Thermally reduced pillared GO with precisely defined slit pore size

Nordenström, Andreas; Iakunkov, Artem; Sun, Jinhua; Talyzin, Alexandr V.

doi:10.1039/d0ra00067a

Cited by 7 publications

(6 citation statements)

References 56 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[201][202][203] Solvothermal reactions in alcohols under elevated conditions are also commonly used for the synthesis of various pillared GO materials 204 and graphene oxide frameworks. 122,[205][206][207][208] Swelling is an important step in these reactions since it expands the GO lattice to allow reactive molecules and ions to access the planar surfaces of graphene oxide sheets. Most of the reactions are performed in ethanol and methanol as the most common solvents which provide an increase in the inter-layer distance by 3-8 Å depending on the type of graphite oxide.…”

Section: Swelling Of Graphite Oxide In Solvents Other Than Watermentioning

confidence: 99%

Swelling properties of graphite oxides and graphene oxide multilayered materials

Iakunkov

Talyzin

2020

Nanoscale

Self Cite

View full text Add to dashboard Cite

show abstract

Section: Swelling Of Graphite Oxide In Solvents Other Than Watermentioning

confidence: 99%

Swelling properties of graphite oxides and graphene oxide multilayered materials

Iakunkov

Talyzin

2020

Nanoscale

Self Cite

View full text Add to dashboard Cite

show abstract

“…The influence of annealing temperature on the membrane structure and the electrochemical performance is investigated (Figure S6), and the optimal treatment temperature of 400 °C is chosen. The regularized interlayer structure can be effectively preserved during thermal treatment, , which is beneficial for electrolyte penetration and ion migration . The influence of the spin regularization cycles on the electrochemical performance of the 2L@GO- x membranes is shown in Figure .…”

Section: Resultsmentioning

confidence: 99%

Centrifugal Force Regularized Laponite@Graphene Hybrid Membranes with Ordered Interlayer Mass Transfer Channels and High Structural Stability for High-Rate Supercapacitors

Peng

Zhang

Zheng

et al. 2021

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

Development of graphene-based membrane electrodes with high electron and charge transfer capability can meet the increasing requirement for high-rate energy storage devices. Herein, we demonstrate a novel spin regularization strategy to prepare regularized graphene oxide (GO) membranes with uniform interlayer spacing for high-performance electrodes. The outer stretching forces on the radial direction together with the inner electrostatic interaction can form smoother GO flakes and 2D interlayer channels. The positively/negatively charged laponites embedded between the interlayer or at the edges of the GO flakes can enhance the stability of the channel structure, thus further promoting the mass transfer efficiency. Moreover, the membranes with ordered and stable laminar structures reveal high mechanical strength and water stability. Therefore, the as-prepared 2L@GO-10 membrane with regular interlayer channels exhibits a high gravimetric capacitance (406.5 F g–1 at 0.5 A g–1) and rate capability (53% capacitance retention from 0.5 to 100 A g–1) as well as robust cyclic stability (95% retention after 20,000 cycles). Additionally, the multiple membrane stacked electrode also exhibits high energy storage capacity.

show abstract

“…34 The thermal reduction of GO results in the removal of oxygen-containing functional groups from the GO, which produces pores responsible for the increased SSA. 35,36 Thus, the increase in SSA with base temperature suggests that the degree of reduction was increased with the increasing base temperature.…”

Section: Self-propagating Reduction Of Go Filmmentioning

confidence: 99%

Controllable self‐propagating reduction of graphene oxide films for energy‐efficient fabrication

Tran

Khandelwal

Lee

et al. 2021

Intl J of Energy Research

View full text Add to dashboard Cite

The reduction of graphene oxide (GO) generally involves the use of chemical agents or high-temperature processes, raising concerns about safety, environment, and energy consumption issues. While self-propagating reduction of GO films was observed to produce functional rGO, potentially mitigating these issues, its process control has not yet been extensively explored. This study proposes a controllable self-propagating reduction of GO films by adjusting the base temperature of the films within low values (50 C-90 C). For understanding the reduction mechanism, the speed and peak temperature of the moving reduction front were measured in real-time, and a heat transfer model was proposed to explain the self-propagating reduction based on the observed reduction kinetics. When used for binder-free supercapacitor electrodes, the rGO films exhibited competitive specific capacitance (112 F/g) and excellent capacitance retention (94%) after 10 000 cycles. This study opens a new avenue for efficiently exploiting the self-propagating reduction of GO films to produce high-quality rGO at a minimal energy cost.

show abstract

Thermally reduced pillared GO with precisely defined slit pore size

Abstract: The porous structure of tetrakis(4-aminophenyl)methane (TKAM)-pillared graphene oxide preserves after thermal reduction providing rare example of true pillared reduced GO material with precise slit pore size and sizable surface area.

Cited by 7 publications

References 56 publications

Swelling properties of graphite oxides and graphene oxide multilayered materials

Swelling properties of graphite oxides and graphene oxide multilayered materials

Centrifugal Force Regularized Laponite@Graphene Hybrid Membranes with Ordered Interlayer Mass Transfer Channels and High Structural Stability for High-Rate Supercapacitors

Controllable self‐propagating reduction of graphene oxide films for energy‐efficient fabrication

Contact Info

Product

Resources

About