Iron metal induced deoxygenation of graphite oxide nanosheets-insights on the capacitive properties of binder-free electrodes

Kumar, Nanjundan Ashok; Togami, Makoto; Oishi, Yudai; Tominaga, Masato; Takafuji, Makoto; Ihara, Hirotaka

doi:10.1039/c4ra15901b

Cited by 7 publications

(10 citation statements)

References 38 publications

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“…The extent of reduction of GO can be clearly observed from Figure b from the randomly corrugated, disordered and crumpled or folded sheets with minimal aggregation. This type of corrugated structure could reduce sheet restacking to a greater extent compared to that of the rGOs prepared via other wet chemical methods that generally tend to aggregate, thus accruing its potential for electrical applications. The HR‐TEM image of rGO is shown in Figure c.…”

Section: Resultsmentioning

confidence: 99%

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Reduced Graphene Oxide (rGO) Prepared by Metal‐Induced Reduction of Graphite Oxide: Improved Conductive Behavior of a Poly(methyl methacrylate) (PMMA)/rGO Composite

et al. 2019

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An approach for preparing highly conductive poly(methyl methacrylate)–reduced graphene oxide (PMMA/rGO) composites by in situ polymerization of methyl methacrylate (MMA) monomer in the presence of iron metal induced deoxygenated rGO is reported. The obtained PMMA/rGO exhibited excellent electrical properties with a percolation threshold as low as 0.1 wt.% and electrical conductivity of 14 S/m at only 0.8 wt.% rGO loading. Moreover, with only 0.4 wt.% rGO content, the glass transition temperature (Tg) of the prepared PMMA/rGO composite was enhanced by 16°C which corresponds to 17% improvement when compared to that of the neat PMMA. Furthermore, tensile strength increased by 26% as compared to that of the neat PMMA.

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Section: Resultsmentioning

confidence: 99%

“…Previously iron metal powder was employed as an effective reductant to reduce graphite oxide. The resulting rGO was found to have good aspect ratio and showed pronounced electrochemical activity as an electrode material for supercapacitors …”

Section: Introductionmentioning

confidence: 99%

Reduced Graphene Oxide (rGO) Prepared by Metal‐Induced Reduction of Graphite Oxide: Improved Conductive Behavior of a Poly(methyl methacrylate) (PMMA)/rGO Composite

et al. 2019

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“…GO was deoxygenated using metal salt, tin (II) chloride, [26] and a metal powder, iron (Fe) [27] to yield Sn-RGO and Fe-RGO, respectively.…”

Section: Methodsmentioning

confidence: 99%

“…Experimental results showed that the RGO anode can deliver a specific discharge capacity of 272 mA h g -1 at 50 mA g -1 (second cycle) with a good cycling stability and a superior rate capability. For comparison, we also prepared RGO using iron (Fe) metal powder as a reducing agent [27]. Both experimental and computer-simulation data indicate that the energy storage mechanism is surface-driven, where reactions between Na + and the defects on the surface of RGOs advantageously influence the interfacial activity between electrode and electrolyte.…”

Section: Introductionmentioning

confidence: 99%

Sodium ion storage in reduced graphene oxide

Kumar

Gaddam

Varanasi

et al. 2016

Electrochimica Acta

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Sodium ion storage in reduced graphene oxide, Electrochimica Acta http://dx.doi.org/10. 1016/j.electacta.2016.08.058 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. AbstractThe performance of few-layered metal-reduced graphene oxide (RGO) as a negative electrode material in sodium-ion battery was investigated. Experimental and simulation results indicated that the as-prepared RGO with a large interlayer spacing and disordered structure enabled significant sodium-ion storage, leading to a high discharge capacity. The strong surface driven interactions between sodium ions and oxygen-containing groups and/or defect sites led to a high rate performance and cycling stability. The RGO anode delivered a discharge capacity of 272 mA h g -1 at a current density of 50 mA g -1 , a good cycling stability over 300 cycles and a superior rate capability. The present work provides new insights into optimizing RGOs for high-performance and low-cost sodium-ion batteries.

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“…Only one prominent C1s peak was observed at 284.8 eV suggesting the sp 2 graphitic nature of the sample. domains during reduction and increased graphitization [14,16].…”

Section: Electrode Preparation and Electrochemical Measurementsmentioning

confidence: 99%

Lithium-storage Properties of Gallic Acid-Reduced Graphene Oxide and Silicon-Graphene Composites

Zhang

et al. 2016

Electrochimica Acta

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Graphene oxide (GO) was de-oxygenated using gallic acid under mild conditions to prepare reduced graphene oxide (RGO). The resultant RGO showed a lithium-ion storage capacity of 1280 mA h g -1 at a current density of 200 mA g -1 after 350 cycles when used as an anode for lithium ion batteries. The RGO was further used to stabilize silicon (Si) nanoparticles to prepare silicon-graphene composite electrode materials. Experimental results showed that a composite electrode prepared with a mass ratio of Si:GO = 1:2 exhibited the best lithium ion storage performance.

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Iron metal induced deoxygenation of graphite oxide nanosheets-insights on the capacitive properties of binder-free electrodes

Abstract: The capacitive behaviour of iron reduced graphite oxide in alkaline media is reported.

Cited by 7 publications

References 38 publications

Reduced Graphene Oxide (rGO) Prepared by Metal‐Induced Reduction of Graphite Oxide: Improved Conductive Behavior of a Poly(methyl methacrylate) (PMMA)/rGO Composite

Reduced Graphene Oxide (rGO) Prepared by Metal‐Induced Reduction of Graphite Oxide: Improved Conductive Behavior of a Poly(methyl methacrylate) (PMMA)/rGO Composite

Sodium ion storage in reduced graphene oxide

Lithium-storage Properties of Gallic Acid-Reduced Graphene Oxide and Silicon-Graphene Composites

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