidence: 95%

Recent Progress and Outlook on the Emerging Low-Dimensional MoS₂ Nanostructures for Microwave Absorption

Li,

Liang,

Wang

et al. 2023

ACS Appl. Electron. Mater.

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To tackle the deteriorating electromagnetic interference and pollution problems, enhanced microwave absorption materials are urgently being developed. Lowdimensional molybdenum disulfide (MoS 2 ) nanostructures have been comprehensively researched and employed as microwave absorption materials in virtue of their tailorable valence bands, ample active polarization sites, appropriate electronic band configuration, ample morphologies, distinctive dielectric, and electric behaviors. The excellent merits are expected to satisfy the extensive and unique application requirements. Low-dimensional MoS 2 nanostructure microwave absorption materials excel in ultrathin thickness, lightweight, broad effective absorption bandwidth, and strong attenuation capability. The advantages are due to well-matched impedance matching, multiple polarization relaxations, and multiple reflections and scatterings effect. This review sketches up the theories on microwave propagation, attenuation, and performance evaluation. Simultaneously, the preparation methods of lowdimensional MoS 2 nanostructures are elaborately categorized. More importantly, the cuttingedge research progresses on low-dimensional MoS 2 nanostructures for microwave absorption are thoroughly combed. Finally, some perspectives and challenges for the future orientation of low-dimensional MoS 2 nanostructures are highlighted. Without doubt, lowdimensional MoS 2 nanostructures have illuminated boundless roadmaps for further advancement as high-performance microwave absorption materials.

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MoS₂ nanoparticle/activated carbon composite as a dual-band material for absorbing microwaves

Abstract: In search of novel high performance microwave (MW) absorbers, MoS2 material has emerged as a new class of MW absorbing material. However the poor impedance matching limits its application. In...

Cited by 29 publications

References 57 publications

Moving toward Smart Hybrid Vertical Carbon/MoS₂ Binder-Free Electrodes for High-Performing Sodium-Ion Batteries

Moving toward Smart Hybrid Vertical Carbon/MoS₂ Binder-Free Electrodes for High-Performing Sodium-Ion Batteries

Synergetic effect of oleophilic textured surfaces and MoS₂ on the tribological properties of Ti-6Al-4V alloy under dry and lubricated sliding conditions

Recent Progress and Outlook on the Emerging Low-Dimensional MoS₂ Nanostructures for Microwave Absorption

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MoS2 nanoparticle/activated carbon composite as a dual-band material for absorbing microwaves

Abstract: In search of novel high performance microwave (MW) absorbers, MoS2 material has emerged as a new class of MW absorbing material. However the poor impedance matching limits its application. In...

Cited by 29 publications

References 57 publications

Moving toward Smart Hybrid Vertical Carbon/MoS2 Binder-Free Electrodes for High-Performing Sodium-Ion Batteries

Moving toward Smart Hybrid Vertical Carbon/MoS2 Binder-Free Electrodes for High-Performing Sodium-Ion Batteries

Synergetic effect of oleophilic textured surfaces and MoS2 on the tribological properties of Ti-6Al-4V alloy under dry and lubricated sliding conditions

Recent Progress and Outlook on the Emerging Low-Dimensional MoS2 Nanostructures for Microwave Absorption

Contact Info

Product

Resources

About

MoS₂ nanoparticle/activated carbon composite as a dual-band material for absorbing microwaves

Moving toward Smart Hybrid Vertical Carbon/MoS₂ Binder-Free Electrodes for High-Performing Sodium-Ion Batteries

Moving toward Smart Hybrid Vertical Carbon/MoS₂ Binder-Free Electrodes for High-Performing Sodium-Ion Batteries

Synergetic effect of oleophilic textured surfaces and MoS₂ on the tribological properties of Ti-6Al-4V alloy under dry and lubricated sliding conditions

Recent Progress and Outlook on the Emerging Low-Dimensional MoS₂ Nanostructures for Microwave Absorption