Graphene–Ionic Liquid Based Hybrid Nanomaterials as Novel Lubricant for Low Friction and Wear

Khare, Varsha; Pham, Minh-Quan; Kumari, Nitee; Yoon, Hae-Sung; Kim, Chung-Soo; Park, Jae-IL; Ahn, Sung‐Hoon

doi:10.1021/am302761c

Cited by 116 publications

(73 citation statements)

References 18 publications

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“…Out of these studies, a large body of knowledge have emerged in recent years. When the cost, reliability and environmental health and safety issues have been addressed, it looks that these materials may provide great opportunities for all kinds of tribological applications [104][105][106].…”

Section: New Methodologiesmentioning

confidence: 99%

Influence of tribology on global energy consumption, costs and emissions

2017

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Abstract:Calculations of the impact of friction and wear on energy consumption, economic expenditure, and CO 2 emissions are presented on a global scale. This impact study covers the four main energy consuming sectors: transportation, manufacturing, power generation, and residential. Previously published four case studies on passenger cars, trucks and buses, paper machines and the mining industry were included in our detailed calculations as reference data in our current analyses. The following can be concluded:-In total, ~23% (119 EJ) of the world's total energy consumption originates from tribological contacts. Of that 20% (103 EJ) is used to overcome friction and 3% (16 EJ) is used to remanufacture worn parts and spare equipment due to wear and wear-related failures.-By taking advantage of the new surface, materials, and lubrication technologies for friction reduction and wear protection in vehicles, machinery and other equipment worldwide, energy losses due to friction and wear could potentially be reduced by 40% in the long term (15 years)and by 18% in the short term (8 years). On global scale, these savings would amount to 1.4% of the GDP annually and 8.7% of the total energy consumption in the long term.-The largest short term energy savings are envisioned in transportation (25%) and in the power generation (20%) while the potential savings in the manufacturing and residential sectors are estimated to be ~10%. In the longer terms, the savings would be 55%, 40%, 25%, and 20%, respectively.-Implementing advanced tribological technologies can also reduce the CO 2 emissions globally by as much as 1,460 MtCO 2 and result in 450,000 million Euros cost savings in the short term. In the longer term, the reduction can be 3,140 MtCO 2 and the cost savings 970,000 million Euros.Fifty years ago, wear and wear-related failures were a major concern for UK industry and their mitigation was considered to be the major contributor to potential economic savings by as much as 95% in ten years by the development and deployment of new tribological solutions. The corresponding estimated savings are today still of the same orders but the calculated contribution to cost reduction is about 74% by friction reduction and to 26% from better wear protection. Overall, wear appears to be more critical than friction as it may result in catastrophic failures and operational breakdowns that can adversely impact productivity and hence cost.

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Section: New Methodologiesmentioning

confidence: 99%

Influence of tribology on global energy consumption, costs and emissions

2017

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“…Khare et al [47] used imidazolium halogen salts, in particular, the highly viscous 1-butyl-3-methylimidazolium iodide to develop new graphene-IL nanolubricants. The tribological performance was again explained by interactions between the solid and fluid phases that changed the physicochemical and structural features of the IL.…”

Section: Ionanocarbon Lubricantsmentioning

confidence: 99%

Ionanocarbon Lubricants. The Combination of Ionic Liquids and Carbon Nanophases in Tribology

et al. 2017

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The present overview will focus on the tribological applications of what we have called ionanocarbon lubricants, that is, the combination of carbon nanophases (graphene, carbon nanotubes, nanodiamonds, carbon nanodots) and room-temperature ionic liquids in new dispersions, blends, or modified nanostructures and their use in tribology, lubrication, and surface engineering as friction-reducing, antiwear, and surface-protecting agents in thin films and composite materials. Further research lines and factors that limit the practical applications of the outstanding research results are also highlighted. The very recent results in these lines of research make this a necessary brief review.

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“…Thus, 2D materials are selected as high-performance and environmentally friendly lubricants [45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60]. …”

Section: Introductionmentioning

confidence: 99%

Research Progress in Application of 2D Materials in Liquid-Phase Lubrication System

Liu

Zhou

Xiao³

et al. 2018

Materials

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Two-dimensional (2D) materials are ultra-thin crystals with layered structures that have a monolayer and multiple layers of atomic thickness. Due to excellent performance, 2D materials represented by graphene have caused great interest from researchers in various fields, such as nano-electronics, sensors, solar cells, composite materials, and so on. In recent years, when graphite was used for liquid phase lubrication, there have been many disadvantages limiting its lubrication properties, such as stable dispersion, fluidity and so on. Therefore, 2D materials have been used as high-performance liquid-phase lubricant additives, which become a perfect entry point for high-performance nano-lubricants and lubrication applications. This review describes the application of 2D materials as additives in the field of liquid-phase lubrication (such as lubricating oil and water lubrication) in terms of experimental content, lubrication performance, and lubrication mechanism. Finally, the challenges and prospects of 2D materials in the lubrication field were also proposed.

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Graphene–Ionic Liquid Based Hybrid Nanomaterials as Novel Lubricant for Low Friction and Wear

Cited by 116 publications

References 18 publications

Influence of tribology on global energy consumption, costs and emissions

Influence of tribology on global energy consumption, costs and emissions

Ionanocarbon Lubricants. The Combination of Ionic Liquids and Carbon Nanophases in Tribology

Research Progress in Application of 2D Materials in Liquid-Phase Lubrication System

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