Advanced Nanocomposites for Supercapacitors

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Energy and Catalysis".

Deadline for manuscript submissions: closed (25 December 2023) | Viewed by 1427

Special Issue Editor


E-Mail Website
Guest Editor
School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610032, China
Interests: supercapacitors; lithium-ion batteries; solid-state electrolytes; high-entropy polymers; nanocarbons; MXenes

Special Issue Information

Dear Colleagues,

With the increasing demand for environmentally friendly, high-performance renewable energy storage devices, energy storage devices have become an unavoidable part of the clean energy portfolio. Among the various types of energy storage devices, supercapacitors have gained extensive attention on account of their high power density, fast charging and discharging capability, and long life cycle, and they function as a bridge for the power–energy difference that exists between capacitors (high power density) and supercapacitors (large energy storage). Electrode materials are the core part of the supercapacitor and determine the final electrochemical performance. Compared to bulk electrode materials, nanomaterials have many accessible surface sites, which is beneficial for electrolyte permeation, electron transfer, and redox reactions. At present, a large number of advanced nanomaterials, such as nanocarbons, conducting polymers, metal–organic frameworks, metal dichalcogenides, and MXenes, have been extensively used as electrode materials for the construction of supercapacitor devices. Owing to the shortcomings of single electrode materials, the electrodes made from them have poor electrochemical performance. Accordingly, to enhance the energy storage performance, various nanocomposites are currently being investigated as supercapacitor electrodes because of the synergistic effect between these components.

This Special Issue of Nanomaterials aims to cover the most recent advances in advanced nanocomposite-based supercapacitors. This includes, but is not limited to, the exploitation of new electrode materials, structure and morphology designs, doping, and composite formation. The Special Issue aims to promote the performance of electrode materials and expand the applications of supercapacitors in the field.

Prof. Dr. Haitao Zhang
Guest Editor

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. Nanomaterials is an international peer-reviewed open access semimonthly 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 2900 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

  • advanced nanocomposites
  • nanostructured materials
  • nanocarbons
  • conducting polymers
  • MXenes
  • supercapacitors
  • energy density
  • power density
  • self-discharging behavior

Published Papers (1 paper)

Order results
Result details
Select all
Export citation of selected articles as:

Research

15 pages, 4397 KiB  
Article
Effect of Annealing Temperature on the Structural and Electrochemical Properties of Hydrothermally Synthesized NiCo2O4 Electrodes
by Seok-Hee Lee, Hyun-Jin Cha, Junghwan Park, Chang-Sik Son, Young-Guk Son and Donghyun Hwang
Nanomaterials 2024, 14(1), 79; https://doi.org/10.3390/nano14010079 - 27 Dec 2023
Cited by 2 | Viewed by 1138
Abstract
In this study, a porous Ni-foam support was employed to enhance the capacitance of nickel cobaltite (NiCo2O4) electrodes designed for supercapacitors. The hydrothermal synthesis method was employed to grow NiCo2O4 as an active material on Ni-foam. [...] Read more.
In this study, a porous Ni-foam support was employed to enhance the capacitance of nickel cobaltite (NiCo2O4) electrodes designed for supercapacitors. The hydrothermal synthesis method was employed to grow NiCo2O4 as an active material on Ni-foam. The NiCo2O4 sample derived from hydrothermal synthesis underwent subsequent post-heat treatment at temperatures of 250 °C, 300 °C, and 350 °C. Thermogravimetric analysis of the NiCo2O4 showed that weight loss due to water evaporation occurs after 100 °C and enters the stabilization phase at temperatures above 400 °C. The XRD pattern indicated that NiCo2O4 grew into a spinel structure, and the TEM results demonstrated that the diffraction spots (DSs) on the (111) plane of the sample annealed at 350 °C were more pronounced than those of other samples. The specific capacitance of the NiCo2O4 electrodes exhibited a decrease with increasing current density across all samples, irrespective of the annealing temperature. The electrode annealed at 350 °C recorded the highest specific capacitance value. However, the capacity retention rate of the NiCo2O4 electrode revealed a deteriorating trend, declining to 88% at 250 °C, 75% at 300 °C, and 63% at 350 °C, as the annealing temperature increased. Full article
(This article belongs to the Special Issue Advanced Nanocomposites for Supercapacitors)
Show Figures

Figure 1

Back to TopTop