Graphite Intercalation Compounds and Applications

Enoki, Toshiaki; Endo, M.; Suzuki, Masatsugu

doi:10.1093/oso/9780195128277.001.0001

Cited by 241 publications

(221 citation statements)

References 0 publications

Supporting

Mentioning

199

Contrasting

Unclassified

Order By: Relevance

“…Secondly, defective sites at the edges or grain boundaries open up due to intercalation by potassium and solvated SO 4 2− . This process leads to the release of gaseous H 2 causing expansion of the interlayer distance of CNTs 29 .…”

Section: Resultsmentioning

confidence: 99%

Counter-ion Dependent, Longitudinal Unzipping of Multi-Walled Carbon Nanotubes to Highly Conductive and Transparent Graphene Nanoribbons

Shinde

Majumder

Pillai

2014

Sci Rep

View full text Add to dashboard Cite

Here we report for the first time, a simple hydrothermal approach for the bulk production of highly conductive and transparent graphene nanoribbons (GNRs) using several counter ions from K2SO4, KNO3, KOH and H2SO4 in aqueous media, where, selective intercalation followed by exfoliation gives highly conducting GNRs with over 80% yield. In these experiments, sulfate and nitrate ions act as a co-intercalant along with potassium ions resulting into exfoliation of multi-walled carbon nanotubes (MWCNTs) in an effective manner. The striking similarity of experimental results in KOH and H2SO4 that demonstrates partially damaged MWCNTs, implies that no individual K+, SO42− ion plays a key role in unwrapping of MWCNTs, rather this process is largely effective in the presence of both cations and anions working in a cooperative manner. The GNRs can be used for preparing conductive 16 kΩsq−1, transparent (82%) and flexible thin films using low cost fabrication method.

show abstract

Section: Resultsmentioning

confidence: 99%

Counter-ion Dependent, Longitudinal Unzipping of Multi-Walled Carbon Nanotubes to Highly Conductive and Transparent Graphene Nanoribbons

Shinde

Majumder

Pillai

2014

Sci Rep

View full text Add to dashboard Cite

show abstract

“…Normally, lithium (i.e., Li þ and 1 e À ) intercalates into graphite in stages. [1][2][3][4] As can be expected, this process is limited by diffusion and kinetics. There is a limit to the amount of lithium that can enter the graphite structure, depending on time and temperature.…”

Section: Introductionmentioning

confidence: 99%

Effect of Anode Porosity and Temperature on the Performance and Lithium Plating During Fast‐Charging of Lithium‐Ion Cells

et al. 2020

View full text Add to dashboard Cite

Twenty-four single-layer %32 mAh pouch cells are tested to determine the effect of electrode porosity on lithium plating. Twelve cells contain a graphite electrode that is 26% porous, and 47% for the other twelve. The cells are cycled using a 6-C charge and a C/2 discharge protocol at temperatures in the range of 20-50 C. A macro-homogeneous electrochemical model and microstructure analysis tool set are used to help interpret experimental observations for the effect of anode porosity and ambient temperature on fast-charging performance. Comparison between the two also highlights gaps in current theoretical understanding that need to be addressed. In post-test examination, lithium plating is seen in all cells, regardless of porosity. Elevated temperature is shown to reduce the amount of lithium plating and improve initial fast-charge capacity, but also changes the rate of other, less well-understood degradation mechanisms. Apparent kinetic rate laws, At þ Bt 1/2 , where A and B are constants, can be fit to most of the capacity loss and resistance increase data. The relative magnitudes of A and B change with temperature and porosity. The capacity loss data at 50 C from the high-porosity cells are fit by a logistics rate law.

show abstract

“…Moreover, owing to its semimetallic properties, graphene works well as both a reducing and a oxidizing agent when developing graphene oxide (GO) and reduced graphene oxide (rGO) (Figure 1f,g), depending on the available chemical reactions. [ 97,98 ] Thus, GO, which is an important derivative of graphene, exhibits oxygen‐containing functional groups, such as carbonyl, carboxyl, epoxy, and hydroxyl groups. Such functional groups are typically located at the edges and basal planes of GO sheets.…”

Section: Physicochemical Properties Of Graphene‐based Materialsmentioning

confidence: 99%

Graphene‐Based Advanced Membrane Applications in Organic Solvent Nanofiltration

Nie

Chuah

Bae

et al. 2020

Adv Funct Materials

View full text Add to dashboard Cite

Owing to the increasing need to mitigate excessive organic solvent waste, the efficient separation and recovery of organic solvents have received major research attention in recent years. The membrane‐based organic solvent nanofiltration (OSN) process has demonstrated its feasibility in addressing this problem with low energy costs, compared to conventional separation techniques, such as adsorption, liquid–liquid extraction, and solvent evaporation. Recently, membranes made of 2D graphene‐based materials have shown great promise because they attain high solvent flux and solute rejection using easy processing methods. Thus, this paper focuses on state‐of‐the‐art studies of graphene‐based membranes used in OSN processes, which include syntheses, characterizations, performance evaluations, membrane fouling, and simulation studies, in combination with the development of the “upper‐bound” line to indicate the performance of graphene‐based membranes. In this paper, critical challenges involved in the development of graphene‐based membranes are also focused on and discussed to map out the future directions of these membranes in industrial OSN processes. In addition to OSN, this paper pertains to a broader audience in other separation processes, particularly in the fields of gas separation and water treatment.

show abstract

Graphite Intercalation Compounds and Applications

Cited by 241 publications

References 0 publications

Counter-ion Dependent, Longitudinal Unzipping of Multi-Walled Carbon Nanotubes to Highly Conductive and Transparent Graphene Nanoribbons

Counter-ion Dependent, Longitudinal Unzipping of Multi-Walled Carbon Nanotubes to Highly Conductive and Transparent Graphene Nanoribbons

Effect of Anode Porosity and Temperature on the Performance and Lithium Plating During Fast‐Charging of Lithium‐Ion Cells

Graphene‐Based Advanced Membrane Applications in Organic Solvent Nanofiltration

Contact Info

Product

Resources

About