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Inorganics
Special Issues
Graphene and Its Composites for Energy Storage Applications
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Graphene and Its Composites for Energy Storage Applications

A special issue of Inorganics (ISSN 2304-6740). This special issue belongs to the section "Inorganic Materials".

Deadline for manuscript submissions: closed (31 August 2023) | Viewed by 3621

Special Issue Editors

Dr. Fan Zhang

E-Mail Website
Guest Editor
Advanced Energy Storage Technology Research Center , Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
Interests: inorganic materials; graphene; graphene composites; energy storage devices; energy storage materials
Dr. Yanhong Lu

E-Mail Website
Guest Editor
School of Chemistry & Material Science, Langfang Normal University, Langfang 065000, China
Interests: inorganic materials; porous carbon materials; graphene; energy storage devices; photocatalytic reaction

Special Issue Information

Dear Colleagues,

Graphene, with its unique 2D crystal lattice, has been considered to be a good candidate for energy storage applications owing to its remarkable properties in terms of excellent conductivity, high specific surface area, and good thermal and mechanical properties. It can be an active material involved in electrochemical reactions of energy storage devices (ESDs). Moreover, graphene has been demonstrated to exhibit excellent compatibility with dissimilar active components such as metals, metal oxides, metal sulphides, conducting polymers, etc. Consequently, graphene-based composites have been reported with various microstructures in terms of mixed, layered, wrapped, anchored, encapsulated, and sandwich-like modes to construct high-performance energy storage materials. ESDs based on such graphene-based composites exhibit remarkably enhanced electrochemical performances owing to their synergistic effects through suppressing the aggregation of graphene and inter-particles, thus improving electron transportation and ion diffusion kinetics, enabling more exposure of active sites, and enhancing the electrochemical activity and structural stability during the redox reactions.

In this Special Issue, we wish to cover the most recent advances in the aspects of graphene and its composites for energy storage applications by hosting a mix of original research articles and short critical reviews.

Dr. Fan Zhang
Dr. Yanhong Lu
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Inorganics is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • graphene and its composites
  • energy storage devices
  • supercapacitors
  • lithium-ion batteries
  • beyond-Li ion batteries

Published Papers (2 papers)

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Research

17 pages, 5789 KiB  
Article
Hydrothermal Synthesis of Boron-Doped Graphene for High-Performance Zinc-Ion Hybrid Capacitor Using Aloe Vera Gel Electrolyte
by Vediyappan Thirumal, Palanisamy Rajkumar, Kisoo Yoo and Jinho Kim
Inorganics 2023, 11(7), 280; https://doi.org/10.3390/inorganics11070280 - 29 Jun 2023
Viewed by 1308
Abstract
The great interest in developing emerging zinc-ion capacitors (ZIC) for energy storage applications is due to their inexpensiveness and the future necessity for hybrid electrical energy storage devices. The Zn-ion hybrid capacitor device was assembled using boron (B)-doped reduced graphene oxide (B-RGO) material, [...] Read more.
The great interest in developing emerging zinc-ion capacitors (ZIC) for energy storage applications is due to their inexpensiveness and the future necessity for hybrid electrical energy storage devices. The Zn-ion hybrid capacitor device was assembled using boron (B)-doped reduced graphene oxide (B-RGO) material, which acts as the cathode, and pure zinc metal as an anode. This research work aims to study the influence of B-doped reduced graphene oxide (B-RGO) with Aloe vera gel as an electrolyte. The reduced graphene oxide (RGO) and B-RGO electrode active materials were confirmed through X-ray diffraction (XRD), RAMAN, Fourier transformation infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS), field emission scanning electron microscopy (FE-SEM) and field emission-transmission electron microscopy (FE-TEM) analysis. The surface morphological images reveal that a few-layered nanostructure B-RGO was used in the Zn-ion hybrid capacitor device. The electrochemical performance of the Zn-ion hybrid capacitor was evaluated through cyclic voltammetry (CV) and galvanostatic charge–discharge (GCD) measurements, with a wide active potential range of 0–2 V versus Zn/Zn+. The mixture composition of Aloe vera extract and 1M ZnSO4 electrolyte generated a stable voltage and exhibited good capacitive behavior. The fabricated ZIC coin cell device with the Aloe vera gel semi-gel electrolyte containing ZnSO4 demonstrated improved Zn+ ionic exchange and storage efficiency. Moreover, the B-RGO electrode active material exhibited excellent cycle stability. The simple one-step electrochemical technique is the most suitable process for boron doping into graphene nanosheets for future energy storage applications. Full article
(This article belongs to the Special Issue Graphene and Its Composites for Energy Storage Applications)
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10 pages, 3354 KiB  
Article
Enhancement in the Performance of Dye Sensitized Solar Cells (DSSCs) by Incorporation of Reduced Graphene Oxide (RGO) and Carbon Nanotubes (CNTs) in ZnO Nanostructures
by Ahmed Alshahrie, Ahmed A. Alghamdi, Prince M. Z. Hasan, Faheem Ahmed, Hanadi Mohammed Eid Albalawi, Ahmad Umar and Abdullah Alsulami
Inorganics 2022, 10(11), 204; https://doi.org/10.3390/inorganics10110204 - 11 Nov 2022
Cited by 3 | Viewed by 1521
Abstract
In this work, a fast, environment-friendly and economic route was used to prepare ZnO and their nanocomposites containing reduced graphene oxide (RGO) and carbon nanotubes (CNTs) for the fabrication of dye-sensitized solar cells (DSSCs). The prepared nanostructures were well-characterized by X-ray diffraction (XRD), [...] Read more.
In this work, a fast, environment-friendly and economic route was used to prepare ZnO and their nanocomposites containing reduced graphene oxide (RGO) and carbon nanotubes (CNTs) for the fabrication of dye-sensitized solar cells (DSSCs). The prepared nanostructures were well-characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), and Raman measurements. The XRD, Raman and TEM results confirmed that the ZnO nanostructures were crystallized into the hexagonal phase, and the nanocomposites containing RGO and CNTs. Morphological studies performed by using FESEM and TEM images showed that the ZnO possessed tube-like morphology with length and diameter in the range of ~1 micron and 90–200 nm, respectively, which were uniform and densely covered on the surface of the carbon materials. The DSSCs were fabricated using prepared nanostructures as a working electrode and platinum as a counter electrode with ruthenium-based dyes and iodide electrolytes. To further improve the efficiency of fabricated solar cells, nanocomposites of prepared nanostructures of ZnO with RGO and CNTs were synthesized, and their results were compared with the pristine samples. The results showed that the ZnO/CNTs (0.5 wt%) nanocomposites electrode exhibited the highest power conversion efficiency (PCE) of DSSCs with a maximum value of 0.612% compared to 0.326% of DSSC with pure ZnO, and 0.574% of DSSC with ZnO/RGO. Significantly, this technique could be used for large-scale production using the existing economical and highly effective DSSC fabrication technique. Full article
(This article belongs to the Special Issue Graphene and Its Composites for Energy Storage Applications)
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