Novel Energy Storage Devices based on Carbon and Oxide Nanostructures

A special issue of Micromachines (ISSN 2072-666X). This special issue belongs to the section "D:Materials and Processing".

Deadline for manuscript submissions: closed (15 August 2021) | Viewed by 10167

Special Issue Editor


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Guest Editor
Nanotechnology and Integrated Bio-Engineering Centre (NIBEC), School of Engineering, Ulster University, Newtownabbey BT37 0QB, UK
Interests: nanostructured carbon; metal oxide nanostructures; renewable energy; biosensor; nano-optics

Special Issue Information

Dear colleagues,

Over the past few decades, energy storage devices have become the focus of intense research due to their potential to replace fossil fuels for certain applications. They have numerous advantages such as high power and energy densities, cost-effectiveness, prolonged lifespan, and negligible environmental impact. Nanostructured carbon as electrode has been widely studied due to its potential in revolutionizing the energy storage and conversion technology. Metal oxide nanostructures possess great potential as high-performance electrode materials due to their high theoretical specific capacitance, high charge storage capability, and pseudo capacitive nature. However, for metal oxides, a few drawbacks such as quick capacitance fading, structural damage during charge-discharge, sluggish electronic/ionic transport, and low rate performance remain. These drawbacks can be compensated for by hybridizing metal oxides with nanostructured carbon of excellent electrical and mechanical properties. These hybrid electrodes hold great promise in developing high-efficiency energy storage devices and can bring a step change in this technology.

Accordingly, this Special Issue seeks to showcase research papers and review articles that focus on novel electrode developments based on carbon and oxide nanostructures including material processing, characterization, optimization of properties, and quality assurance approaches for high-performance energy storage devices. 

We look forward to receiving your submissions!

Dr. Supriya Chakrabarti
Guest Editor

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Keywords

  • supercapacitor
  • battery
  • electrode material
  • nanomaterials
  • nanostructured carbon
  • metal oxide nanostructure
  • electrochemical properties
  • material characterization
  • pseudo capacitance
  • double layer capacitance
  • energy storage device

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Published Papers (2 papers)

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Research

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16 pages, 3543 KiB  
Article
Functionalized Carbon Nanotube and MnO2 Nanoflower Hybrid as an Electrode Material for Supercapacitor Application
by Sagar Mothkuri, Honey Gupta, Pawan K. Jain, Tata Narsinga Rao, Gade Padmanabham and Supriya Chakrabarti
Micromachines 2021, 12(2), 213; https://doi.org/10.3390/mi12020213 - 20 Feb 2021
Cited by 14 | Viewed by 2822
Abstract
Functionalized carbon nanotube (FCNT) and Manganese Oxide (MnO2) nanoflower hybrid material was synthesized using hydrothermal technique as a promising electrode material for supercapacitor applications. The morphological investigation revealed the formation of ‘nanoflower’ like structure of MnO2 connected with FCNT, thus [...] Read more.
Functionalized carbon nanotube (FCNT) and Manganese Oxide (MnO2) nanoflower hybrid material was synthesized using hydrothermal technique as a promising electrode material for supercapacitor applications. The morphological investigation revealed the formation of ‘nanoflower’ like structure of MnO2 connected with FCNT, thus paving an easy path for the conduction of electrons during the electrochemical mechanism. A significant improvement in capacitance properties was observed in the hybrid material, in which carbon nanotube acts as a conducting cylindrical path, while the major role of MnO2 was to store the charge, acting as an electrolyte reservoir leading to an overall improved electrochemical performance. The full cell electrochemical analysis of FCNT-MnO2 hybrid using 3 M potassium hydroxide (KOH) electrolyte indicated a specific capacitance of 359.53 F g−1, specific energy of 49.93 Wh kg−1 and maximum specific power of 898.84 W kg−1 at 5 mV s−1. The results show promise for the future of supercapacitor development based on hybrid electrode materials, where high specific energy can be achieved along with high specific power and long cycle life. Full article
(This article belongs to the Special Issue Novel Energy Storage Devices based on Carbon and Oxide Nanostructures)
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Review

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25 pages, 5863 KiB  
Review
Recent Studies on Supercapacitors with Next-Generation Structures
by Juho Sung and Changhwan Shin
Micromachines 2020, 11(12), 1125; https://doi.org/10.3390/mi11121125 - 18 Dec 2020
Cited by 51 | Viewed by 6861
Abstract
Supercapacitors have shown great potential as a possible solution to the increasing global demand for next-generation energy storage systems. Charge repositioning is based on physical or chemical mechanisms. There are three types of supercapacitors—the electrochemical double layer, the pseudocapacitor, and a hybrid of [...] Read more.
Supercapacitors have shown great potential as a possible solution to the increasing global demand for next-generation energy storage systems. Charge repositioning is based on physical or chemical mechanisms. There are three types of supercapacitors—the electrochemical double layer, the pseudocapacitor, and a hybrid of both. Each type is further subdivided according to the material used. Herein, a detailed overview of the working mechanism as well as a new method for capacitance enhancement are presented. Full article
(This article belongs to the Special Issue Novel Energy Storage Devices based on Carbon and Oxide Nanostructures)
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