supporting information exfoliation mechanism of graphite cathode

SUPPORTING INFORMATION: Insight into the Mechanism of the

SI 1 SUPPORTING INFORMATION: Insight into the Mechanism of the Thermal Reduction of Graphite Oxide: Deuterium-Labeled Graphite Oxide Is the Key Zden ěk Sofer a, *, Ond řej Jankovsk a, Petr Šimek a, David Sedmidubsk a, Ji ř Šturala b, Ji ř Kosina c, Romana Mikšov d,e, Anna Mackov d,e, Martin Mikulics f,g, Martin Pumera h,*

Exfoliation of covalent organic frameworks into MnO2

2021/4/21Exfoliation of quinone-based COFs into large-scale and ultrathin nanosheets MnO 2 /DQTP-COF-NS-3 can be applied as high-performance cathode catalyst DFT study supports the vital role of quinone group in CO 2 reduction reaction Rechargeable Li-CO 2 batteries have been studied extensively as an attractive strategy for simultaneous energy storage and CO 2 fixation to address the global

Micromechanical Exfoliation of Graphene on the Atomistic Scale

The PMMA exfoliation lasts 1.4 ns seconds, the PDMS exfoliation lasts 1.1 ns. The simulations di er in the mechanism of exfoliation. The PDMS is the more uid polymer and rearranges to stay in contact with the graphite as the tapes are pulled apart, giving rise 2

Mechanistic Insight into the Chemical Exfoliation and

nearby Ti atoms (Figure S1 in the Supporting Information). the Y and Z direction for the intercalation of HF via the MAX edges as shown in Figure 1a. Atoms at the left most edge of the MAX (Figure 1b−h) are fixed, and all other atoms are fully relaxed. Exfoliation

Synchronous exfoliation and assembly of graphene on 3D

obtained by the solution-based electrochemical exfoliation with a two-electrode system, using graphite flakes, Ni foam and a mixed solution containing NH 3 H 2O and (NH 4) 2SO 4 (Fig. 1a) as the anode, cathode and electrolyte, respectively. When a direct

Nanomaterials

Graphite and its intercalation compounds have been studied for over 150 years; however, serious scientific investigation on graphene is of rather recent origin, from when Novoselov et al. [] 2004 reported the facile synthesis of single layer/few layer graphene from graphite using mechanical exfoliation from graphite

Eco

Raman spectroscopy provides useful information about the structural properties of carbon materials. 56 The raw Raman spectra of the powdered graphite material and natural graphite flakes in the wavenumber range 100–3200 cm −1 are presented in Fig. 4b and c, respectively., respectively.

Amphiphilic Surface Modification of Hollow Carbon Nanofibers

2018/8/1Amphiphilic Surface Modification of Hollow Carbon Nanofibers for Improved Cycle Life of Lithium Sulfur Batteries Guangyuan Zheng,† Qianfan Zhang,‡ Judy J. Cha,‡ Yuan Yang,‡ Weiyang Li,‡ Zhi Wei Seh,‡ and Yi Cui*,‡, †Department of Chemical Engineering and ‡Department of Materials Science and Engineering, Stanford University, Stanford,

Exploiting the Degradation Mechanism of NCM523inlineGraphic

Table S1 (Supporting Information). Cell assembly 2032-type coin cells (two-electrode configuration[42]) were as-sembled to investigate transition metal (TM) dissolution from the NCM523 cathode and the TM deposition at the graphite anode in Figure 1.

Flexible graphene electrothermal films made from

Graphene nanosheets are facilely prepared by electrochemical exfoliation of graphite in sodium tungstate aqueous solution. Through a filtration-transfer procedure and followed by heat treatment, the graphene nanosheets are deposited on the polyethylene terephthalate substrate to form electrothermal films. The graphene electrothermal films exhibit low square resistance of 159 Ω/sq, high in

Intercalation (chemistry)

In chemistry, intercalation is the reversible inclusion or insertion of a molecule (or ion) into layered materials with layered structures. Examples are found in graphite and transition metal dichalcogenides.[1][2] Model of intercalation of potassium into graphite

Review—Progress of Research on the Preparation of

2020/10/5The exfoliation mechanism is similar to that in two-electrode exfoliation (Fig. 5b). In the first stage of graphite oxide formation, NO 3 as the main method of electrochemical exfoliation to prepare 2D layered materials, can be divided into anode and cathode 52

In

2021/1/2Based on in-situ intercalation polymerization of PANI, graphene/PANI/CuO ternary nanocomposites were synthesized by hydrothermal reaction at 160 C followed by heat treatment at 280 C. The morphology and electromagnetic wave absorption property of as-prepared products were investigated. Result shows that the physical exfoliation of graphite into graphene takes place mainly

Lithium Diffusion in Graphitic Carbon

Supporting Information. The resulting energies were used to fit a cluster expansion, which was employed to calculate the lithium-graphite phase diagram through Monte Carlo simu-lations and benchmarked against experiments.23 The full details of these where.28

Polymer‐Assisted Electrophoretic Synthesis of N‐Doped

To address this problem, a polymer‐assisted electrochemical exfoliation technique of graphite in the presence of an aqueous acidic medium is reported. This simple, cost‐effective, and mass‐scale production approach could open the possibility for the synthesis of high‐quality nitrogen‐doped graphene–polypyrrole (NG‐PPy).

Amphiphilic Surface Modification of Hollow Carbon Nanofibers

2018/8/1discharge profile (Figure S2, Supporting Information) exhibits the typical two-plateau behavior of sulfur cathode. The second plateau is relatively flat, indicating good reaction kinetics between the lithium and sulfur. Figure 1b shows the TEM image of a sulfur

Green production of carbon nanomaterials in molten

2018/3/1Graphite can be exfoliated into various carbon nanostructures in molten LiCl. Fig. 1 shows the microscopic morphology of the graphite feed material and carbon products which can be formed under different processing conditions. Fig. 2 shows the electrochemical cell designed for the molten salt fabrication of different carbon nanostructures at the scale of several tens to grams on a single run.

On the electrochemical exfoliation of graphene materials

slight degree of surface charge and any resulting electrostatically-driven stability is sufficiently masked by the supporting electrolyte.The route as a whole is presented over several investigative stages, probing the intercalation, cathode expansion and with

Simultaneous Production and Functionalization of Boron Nitride Nanosheets by Sugar‐Assisted Mechanochemical Exfoliation

Supporting Information). Surprisingly, the concentration of sucrose-g-BNNSs-12h in H 2O–EtOH can be quite high, up to 36.0 mg g−1 without precipitation after 1 month (Figure S2d, Supporting Information). This exfoliation yield together with the excellent

Amphiphilic Surface Modification of Hollow Carbon Nanofibers

2018/8/1Amphiphilic Surface Modification of Hollow Carbon Nanofibers for Improved Cycle Life of Lithium Sulfur Batteries Guangyuan Zheng,† Qianfan Zhang,‡ Judy J. Cha,‡ Yuan Yang,‡ Weiyang Li,‡ Zhi Wei Seh,‡ and Yi Cui*,‡, †Department of Chemical Engineering and ‡Department of Materials Science and Engineering, Stanford University, Stanford,

On the Role of Transition Metal Salts During

The addition of melamine to the exfoliation solution, which was H 2 SO 4 (aq), also increased the product C:O ratio from ≈16 (without melamine) to 26. 7 The suggested mechanism for the protection of the graphite surface against oxidation was believed to be the 7

Large

BAE ET AL. VOL. 5 NO. 6 4974 – 4980 2011 4974 May 17, 2011 C 2011 American Chemical Society Large-Area Graphene Films by Simple Solution Casting of Edge-Selectively Functionalized Graphite Seo-YoonBae,† In-YupJeon, †JieunYang, NoejungPark, †HyeonSukShin, SungjinPark,‡ RodneyS.Ruoff,

Synthesis of Stacked Graphene

2020/2/26The ID/IG intensity of graphite, SrGO, and SrGO-Sn are 0.27, 1.43, and 1.52, respectively. The increase in ID/IG implies the structural change of graphite including deformation, exfoliation, and disorder of graphite layers. Thus, we suggest that exfoliation of the

A short review on electrochemical exfoliation of graphene

2021/1/3The graphite was fixed as the anode, and then the electrode was switched to the cathode for the electrochemical exfoliation process to produce graphene–SDS suspensions. The mechanism of the intercalation and exfoliation process using the ionic surfactant is generally illustrated in Fig. 1 .

Functionalization of graphene sheets by the diazonium

2017/1/1For electrochemical exfoliation, a graphite foil (7.5 cm 2 cm 0.05 cm (thickness)) used as anode (connected to the positive terminal of a DC power supply) with a Pt mesh (4 cm 2) as cathode, were immersed into the 0.1 M H 2 SO 4 electrolyte. Table 1 presents experimental conditions used for electrochemical exfoliation.

Nanomaterials

Graphite and its intercalation compounds have been studied for over 150 years; however, serious scientific investigation on graphene is of rather recent origin, from when Novoselov et al. [] 2004 reported the facile synthesis of single layer/few layer graphene from graphite using mechanical exfoliation from graphite

Highly Reversible Na‐Intercalation into Graphite

The NIC comprised pre‐sodiated graphite as a negative electrode and commercial activated carbon as a cathode. This fascinating NIC configuration displayed the maximum energy density of 59.93 Wh kg −1 with exceptional cyclability of 5000 cycles at ambient temperature with approximately 98 % retention.

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