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Applications of Nanomaterials and Nanotechnology in Energy Storage Device: Volume...
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Applications of Nanomaterials and Nanotechnology in Energy Storage Device: Volume II

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

Deadline for manuscript submissions: closed (20 November 2023) | Viewed by 3092

Special Issue Editor

Prof. Dr. Joonho Bae

E-Mail Website
Guest Editor
Physics Department, Gachon University, Seongnam-si, Gyeonggi-do, Republic of Korea
Interests: energy storage; supercapacitor; electrochemical capacitors; energy materials; fuel cells; Li-ion battery
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Over been the past few decades, there have increasing global demands for high-efficiency energy storage devices to power various electronic devices, including cellular phones, laptop computers, and digital cameras. Recently, these demands are rapidly growing due to emerging applications of energy storage in a new generation of electric vehicles, hybrid electric vehicles, smart grids, and electrical energy storage from wind and solar power.

Nanomaterials and nanotechnology have been extensively studied for the development of high-efficiency and next-generation energy storage devices. The high surface-to-volume ratio and short diffusion pathways of nano-sized materials can achieve a large power density and energy density. Their various synthesis and functionalization methods enable the mass production of energy storage devices.

In this Special Issue of Nanomaterials, we present the recent advances in nanomaterials and nanotechnology for energy storage devices, including, but not limited to, batteries, Li-ion batteries, Li-sulfur batteries, electric double-layer capacitors, hybrid capacitors, and fuel cells.

Prof. Dr. Joonho Bae
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

  • energy storage
  • Li ion battery
  • Li-sulfur battery
  • Li-air battery
  • supercapacitor
  • electric double layer capacitor
  • hybrid capaictors
  • fuel cells

Published Papers (2 papers)

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0 pages, 7226 KiB  
Article
Enhanced Thermal Stability and Conductivity of FeF3 Using Ni-Coated Carbon Composites: Application as High-Temperature Cathodes in Thermal Batteries
by Ji-Hyeok Choi, Su Hyeong Kim, Ha Eun Kang, Minu Kim, Yusong Choi and Young Soo Yoon
Nanomaterials 2023, 13(24), 3089; https://doi.org/10.3390/nano13243089 - 6 Dec 2023
Cited by 2 | Viewed by 1271
Abstract
Cathode active materials and conductive additives for thermal batteries operating at high temperatures have attracted research interest, with a particular focus on compounds offering high thermal stability. Recently, FeF3 has been proposed as a candidate for high-voltage cathode materials; however, its commercialization [...] Read more.
Cathode active materials and conductive additives for thermal batteries operating at high temperatures have attracted research interest, with a particular focus on compounds offering high thermal stability. Recently, FeF3 has been proposed as a candidate for high-voltage cathode materials; however, its commercialization is hindered by its low conductivity. In this study, conductive additives, such as Ni-coated carbon composites (multi-walled carbon nanotubes (MWCNTs) and carbon black (CB)), were utilized to enhance the thermal stability and conductivity of FeF3. The incorporation of metal–carbon conductive additives in the FeF3 composite increased the thermal stability by more than 10 wt.% and ensured high capacity upon conductivity enhancement. The FeF3@Ni/MWCB 15 wt.% composite containing 30 wt.% Ni exhibited a discharge capacity of ∼86% of the theoretical capacity of 712 mAh/g. The use of Ni-coated carbon-based conductive additives will allow the application of FeF3 as an effective high-temperature cathode material for thermal batteries. Full article
(This article belongs to the Special Issue Applications of Nanomaterials and Nanotechnology in Energy Storage Device: Volume II)
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12 pages, 2758 KiB  
Article
Terahertz Optical Properties and Carrier Behaviors of Graphene Oxide Quantum Dot and Reduced Graphene Oxide Quantum Dot via Terahertz Time-Domain Spectroscopy
by Seunghyun Song, Hyeongmun Kim, Chul Kang and Joonho Bae
Nanomaterials 2023, 13(13), 1948; https://doi.org/10.3390/nano13131948 - 27 Jun 2023
Cited by 2 | Viewed by 1463
Abstract
Graphene quantum dots (GQDs) with a band gap have been widely applied in many fields owing to their unique optical properties. To better utilize the optical advantages of GQDs, it is important to understand their optical characteristics. Our study demonstrates the optical properties [...] Read more.
Graphene quantum dots (GQDs) with a band gap have been widely applied in many fields owing to their unique optical properties. To better utilize the optical advantages of GQDs, it is important to understand their optical characteristics. Our study demonstrates the optical properties and carrier behaviors of synthesized graphene oxide quantum dot (GOQD) and reduced graphene oxide quantum dot (rGOQD) pellets via Terahertz time-domain spectroscopy (THz-TDS). The complex permittivity and optical conductivity are obtained in the terahertz region, indicating that the optical conductivity of the GOQD is higher than that of the rGOQD. Although rGOQD has a higher carrier density, approximately 1.5-times than that of GOQD, the lower charge carrier mobility of the rGOQD, which is obtained using Drude–Lorentz oscillator model fitting contributes to a decrease in optical conductivity. This lower mobility can be attributed to the more significant number of defect states within the rGOQD compared to GOQD. To the best of our knowledge, our study initially demonstrates the optical property and carrier behaviors of GOQD and rGOQD in the THz region. Moreover, this study provides important information on factors influencing carrier behavior to various fields in which carrier behavior plays an important role. Full article
(This article belongs to the Special Issue Applications of Nanomaterials and Nanotechnology in Energy Storage Device: Volume II)
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