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Development of New Energy Resources
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Development of New Energy Resources

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "L: Energy Sources".

Deadline for manuscript submissions: 31 May 2024 | Viewed by 5882

Special Issue Editors

Prof. Dr. Jinho Kim

E-Mail Website
Guest Editor
Department of Mechanical Engineering, Yeungnam University, Gyeongsan-si 38541, Republic of Korea
Interests: solenoid coil-capacitor; electromagnetic gun; supercapacitor; batteries; nanomaterials; electric vehicles
Special Issues, Collections and Topics in MDPI journals
Dr. Vediyappan Thirumal

E-Mail Website
Guest Editor
Department of Mechanical Engineering, Yeungnam University, Gyeongsan-si 38541, Korea
Interests: electrochemistry; carbon nanostructures; hydrogen energy; electrical energy storage; electrochemical energy research; hybrid battery type supercapacitor; new 2D-nanosheets production; hybrid energy storage

Special Issue Information

Dear Colleagues,

Energy resource use is a serious concern for global energy development and the present and future challenges. The common issues associated with new alternative energy resources play a significant role in ensuring a pollution-free environment worldwide. Novel energy is sensitive to energy conservation, with substitute sources including electrical energy, solar energy and thermal energy. Energy forms from primary and secondary sources have seen buildings incorporating new energy strategies and novel techniques using nanostructured materials; moreover, renewable sources found in the environment have been converted or stored. So, novel developments in renewable energy are steadily increasing regarding novel alternative energy storage resources aimed at hybrid battery/supercapacitor devices for future portable electronics devices and future hybrid electric vehicles.

This Special Issue, “Development of New Energy Resources”, aims to discuss the recent and significant advances in the development of nanomaterials for renewable energy applications as a recent development in alternative energy research addressing high power and high energy density for hybrid electrical energy storage devices, as well the conversion of thermal energy into direct electrochemical energy and alternative electrical energy storage design.

The topics of interest for publication include, but are not limited to the following topics:

  • The harvesting and storage of energy battery type hybrid capacitor and Zn, Al, Ca based alternative batteries, as well as thermo-electric battery devices.
  • Carbon nanomaterials in renewable energy production, including CNTs and graphene.
  • Solenoid coil research development theory, design, and experimental development.
  • New electrical energy storage materials; innovative 2D-layered materials.
  • Electromagnetic coils gun development for future high-speed electric motors for lightweight future electric vehicles.
  • Biomass energy for supercapacitors and batteries, including drawbacks and negative results as well as alternative solutions.

Prof. Dr. Jinho Kim
Dr. Vediyappan Thirumal
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. Energies 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 2600 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

  • renewable energy sources
  • electrical energy storage
  • thermal energy storage
  • nanomaterials
  • hybrid electric vehicles
  • solenoid coil

Published Papers (3 papers)

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Research

13 pages, 3130 KiB  
Article
Synergistic Germanium-Decorated h-BN/MoS2 Heterostructure Nanosheets: An Advanced Electrocatalyst for Energy Storage Applications
by M. Saravanan, Rajkumar Palanisamy, V. Sethuraman, K. Diwakar, P. Senthil Kumar, P. Sundara Venkatesh, N. Kannan, R. Joel Kingston, K. Aravinth and Jinho Kim
Energies 2023, 16(7), 3286; https://doi.org/10.3390/en16073286 - 06 Apr 2023
Cited by 2 | Viewed by 1396
Abstract
Increasing concerns about the vulnerability of the world’s energy supply and the necessity to implement sustainable technologies have prompted researchers to develop high-performance electrocatalysts that are affordable and efficient for converting and storing renewable energy. This article reports a facile approach to fabricating [...] Read more.
Increasing concerns about the vulnerability of the world’s energy supply and the necessity to implement sustainable technologies have prompted researchers to develop high-performance electrocatalysts that are affordable and efficient for converting and storing renewable energy. This article reports a facile approach to fabricating two-dimensional (2D) Ge-decorated h-BN/MoS2 heterostructure nanosheets by self-assembly for multiple electrochemical applications such as supercapacitor and hydrogen evolution reactions. The organization of the physical and chemical links between the germanium modulations on the heterostructure of boron nitride/molybdenum sulphide (Ge/h-BN/MoS2) were facilitated to generate more active sites. Furthermore, the asymmetric supercapacitor of Ge-decorated h-BN/MoS2 amplified the capacitance to 558.53 F g−1 at 1 A g−1 current density and 159.19 F g−1 at 10 A g−1, in addition to a retention rate of 85.69% after 2000 cycles. Moreover, the Ge-decorated h-BN/MoS2 catalyst realized a low over-potential value, with an RHE of 0.57 (HER) at 5 mA/cm2, a Tafel value of ∼204 mV/dec, and long-term electrolysis stability of 10 h. This work may open the door for further investigations on metal-decorated heterostructures, which have a significant potential for both supercapacitor and water-splitting applications. Full article
(This article belongs to the Special Issue Development of New Energy Resources)
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22 pages, 9480 KiB  
Article
Biomass-Derived Hard Carbon and Nitrogen-Sulfur Co-Doped Graphene for High-Performance Symmetric Sodium Ion Capacitor Devices
by Vediyappan Thirumal, T. V. M. Sreekanth, Kisoo Yoo and Jinho Kim
Energies 2023, 16(2), 802; https://doi.org/10.3390/en16020802 - 10 Jan 2023
Cited by 5 | Viewed by 2349
Abstract
An inexpensive bio-mass-derived hard carbon from tamarind pods was used as an anode, and nitrogen and nitrogen (N)/sulfur (S) co-doped graphene were used as a cathode for novel hybrid Na-ion supercapacitors. The structural and surface morphological analyses are investigated using a range of [...] Read more.
An inexpensive bio-mass-derived hard carbon from tamarind pods was used as an anode, and nitrogen and nitrogen (N)/sulfur (S) co-doped graphene were used as a cathode for novel hybrid Na-ion supercapacitors. The structural and surface morphological analyses are investigated using a range of techniques. The 3D network of the heteroatom-doped graphene skeleton edges for N and NS-doping conformations were assigned as N-RGOs (N1s-5.09 at.%) and NS-RGOs (N1s-7.66 at.% and S1s-2.22 at.%) based on energy dispersive X-ray spectroscopy elemental mapping. The negative electrode (T-HC) hard carbon was pre-treated by pre-sodiation with a half-cell process by galvanostatic charge–discharge in a sodium-ion battery at 0.01–2.5 V vs. Na/Na+. The T-HC//NS-RGO, T-HC//N-RGO, and T-HC//RGO were used to construct the Na-ion supercapacitor device. In the CV experiments, the electrochemical galvanostatic charge–discharge was studied at 1.0–4.2 V. The specific capacitance was 352.18 F/g for the T.HC/NS-RGO device and 180.93 F/g for the T.HC/N-RGO device; both were symmetric devices. T.HC/NS-RGO device performance revealed excellent cycling stability, with T-HC//NS-RGO showing 89.26% capacitance retention over 5000 cycles. A carbon–carbon symmetric device, such as a Na-ion hybrid capacitor, can exhibit the characteristics of both batteries and supercapacitors for future electric vehicles. Full article
(This article belongs to the Special Issue Development of New Energy Resources)
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17 pages, 4254 KiB  
Article
Facile Preparations of Electrochemically Exfoliated N-Doped Graphene Nanosheets from Spent Zn-Carbon Primary Batteries Recycled for Supercapacitors Using Natural Sea Water Electrolytes
by Vediyappan Thirumal, T. V. M. Sreekanth, Kisoo Yoo and Jinho Kim
Energies 2022, 15(22), 8650; https://doi.org/10.3390/en15228650 - 18 Nov 2022
Cited by 3 | Viewed by 1660
Abstract
A single production of nitrogen-doped graphene nanosheets was developed in this present work from a spent Zn-C primary battery. The electrochemically exfoliated nitrogen-doped graphene nanosheets (EC-N-GNS) was applied in supercapacitor symmetric devices. As-prepared EC-N-GNS was utilized for a symmetric supercapacitor with natural seawater [...] Read more.
A single production of nitrogen-doped graphene nanosheets was developed in this present work from a spent Zn-C primary battery. The electrochemically exfoliated nitrogen-doped graphene nanosheets (EC-N-GNS) was applied in supercapacitor symmetric devices. As-prepared EC-N-GNS was utilized for a symmetric supercapacitor with natural seawater multivalent ion electrolyte. The recycling of graphite into nitrogen-doped graphene was characterized by X-ray diffraction and RAMAN spectroscopy. The few-layered morphological structures of EC-N-GNS were analyzed by field emission scanning electron microscope and field emission transmission electron microscope. The electrochemical analysis of the cyclic voltammetry curves observed an electrochemical double-layer capacitor (EDLC) behavior with a potential window of −0.8 V to +0.5 V. The electrochemical galvanostatic charge—discharge study was obtained to be maximum specific capacitance (Csp)—67.69 F/g and 43.07 F/g at a current density of 1 A/g. We promising the facile single-step electrochemically exfoliated EC-N-GNS was obtained from a waste zinc-carbon primary battery to recycle the graphite electrodes. The superior electrochemical performance comparatively bulk graphite and EC-N-GNS for potential energy storage supercapacitor applications. Full article
(This article belongs to the Special Issue Development of New Energy Resources)
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