Special Issue Editors

Dr. Arjun Prasad Tiwari
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Guest Editor

Department of Nano Convergence Engineering, Jeonbuk National University, Jeonju 54896, Korea
Interests: energy storage; electrospinning fibers; carbon materials; tissue engineering; drug delivery; biomaterials

Dr. Gunendra Prasad Ojha
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SciProfiles

Guest Editor

Carbon Composite Energy Nanomaterials Research Center, Woosuk University, Wanju 55338, Korea
Interests: energy storage and conversion; electrochemistry; nanomaterials; carbon materials; metal oxides; metal-organic frameworks (MOFs)

Special Issue Information

Dear Colleagues,

High-performance supercapacitor devices have been caught great attention to addressing the ever-increasing energy storage concerns. Carbon-based materials are at the forefront to address that concern due to their high-power density, excellent thermal stability, high conductivity, and exceptional stability in both acidic and alkaline conditions. Moreover, abundantly available in nature and low cost are other important factors that made carbon materials have been always within attention among the energy companies and researchers. On the other hand, the depletion of natural combustion-based energy sources due to the growing demands of energy in different sectors such as transportation, industrial, and agricultural may lead to an energy crisis. In this scenario, achieving secure and sustainable energy sources for the next generation is one of the biggest challenges to humankind. Hydrogen generation from the splitting of water and fuel cell technologies are the front-liner alternative and renewable energy sources. Carbon materials are important candidates for enhancing water splitting.

Herein, this special issue covers the design, synthesis, physicochemical characterization, and any electrochemical performances of any carbon materials, their composites, and modifications. Carbon materials include carbon nanotubes, carbon nano/microspheres, carbon nanofibers, graphene, fullerene, etc.). We invite authors to submit their original research work as well as review articles with major focus on carbon-based materials for energy storage and water splitting, carbon dioxide reduction, photo catalysis applications.

Dr. Arjun Prasad Tiwari
Dr. Gunendra Prasad Ojha
Guest Editors

Manuscript Submission Information

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Keywords

carbon materials
electrospinning carbon nanofibers
graphene oxide
water splitting
supercapacitor
oxygen evolution reaction
hydrogen evolution reaction

Published Papers (2 papers)

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Research

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Open AccessArticle

Effect of KOH on the Energy Storage Performance of Molasses-Based Phosphorus and Nitrogen Co-Doped Carbon

and

Electrochem 2021, 2(1), 29-40; https://doi.org/10.3390/electrochem2010003 - 21 Jan 2021

Cited by 2 | Viewed by 760

Abstract

In this study, we have evaluated the effect of potassium hydroxide (KOH) on the energy storage performance of metal-free carbon-based materials prepared from molasses. Molasses are a renewable-resource biomass and economical by-product of sugar refinement, used here as a carbon precursor. Two co-doped carbon materials using molasses were synthesized via a time and cost-efficient microwave carbonization process, with ammonium polyphosphate as a phosphorus and nitrogen doping agent. The phosphorus and nitrogen co-doped carbon (PNDC) samples were prepared in the presence and absence of a chemical activating agent (KOH), to study the role of chemical activation on PNDCs. Physical characterizations were performed to gain insight into the composition, pore size and topographical data of each material. Electrochemical characterization via cyclic voltammetry in 1 M sulfuric acid (H₂SO₄) as well as in 6 M KOH as electrolytes, revealed high current density and specific capacitance for the chemically activated material (PNDC2) compared to one without chemical activation (PNDC1). The capacitance value of 244 F/g in KOH electrolyte was obtained with PNDC2. It is concluded that addition of KOH prior to carbonization increases the surface functionality, which significantly enhances the electrochemical properties of the PNDC material such as current density, stability, and specific capacitance. Full article

(This article belongs to the Special Issue Carbon-Based Materials for Energy Storage and Water Splitting Applications)

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Review

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Open AccessReview

A Review of Electrospun Carbon Nanofiber-Based Negative Electrode Materials for Supercapacitors

Prakash Chandra Lohani

and

Hak-Yong Kim

Electrochem 2021, 2(2), 236-250; https://doi.org/10.3390/electrochem2020017 - 13 May 2021

Cited by 1 | Viewed by 827

Abstract

The development of smart negative electrode materials with high capacitance for the uses in supercapacitors remains challenging. Although several types of electrode materials with high capacitance in energy storage have been reported, carbon-based materials are the most reliable electrodes due to their high conductivity, high power density, and excellent stability. The most common complaint about general carbon materials is that these electrode materials can hardly ever be used as free-standing electrodes. Free-standing carbon-based electrodes are in high demand and are a passionate topic of energy storage research. Electrospun nanofibers are a potential candidate to fill this gap. However, the as-spun carbon nanofibers (ECNFs) have low capacitance and low energy density on their own. To overcome the limitations of pure CNFs, increasing surface area, heteroatom doping and metal doping have been chosen. In this review, we introduce the negative electrode materials that have been developed so far. Moreover, this review focuses on the advances of electrospun nanofiber-based negative electrode materials and their limitations. We put forth a future perspective on how these limitations can be overcome to meet the demands of next-generation smart devices. Full article

(This article belongs to the Special Issue Carbon-Based Materials for Energy Storage and Water Splitting Applications)

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