Recent advancements of metal oxides/Nitrogen-doped graphene nanocomposites for supercapacitor electrode materials

Yadav, Sarita; Devi, Ambika

doi:10.1016/j.est.2020.101486

Cited by 99 publications

(31 citation statements)

References 130 publications

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“…Different metal oxides like TiO 2 , ZnO, Fe 2 O 3 , CuO, MnO 2 , RuO 2 , NiO, V 2 O 5 , or Co 3 O 4 , with varied nanostructures (nanoparticles, nanorods, nanofibers, platelets and flower-like) [ 37 , 38 , 39 ] are examples of materials that have been used for studying the pseudocapacitive capabilities of TMO. Blends with graphene or GO sheets are often carried out by hydrothermal synthesis, allowing TMO nanoparticles to clamp to graphene defective sites, functional groups and wrinkles.…”

Section: Ceramic/graphene Composites Used In Energy Production and Storagementioning

confidence: 99%

Applications of Ceramic/Graphene Composites and Hybrids

et al. 2021

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Research activity on ceramic/graphene composites and hybrids has increased dramatically in the last decade. In this review, we provide an overview of recent contributions involving ceramics, graphene, and graphene-related materials (GRM, i.e., graphene oxide, reduced graphene oxide, and graphene nanoplatelets) with a primary focus on applications. We have adopted a broad scope of the term ceramics, therefore including some applications of GRM with certain metal oxides and cement-based matrices in the review. Applications of ceramic/graphene hybrids and composites cover many different areas, in particular, energy production and storage (batteries, supercapacitors, solar and fuel cells), energy harvesting, sensors and biosensors, electromagnetic interference shielding, biomaterials, thermal management (heat dissipation and heat conduction functions), engineering components, catalysts, etc. A section on ceramic/GRM composites processed by additive manufacturing methods is included due to their industrial potential and waste reduction capability. All these applications of ceramic/graphene composites and hybrids are listed and mentioned in the present review, ending with the authors’ outlook of those that seem most promising, based on the research efforts carried out in this field.

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Section: Ceramic/graphene Composites Used In Energy Production and Storagementioning

confidence: 99%

Applications of Ceramic/Graphene Composites and Hybrids

et al. 2021

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“…It owns numerous obvious shapes in all four dimensions as quantum dots, wires (one dimensional), films (two dimensional), and monoliths (three dimensional). Further to the four-dimensional self-healing structure (Yadav and Devi 2020).…”

Section: Graphene-based Nanocomposites For Supercapacitor Applicationsmentioning

confidence: 99%

“…Finally, quaternary nitrogen atoms that replace C atoms in the hexagonal ring. Among these N-types, pyrrolic N appears a sp 3 hybridized while the other two types appear sp 2 hybridized (Yadav and Devi 2020). The N-graphene displays various properties compared with pure graphene.…”

Section: Graphene-based Nanocomposites For Supercapacitor Applicationsmentioning

confidence: 99%

Advanced materials and technologies for supercapacitors used in energy conversion and storage: a review

et al. 2020

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Supercapacitors are increasingly used for energy conversion and storage systems in sustainable nanotechnologies. Graphite is a conventional electrode utilized in Li-ion-based batteries, yet its specific capacitance of 372 mA h g −1 is not adequate for supercapacitor applications. Interest in supercapacitors is due to their high-energy capacity, storage for a shorter period and longer lifetime. This review compares the following materials used to fabricate supercapacitors: spinel ferrites, e.g., MFe 2 O 4 , MMoO 4 and MCo 2 O 4 where M denotes a transition metal ion; perovskite oxides; transition metals sulfides; carbon materials; and conducting polymers. The application window of perovskite can be controlled by cations in sublattice sites. Cations increase the specific capacitance because cations possess large orbital valence electrons which grow the oxygen vacancies. Electrodes made of transition metal sulfides, e.g., ZnCo 2 S 4 , display a high specific capacitance of 1269 F g −1 , which is four times higher than those of transition metals oxides, e.g., Zn-Co ferrite, of 296 F g −1. This is explained by the low charge-transfer resistance and the high ion diffusion rate of transition metals sulfides. Composites made of magnetic oxides or transition metal sulfides with conducting polymers or carbon materials have the highest capacitance activity and cyclic stability. This is attributed to oxygen and sulfur active sites which foster electrolyte penetration during cycling, and, in turn, create new active sites.

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“…However, if the electrical energy converted by the above energy cannot be used in time, the excess electrical energy must be stored with the energy storage devices [3]. Therefore, it is an important research focus for the current scientific researchers to develop the energy storage devices with stable properties [4].…”

Section: Introductionmentioning

confidence: 99%

One−Step Synthesis of Popcorn−Carbon/Co3O4 Composites as High−Performance Supercapacitor Electrodes

Wang

Zhang

et al. 2022

Crystals

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In this study, a novel assisted liquid−phase plasma electrolysis was developed to realize one−step synthesis of popcorn biomass−derived porous carbon/cobalt tetroxide (popcorn−carbon/Co3O4) composites, effectively improving the structural stability and conductivity of Co3O4. The phase structure, morphologies, chemical composition, and weight ratio of the as−prepared popcorn−carbon/Co3O4 composites were systematically analyzed. The results of X−ray diffraction (XRD), Raman spectrometer, Fourier infrared spectrometer (FTIR), X−ray photoelectron spectrometer (XPS), and thermogravimetry analyzer (TG) proved the synthesis of the popcorn−carbon/Co3O4 composites. Co3O4 nanoparticles were distributed relatively uniformly on the popcorn−carbon surface. The electrochemical properties of the popcorn−carbon/Co3O4 composite electrode materials were analyzed for exploring the influence of different Co/C ratios on the electrochemical properties of composites. The results showed that the popcorn−carbon/Co3O4 composite electrode materials prepared under 200:1 mass ratio of Co(NO3)2·6H2O and popcorn−carbon possessed a specific capacitance and specific capacity of almost 1264 F/g (594 C/g) at a current density of 1 A/g, exhibiting a better electrochemical property. The efficient, fast, and novel assisted liquid−phase plasma electrolysis provides a new method for the preparation of composite electrode materials on the supercapacitors.

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Recent advancements of metal oxides/Nitrogen-doped graphene nanocomposites for supercapacitor electrode materials

Cited by 99 publications

References 130 publications

Applications of Ceramic/Graphene Composites and Hybrids

Applications of Ceramic/Graphene Composites and Hybrids

Advanced materials and technologies for supercapacitors used in energy conversion and storage: a review

One−Step Synthesis of Popcorn−Carbon/Co3O4 Composites as High−Performance Supercapacitor Electrodes

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