Self-assembled multilayer WS2/GO films on amorphous silicon coating for enhancing the lubricating properties

Zeng, Qunfeng; Ning, Zekun; Pang, Zeming; Wang, Zhao; Zheng, Chenjie

doi:10.1016/j.apsusc.2023.157184

Cited by 10 publications

(4 citation statements)

References 27 publications

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“…In contrast, the D and G band of GO is 1350.63 and 1581.23 cm −1 , respectively, and the corresponding I D /I G value is 1.04. It is acknowledged that the D band is related to the level of carbon disorder, and the G peak comes from the E 2g vibration mode of carbon representing sp 2 carbon [34,35]. The higher I D /I G value of GO/Fe-VO 4 -BIPY-1 proves that the degree of graphitization is lower.…”

Section: Resultsmentioning

confidence: 99%

Vanadate-based Fe-MOFs as promising negative electrode for hybrid supercapacitor device

Wang,

Lu,

Wang

et al. 2024

Nanotechnology

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In the supercapacitor field, negative electrodes are mainly concentrated in carbon-based materials, such as activated carbon, carbon nanotubes, graphene, and so forth. However, materials based on metal-organic frameworks (MOFs) as negative active components are relatively rare. Herein, a series of composite materials based on graphene oxide (GO) and vanadate-based Fe-organic frameworks have been prepared by hydrothermal method namely GO/Fe-VO4-BIPY. The deposition amount of polyoxometalate-based metal-organic frameworks (POMOFs) on the surface of graphene is adjusted by changing the content of POMOFs. Through the deposition, it can effectively reduce the accumulation between graphene, and increase the dispersion of POMOFs. As a result, the charge storage performance of the as-obtained materials is greatly improved. Among these materials, GO/Fe-VO4-BIPY-1 has the most prominent performance due to its excellent synergistic effect between the Faraday chemical reaction and electric double-layer capacitance. In comparison with pristine Fe-VO4-BIPY, GO/Fe-VO4-BIPY-1 delivers more excellent surface area and therefore exhibits abundant redox reaction sites, achieving better electrochemical performance the best. After assembly with the positive Ni(OH)2 electrode, the maximum energy density of 46.84 W h kg-1 at a power density of 850 W kg-1 is achieved.

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Section: Resultsmentioning

confidence: 99%

Vanadate-based Fe-MOFs as promising negative electrode for hybrid supercapacitor device

Wang,

Lu,

Wang

et al. 2024

Nanotechnology

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“…The oxide on the surface of the 400 • C TO sample is on the verge of forming an oxide film, and the oxide aggregation is obvious. As the temperature rises, the rate of oxide generation accelerates and the oxide grows and agglomerates, forming complete oxide layers [31]. As shown in Figure 2b,c, clear oxide layers can be observed in 600 • C and 700 • C TO samples, where the oxide layer thickness of the 700 • C TO sample reaches 3.656 µm.…”

Section: Oxide Layermentioning

confidence: 89%

Study on High-Temperature, Ultra-Low Wear Behaviors of Ti6Al4V Alloy with Thermal Oxidation Treatment

Zeng,

Sun,

Pang

et al. 2024

Coatings

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Thermal oxidation (TO) is a simple and economical way to enhance the wear resistance of the Ti6Al4V alloy. The TO temperature has a very important effect on the tribological properties of the TiO2 layer formed. However, the impact of the oxidation temperature on the high-temperature tribological behavior of a TO-treated Ti6Al4V alloy is not clear. Therefore, the Ti6Al4V alloy was oxidized at 400 °C, 600 °C, and 700 °C for 36 h, and the sliding friction experiments were conducted at room temperature (RT) and 400 °C with a Si3N4 ball as the counter body to comparatively study the effect of the oxidation temperature on the high-temperature friction behavior of the TO-treated Ti6Al4V alloy. The results show that the TO treatment can effectively improve the wear resistance of the samples at both room and high temperatures. Among them, the oxidation-treated samples at 700 °C show the best wear resistance, with a reduction of 92.6% at high temperatures; the amount of wear loss at room temperature was so small that it was almost incalculable. At room temperature, the friction surface formed uneven agglomerate formations, resulting in an elevated coefficient of friction (CoF) compared to the untreated samples. At a high temperature, however, the CoF is reduced compared to the untreated samples due to the formation of a homogeneous transfer film in the wear area that is caused by the interaction of Si3N4 and oxygen.

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“…Later, they developed a thermal-assisted mechanical peeling and transfer method, which wrapped different types of two-dimensional materials on the AFM tip so that the tip could directly detect the interlayer coupling, and they achieved a friction coefficient of 10 −4 ~10 −5 , all of which had nothing to do with the sliding direction [73]. There is still a lot of work being carried out in this field, which will deepen and expand the research on superlubricity [74,75]. It is worth noting that the superlubricity theory is based on the incommensurability of two crystal planes, so the superlubricity is dependent on the slip direction, that is, it can only be realized in a specific slip direction.…”

Section: Solid Superlubricity (1) Mos 2 Lubricationmentioning

confidence: 99%

Section: Solid Superlubricity (1) Mos 2 Lubricationmentioning

confidence: 99%

A Systematic Review of the Recent Advances in Superlubricity Research

Zeng,

Zhang

2023

Coatings

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Friction and the wear caused by friction will not only lead to energy dissipation, but will also cause damage to the function of mechanical parts, affecting the precision and lifespan of mechanical devices. Superlubricity as an ideal state of zero friction has become a hot research topic in recent years. There have been many reviews on the concept, origin, and research progress of superlubricity, but, among them, there are more presentations on the research status of solid superlubricity and liquid superlubricity; however, the theoretical summarization of solid–liquid combined superlubricity and high-temperature superlubricity is still imperfect and lacks a systematic and comprehensive review. The mechanism of superlubricity is not explicitly presented in many reviews, which are clearly summarized in this paper. This paper introduces superlubricity from friction, and then introduces the origin of superlubricity, and presents the research progress on superlubricityby separating it into in four categories: liquid superlubricity, solid superlubricity, solid–liquid combined superlubricity, and high-temperature superlubricity. By analyzing the superlubricity system, the mechanism of realizing various types of superlubricity, such as incommensurability, hydration, and oxidation, is summarized. Based on the research progress of superlubricity, the development prospects, opportunities, and challenges of superlubricity in the future are discussed.

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Self-assembled multilayer WS2/GO films on amorphous silicon coating for enhancing the lubricating properties

Cited by 10 publications

References 27 publications

Vanadate-based Fe-MOFs as promising negative electrode for hybrid supercapacitor device

Vanadate-based Fe-MOFs as promising negative electrode for hybrid supercapacitor device

Study on High-Temperature, Ultra-Low Wear Behaviors of Ti6Al4V Alloy with Thermal Oxidation Treatment

A Systematic Review of the Recent Advances in Superlubricity Research

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