GRAPHITE NANOPLATELETS, COMPOSITES COMPRISING …
11. A method of preparing a particle dispersion or a composite material, comprising (a) treating graphite particles by a method according to any one of claims 1 to 10, and (b) dispersing the treated graphite particles in a liquid vehicle or matrix material. 12. Method according to claim 11 in which the particles are dispersed in a matrix ...
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US20040224852A1
Drilling fluid systems, graphite particle mixtures, and methods for use thereof including: (a) drilling fluid systems having effective rheology and lubricity properties comprising a suspension of graphite particles having a particle size distribution sufficient to permit greater than 65 wt. % of the graphite particles to pass through a shaker screen having …
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The success story of graphite as a lithium-ion anode …
Fig. 2 (a) Representative XRD (X-ray diffraction) pattern for natural graphite, indicating the presence of hexagonal and rhombohedral graphite structures, with a relatively lower fraction of the latter. (b) Schematic illustration of the layered structure and the resulting presence of basal and edge planes. (c) Exemplary SEM micrograph, indicating the basal …
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New aqueous energy storage devices comprising graphite cathodes, MXene
These results reflect the high stability and reversibility of these systems. Post-mortem photographs of the graphite side taken after 1500 cycles reveal pronounced destruction in the polymeric binder (see SI Fig. 2). Such disintegration can be ascribed to the large volume changes that occurred in the graphite particles during cycling.
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US4533086A
Disclosed is a process for grinding graphite comprising: (1) forming a mixture of graphite and a graphite grinding aid; (2) grinding the mixture of graphite and graphite grinding aid to reduce the size of the graphite; (3) forming an aqueous slurry of the graphite particles, graphite grinding aid and water; (4) adding an amount of …
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Large-format battery anodes comprising silicon particles
Large-scale anodes containing high weight percentages of silicon suitable for use in lithium-ion energy storage devices and batteries, and methods of manufacturing the same, are described. The anode material described herein can include a film cast on a current collector substrate, with the film including a plurality of active material particles and a …
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CA2521749A1
Drilling fluid systems, graphite particle mixtures, and methods for use thereof including: (a) drilling fluid systems having effective rheology and lubricity properties comprising a suspension of graphite particles having a particle size distribution sufficient to permit greater than 65 wt.% of the graphite particles to pass through a shaker screen having a …
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Role of Cr-carbide Coating on Graphite Particles in the
Near-spherical graphite particles (99.0% purity, mean particle size 300 μm) and chromium (Cr) powder (99.9% purity, particle size smaller than 30 μm) were used as carbon and metal sources, respectively, for synthesizing the Cr-carbide coatings. Sodium chloride and potassium chloride (NaCl and KCl, 99.8% purity) were served as a reaction ...
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Drilling fluids comprising sized graphite particles
Drilling fluid systems, graphite particle mixtures, and methods for use thereof including: (a) drilling fluid systems having effective rheology and lubricity properties comprising a suspension of graphite particles having a particle size distribution sufficient to permit greater than 65 wt. % of the graphite particles to pass through a shaker …
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Graphite Particle-Size Induced Morphological and
Our test matrix comprises electrode formulations with four different kinds of graphite and two different Si contents (5 wt% & 20 wt%). We will show how different …
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Graphite Particle-Size Induced Morphological and
Larger graphite particles, which are typically used for negative electrodes, performed rather poorly in graphite–Si electrodes when the Si content reached 20 wt%. In case of Actilion1, ... In electrode blends comprising graphite and Si, graphite takes on the role as both active material and conductive additive. The material requirements for ...
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Interfacial debonding in compacted graphite iron: effect of …
CGI has a complex microstructure, comprising graphite particles of different shapes, sizes and orientations embedded in an iron matrix. As a result of mismatch in coefficients of thermal expansion of constituents, thermal load can result in damage due to interfacial debonding. To evaluate this phenomenon, representative volume elements of …
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Grafoid and Focus Graphite Announce Submission of …
In addition, Focus Graphite announced the grant of 30,000,000 incentive stock options to its directors, officers, employees, and consultants. The options are to purchase up to 30,000,000 Common ...
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CARBON COATED MAGNETIC PARTICLES AND METHODS …
We claim: 1. A composition, comprising: a magnetic material particle comprising an outer surface; and a carbon layer located on the outer surface of the magnetic material particle. 2. The composition of claim 1, wherein the magnetic material particle is an iron particle. 3. The composition of claim 1, wherein the magnetic material particle has an average …
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US7087555B2
Drilling fluid systems, graphite particle mixtures, and methods for use thereof including: (a) drilling fluid systems having effective rheology and lubricity properties comprising a suspension of graphite particles having a particle size distribution sufficient to permit greater than 65 wt. % of the graphite particles to pass through a shaker screen having …
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Drilling fluids comprising sized graphite particles
Drilling fluid systems, graphite particle mixtures, and methods for use thereof including: (a) drilling fluid systems having effective rheology and lubricity properties comprising a suspension of graphite particles having a particle size distribution sufficient to permit greater than 65 wt. % of the graphite particles to pass through a shaker screen having …
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CA3209696A1
The present invention provides a spheroidization method for the manufacture of additive-enhanced spheroidal graphite particles, and their application as lithium-ion battery anode active materials. Particles are comprised of natural crystalline flake graphite in combination with additive such as silicon nanoparticles or synthetic graphite.
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Graphite as anode materials: Fundamental mechanism, …
Natural graphite particles show flake-like morphology (Fig. 3 b) with two different surfaces. The basal planes are generally parallel to the graphene layer and edge planes expose the end face of the graphene layer. ... Kanno et al. built an experimental system comprising a time-of-flight diffractometer to collect and analyze diffraction data ...
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Grafoid and Focus Graphite Announce Submission of …
KINGSTON, ONTARIO, March 1, 2021 – Grafoid Inc. ("GRAFOID") and Focus Graphite Inc. (TSXV: FMS) (the "Company" or "Focus Graphite"), jointly …
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Aluminum carbide formation in Al-graphite composites: In …
Pure Al powder, with a particle size below 44 µm and a purity level of 99.5%, and Gr (natural graphite flakes), with particle sizes below 841 µm and a purity level of 99.9%, were employed as the starting materials. The Al-1%Gr composite, comprising 1% graphite by weight, was prepared using a Spex 8000 M device.
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WHY GRAPHITE ELECTRODES FAIL IN PC SOLUTIONS: AN …
This paper deals with capacity fading mechanisms of graphite electrodes. Three types of graphite particles were used: synthetic flakes, natural flakes and mesocarbon microbeads (MCMB). We used a probe solution, EC-PC/LiClO 4, in which electrodes comprising different types of graphite particles behave very differently from each other. The tools ...
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Location- and Orientation-Dependent Progressive Crack …
For the majority of the analyses in this paper, the graphite comprising the particle was modeled as a plane-stress isotropic elastic material. We have also performed one study in which fully anisotropic diffusion, expansion, and elasticity has been employed in order to observe the effects of anisotropy on our results.
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Less than one weight percent of graphite on the surface of …
Abstract. The surface of Mercury is enriched in carbon compared with the other terrestrial bodies. Up to 4 wt% of carbon in the form of graphite has been invoked to explain its mysteriously low ...
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Computed Tomography of Flake Graphite Ore: Data …
Figure 6 shows the individual graphite particles (Figure 6A), comprising the sample as well as their volumetric distribution (Figure 6B) in 3D. Graphite flakes are aligned and occur mostly disseminated in …
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Tribological Investigations of Nano and Micro-sized Graphite Particles …
Graphite is a well-known solid lubricant (SL) additive widely used both as a standalone SL and also as additive in lubricating oils, greases, composites, etc. Size of the additive particles especially nano-particles (NPs) is a major attribute to the performance properties of a composite, oil, grease, etc. This paper highlights the influence of graphite …
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Behavior of lithiated graphite electrodes comprising silica …
Graphite electrodes comprising silica binder were tested in ethylene carbonate–dimethyl carbonate (EC–DMC), propylene carbonate and tetrahydrofuran solutions. The electrochemical behavior of these electrodes was analyzed using chronopotentiometry, slow-scan rate cyclic voltammetry (SSCV), impedance spectroscopy and potentiostatic …
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EP3054509A1
The present disclosure relates to a secondary graphite particle comprising an initial natural graphite particle of excellent high capacity and output characteristic, aggregated, bonded or assembled with an initial artificial graphite particle of excellent cycle characteristic and swelling characteristic, thus having superior rollability that leads into …
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KR101685832B1
흑연 2차 입자 및 이를 포함하는 리튬 이차전지 {Graphite secondary particles and lithium secondary battery comprising thereof} TECHNICAL FIELD [0001] The present invention relates to a graphite secondary particle and a lithium secondary battery comprising the graphite secondary particle and a lithium secondary battery, 본 발명은 …
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Rechargeable Dual‐Ion Batteries with Graphite as a …
Rechargeable graphite dual-ion batteries (GDIBs) have attracted the attention of electrochemists and material scientists in recent years due to their low cost and high-performance metrics, such as high power density …
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Multiscale dynamics of charging and plating in graphite
The electrochemical cycling profile is shown in Fig. 2, comprising charge at 2 mA cm −2 ... Figure 4j shows that most of the graphite particles have their long axis aligned between 60° to 90 ...
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