Fe@Ag nanoparticles decorated reduced graphene oxide as ultrahigh capacity anode material for lithium-ion battery

Atar, Necip; Eren, Tanju; Yola, Mehmet Lütfi; Gerengi, Hüsnü; Wang, Shaobin

doi:10.1007/s11581-015-1520-1

Cited by 65 publications

(24 citation statements)

References 57 publications

(58 reference statements)

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“…Graphene, a two-dimensional single layer crystal of sp 2 -hydridized carbon atoms has attracted much attentions as an electrode material due to its spectacular physical, chemical, and electrical properties [1]. More and more sensors, biosensing devices, supercapacitors and batteries based on graphene [2], metallic and bimetallic nanoparticles decorated graphene oxide or graphene have been developed [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19]. Up to now, chemically reduced graphene oxide (CRGO) has been widely used to fabricate graphene electrodes [20].…”

Section: Introductionmentioning

confidence: 99%

Effect of morphology and defect density on electron transfer of electrochemically reduced graphene oxide

Zhang

Wang

2016

Applied Surface Science

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Electrochemically reduced graphene oxide (ERGO) is widely used to construct electrochemical sensors. Understanding the electron transfer behavior of ERGO is essential for its electrode material applications. In this paper, different morphologies of ERGO were prepared via two different methods. Compared to ERGO/GCEs prepared by electrochemical reduction of pre-deposited GO, more exposed edge planes of ERGO are observed on the surface of ERGO-GCE that was constructed by electrophoretic deposition of GO. The defect densities of ERGO were controlled by tuning the mass or concentration of GO. The electron transfer kinetics (k 0 ) of GCE with different ERGOs was comparatively investigated. Owing to increased surface areas and decreased defect density, the k 0 values of ERGO/GCE initially increase and then decrease with incrementing of GO mass. When the morphology and surface real areas of ERGO-GCE are the same, an increased defect density induces an accelerated electron transfer rate. k 0 valuesof ERGO-GCEs are about 1 order of magnitude higher than those of ERGO/GCEs due to the difference in the amount of edge planes. This work demonstrates that both defect densities and edge planes of ERGO play crucial roles in electron transfer kinetics.

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Section: Introductionmentioning

confidence: 99%

Effect of morphology and defect density on electron transfer of electrochemically reduced graphene oxide

Zhang

Wang

2016

Applied Surface Science

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“…A spin energy separation of 5.95 eV between Ag 3d 5/2 and Ag 3d 3/2 is attributed to formation of the zero valence metallic state. 46,47 Electrochemical impedance spectroscopy (EIS) is also an efficient tool for studying the interface properties of surface-modied electrodes. The charge-transfer resistance at electrode surface is equal to the semicircle diameter of EIS and can be used to describe the interface properties of the electrode.…”

Section: Resultsmentioning

confidence: 99%

Ag nanoparticles supported on nickel foam: a flexible 3D electrode for methanol electrocatalytic oxidation

Cheng

Guo

et al. 2017

RSC Adv.

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“… investigated a nanohybrid based on gold nanoparticles on polyoxometalate/rGO for the detection of triclosan. In another work, Fe@Ag nanoparticles/2‐aminoethanethiol functionalized rGO and AuNPs supported on rGO has been reported for lithium‐ion battery. Simultaneous determination of flavonoids in wine samples was performed using a RuNPs and calix (4) amidocrown‐5 and rGO modified a glassy carbon electrode .…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Reduced Graphene Oxide Modified with Antimony and Copper Nanoparticles for Levofloxacin Oxidation

2018

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This work presents, for the first time, the oxidation mechanism of levofloxacin combining electrochemical experiments and molecular modelling techniques. Levofloxacin is one of the most widely used antibiotics in the world. The detection of this antibiotic is important, because it cannot be fully assimilated by the human organism, therefore levofloxacin is considerate a hazardous pollutant for environment. Sensors based on reduced graphene oxide (rGO) modified with antimony and copper nanoparticles (NPs) were synthesized, characterized and evaluated for the electrochemical detection of the levofloxacin. The morphological and electrochemical characterization of the composites confirmed that the rGO was modified with the metallic nanoparticles. Molecular modelling studies were performed applying Density Functional Theory (DFT) approach, which indicated that the mechanism of levofloxacin oxidation is given by the loss of two electrons: one from N14 atom and other from C13 atom of the levofloxacin molecule. The glassy carbon electrode (GCE) modified with the SbNPs/rGO and CuNPs/rGO composites were evaluated for the determination of levofloxacin using differential pulse voltammetry (DPV) and achieved detection limit of 4.1×10−8 mol L−1 and 1.7×10−8 mol L−1, respectively, presenting as alternative composites to be used in the analysis of antibiotics.

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Fe@Ag nanoparticles decorated reduced graphene oxide as ultrahigh capacity anode material for lithium-ion battery

Cited by 65 publications

References 57 publications

Effect of morphology and defect density on electron transfer of electrochemically reduced graphene oxide

Effect of morphology and defect density on electron transfer of electrochemically reduced graphene oxide

Ag nanoparticles supported on nickel foam: a flexible 3D electrode for methanol electrocatalytic oxidation

Evaluation of Reduced Graphene Oxide Modified with Antimony and Copper Nanoparticles for Levofloxacin Oxidation

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