• Effect of ball-milling and graphene contents on the

    2017-1-15 · Graphene reinforced copper matrix composites were prepared by ball-milling and hot-press sintering. Graphene is uniformly dispersed into copper matrix after ball-milling and the structure of graphene is relatively complete. Graphene contents significantly affect mechanical properties and fracture mechanisms of the composites.

    Effect of ball milling time on graphene nanosheets

    2019-1-1 · Mechanical ball milling has been the most extensive used method to prepare nanocomposites, because of the simplicity and controllability. At the same time, the production of scalable quantities of high quality graphene nanosheets has become realizable by the shear force of

    Ball‐Mill‐Exfoliated Graphene: Tunable

    2019-4-17 · A simple wet ball-milling method for exfoliating pristine graphite to graphene nanosheets is proposed. The surfactant of cetyltrimethyl ammonium bromide is utilized to greatly improve the exfoliation efficiency of graphene nanosheets. Variation of the ball-milling time is an efficient way to control the size and thickness of graphene nanosheets, as

    Ultrahigh Conductive Graphene Paper Based on

    2017-3-29 · First, large-volume, high-concentration, plane-defect-free, few-layer graphene dispersion is fast produced from graphite at high yield through ball milling. The exfoliated graphene dispersion is further processed into graphene paper through fast filtration,

    One-step preparation of graphene nanosheets via ball

    2016-1-6 · The ball milling of graphite was carried out in a planetary ball-milling machine with four 2500 ml stainless steel jars with dry ice at 150 rpm in the speed of

    Ball-milled sulfur-doped graphene materials contain

    Ball-milling of graphite to obtain graphene materials is one of the many versatile methods to easily obtain bulk quantities. In this work, we show that the graphene materials produced by ball-milling are spontaneously contaminated with metallic impurities

    Exfoliation of graphite by dry ball milling with

    2014-4-30 · Dry ball milling of graphite with cellulose and related polysaccharides was found effective for exfoliation-dispersion of graphene-like carbon. The exfoliation behavior was found to depend strongly on the polymer species; namely, polysaccharides are much more effective than thermoplastic polymers.

    Fabrication of in-situ grown graphene reinforced Cu

    2016-1-14 · Ball-milling is an easy and practicable method, but it introduces many defects into the graphene inevitably, which is also detrimental for its strengthening effect 5, 6, 7, 14.

    Graphene balls for lithium rechargeable batteries with

    2017-11-16 · Here we report a chemical vapor deposition process to grow a graphene–silica assembly, called a graphene ball. Its hierarchical three-dimensional structure with the silicon oxide nanoparticle...

    A ball milling strategy to disperse graphene oxide in cement

    2020-2-27 · A ball milling strategy to disperse graphene oxide in cement New Carbon Materials ( IF 1.761) Pub Date : 2020-02-27, DOI: 10.1016/s1872-5805(19)60032-6 Guo-jian Jing, Zheng-mao Ye, Cheng Li, Jian Cui, Shu-xian Wang, Xin Cheng

    Edge-carboxylated graphene nanosheets via ball milling

    Edge-carboxylated graphene nanosheets via ball milling In-Yup Jeona, Yeon-Ran Shina, Gyung-Joo Sohna, Hyun-Jung Choia, Seo-Yoon Baea, Javeed Mahmooda, Sun-Min Junga, Jeong-Min Seoa, Min-Jung Kima, Dong Wook Changa,b, Liming Daia,c,1, and Jong-Beom Baeka,1 aInterdisciplinary School of Green Energy/Low-dimensional Carbon Materials Center, Ulsan National Institute of Science and

    Ball-Mill-Exfoliated Graphene: Tunable Electrochemistry and

    2019-11-28 · Variation of the ball-milling time is an efficient way to control the size and thickness of graphene nanosheets, as well as the level of edge defects. With an increase of ball-milling time, superior electrochemical reactivity is imparted owing to enlarged active area and increased catalytic ability.

    Preparation of graphene/copper nanocomposites by ball

    2019-7-24 · Graphene-reinforced copper (Gr/Cu) nanocomposites were fabricated by ball milling followed by pressureless vacuum sintering, and were characterized by SEM, TEM, XRD, Raman spectroscopy and mechanical tests. Results indicate that the graphene platelets

    Edge-carboxylated graphene nanosheets via ball

    2012-4-10 · Low-cost, high-yield production of graphene nanosheets (GNs) is essential for practical applications. We have achieved high yield of edge-selectively carboxylated graphite (ECG) by a simple ball milling of pristine graphite in the presence of dry ice. The resultant ECG is highly dispersable in various solvents to self-exfoliate into single- and few-layer (≤ 5 layers) GNs.

    Exfoliation of graphite by dry ball milling with

    2014-4-30 · Dry ball milling of graphite with cellulose and related polysaccharides was found effective for exfoliation-dispersion of graphene-like carbon. The exfoliation behavior was found to depend strongly on the polymer species; namely, polysaccharides are much more effective than thermoplastic polymers. The compression-molded slabs from co-milled powder with cellulose and carboxymethylcellulose

    Nitrogen-doped graphene by ball-milling graphite with

    Nitrogen-doped graphene by ball-milling graphite with melamine for energy conversion and storage To cite this article: Yuhua Xue et al 2015 2D Mater. 2 044001 View the article online for updates and enhancements. Related content Enhancing pyridinic nitrogen level in graphene to promote electrocatalytic activity for oxygen reduction reaction

    Graphene balls for lithium rechargeable batteries with

    2017-11-16 · Xu, J. et al. Edge‐selectively halogenated graphene nanoplatelets (XGnPs, X = Cl, Br, or I) prepared by ball‐milling and used as anode materials for lithium‐ion batteries. Adv. Mater. 26

    Large-Scale Production of Edge-Selectively

    2012-10-30 · Edge-selectively functionalized graphene nanoplatelets (EFGnPs) with different functional groups were efficiently prepared simply by dry ball milling graphite in the presence of hydrogen, carbon dioxide, sulfur trioxide, or carbon dioxide/sulfur trioxide mixture. Upon exposure to air moisture, the resultant hydrogen- (HGnP), carboxylic acid- (CGnP), sulfonic acid- (SGnP), and carboxylic acid

    Chemical synthesis of single‐layer graphene by using

    2018-10-1 · Graphene materials especially single-layer graphene have been identified as a new generation of nanomaterials having various potential applications in material industries. However, the

    Study on Preparation and Characterization of Graphene

    2020-12-12 · calculation of tumbling ball mills and are optimized based on experience [29, 30]. González-Domínguez [31] prepared graphene by planetary ball milling. The raw material ratio is only 25mg, and the ball mill speed is only 100r/min. In Buzaglo’s [32] study, the content of graphite was only 36mg. In summary, these two ball milling methods have

    A ball milling strategy to disperse graphene oxide in cement

    2020-2-27 · A ball milling strategy to disperse graphene oxide in cement New Carbon Materials ( IF 1.761) Pub Date : 2020-02-27, DOI: 10.1016/s1872-5805(19)60032-6 Guo-jian Jing, Zheng-mao Ye, Cheng Li, Jian Cui, Shu-xian Wang, Xin Cheng

    Edge-carboxylated graphene nanosheets via ball milling

    Edge-carboxylated graphene nanosheets via ball milling In-Yup Jeona, Yeon-Ran Shina, Gyung-Joo Sohna, Hyun-Jung Choia, Seo-Yoon Baea, Javeed Mahmooda, Sun-Min Junga, Jeong-Min Seoa, Min-Jung Kima, Dong Wook Changa,b, Liming Daia,c,1, and Jong-Beom Baeka,1 aInterdisciplinary School of Green Energy/Low-dimensional Carbon Materials Center, Ulsan National Institute of Science and

    Effect of ball-milling and graphene contents on the

    Abstract Graphene nanosheets (GNSs) reinforced pure copper matrix composites were prepared by ball-milling and hot-press sintering. The morphologies and structures of GNSs-Cu powders were studied after ball-milling for different time. The effects of the GNSs content on the microstructures, mechanical properties and fracture mechanisms of the composites were also investigated.

    Ultrahigh Conductive Graphene Paper Based on

    2.1. Ball-Milling Exfoliation of Graphite into Graphene Graphite was directly exfoliated into graphene in NMP through ball milling with a large zirconium oxide (ZrO 2) ball (2 mm diameter) and small ZrO 2 ball (0.2 mm diameter). NMP was selected as a solvent because its surface energy (40.7 mN m−1) is close to that of graphene (54.8 mN m−1

    One-step ball milling-prepared nano Fe

    2019-4-23 · Here, novel Fe-N-doped graphene is successfully synthesized via a one-step in situ ball milling method. Pristine graphite, ball milling graphene, N-doped graphene and Fe-N-doped graphene are applied in air cathodes, and enhanced performance is observed in microbial fuel cells with graphene

    Graphene balls for lithium rechargeable batteries with

    2017-11-16 · Xu, J. et al. Edge‐selectively halogenated graphene nanoplatelets (XGnPs, X = Cl, Br, or I) prepared by ball‐milling and used as anode materials for lithium‐ion batteries. Adv. Mater. 26

    An effective route to produce few-layer graphene

    2013-6-11 · In this paper, a simple, cost effective, and scalable process for production of few-layer graphene is reported by combining ball milling with exfoliants. The graphene was derived from low-cost graphite, which was subjected to high-energy ball milling in an aqueous medium containing a strong exfoliant (1-pyrenecarboxylic acid) and a common solvent methanol.

    Large-Scale Production of Edge-Selectively

    2012-10-30 · Edge-selectively functionalized graphene nanoplatelets (EFGnPs) with different functional groups were efficiently prepared simply by dry ball milling graphite in the presence of hydrogen, carbon dioxide, sulfur trioxide, or carbon dioxide/sulfur trioxide mixture. Upon exposure to air moisture, the resultant hydrogen- (HGnP), carboxylic acid- (CGnP), sulfonic acid- (SGnP), and carboxylic acid

    Chemical synthesis of single‐layer graphene by using

    2018-10-1 · Graphene materials especially single-layer graphene have been identified as a new generation of nanomaterials having various potential applications in material industries. However, the

    Study on Preparation and Characterization of Graphene

    2020-12-12 · calculation of tumbling ball mills and are optimized based on experience [29, 30]. González-Domínguez [31] prepared graphene by planetary ball milling. The raw material ratio is only 25mg, and the ball mill speed is only 100r/min. In Buzaglo’s [32] study, the content of graphite was only 36mg. In summary, these two ball milling methods have

    [email protected]/Graphene Nanosheets Composite: Ball Milling

    2018-1-9 · During ball milling process, the size of Si nanoparticles will decrease, and the layer of EG can be peeled off to thin multilayers. Electrochemical tests reveal that the [email protected] x /GNS nanocomposites show enhanced cycling stability, high reversible capacity, and rate capability, even with high content of active materials of 80% and without

    One-step preparation of graphene nanosheets via ball

    An improved method for mass production of good-quality graphene nanosheets (GNs) via ball milling pristine graphite with dry ice is presented. We also report the enhanced performance of these GNs as working electrode in lithium-ion batteries (LIBs). In this improved method, the decrease of necessary ball milling time from 48 to 24 h and the increase of Brunauer–Emmett–Teller surface area

    Tuning Optical Properties of Graphene Oxide under

    2016-4-20 · We report on the effect of compressive stress on the optical properties of graphene oxide using a wet ball milling technique. For this purpose, graphene oxide was prepared using the modified Hummer’s method and subsequently processed with wet ball milling. X-ray diffraction a infers

    In situ synthesis of thermoplastic polyurethane/graphene

    2019-8-28 · Thermoplastic polyurethane/graphene nanoplatelets conductive composite was in situ synthesised by ball milling at room temperature, using polytetramethylene glycol as soft segment, 4-methyl-m-phenylene diisocyanate as hard segment, 1,4-butanediol as chain-extending agents, graphene nanoplatelets as conductive filler.

    Chemical synthesis of single‐layer graphene by using ball

    2018-10-1 · Graphene materials especially single-layer graphene have been identified as a new generation of nanomaterials having various potential applications in material industries. However, the

    An effective route to produce few-layer graphene using

    2013-6-11 · In this paper, a simple, cost effective, and scalable process for production of few-layer graphene is reported by combining ball milling with exfoliants. The graphene was derived from low-cost graphite, which was subjected to high-energy ball milling in an aqueous medium containing a strong exfoliant (1-pyrenecarboxylic acid) and a common solvent methanol.

    赵卫峰-西安工业大学材料与化工学院 XATU

    2021-5-14 · One-pot in situ ball milling preparation of polymer/graphene nanocomposites[J], Journal of Applied Polymer Science, 2012, 125(5):3899-3903.(SCI) 10.Hang Wu, Weifeng Zhao, and Guohua Chen. One-step in situ ball milling synthesis of polymer-functionalized

    High energy ball milling process for nanomaterial synthesis

    2021-3-8 · For all nanocrystalline materials prepared by high-energy ball milling synthesis route, surface and interface contamination is a major concern. In particular, mechanical attributed contamination by the milling tools (Fe or WC) as well as ambient gas (trace impurities such as O 2, N 2 in rare gases) can be problems for high-energy ball milling

    How to Perform Dry Exfoliation on Graphene

    Dry milling is another alternative to produce graphene. Graphite layers can be shifted by ball milling a mixture of graphite and chemically inert water-soluble inorganic salts. The ensuing water washing and sonication of the milling products can result in the production of graphene powders.

 

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