Novel Nanomaterials for Energy-Efficient, Sustainable and High-Performance Applications

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

Deadline for manuscript submissions: closed (31 December 2023) | Viewed by 3366

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Guest Editor
Director, Frontier Institute for Research in Sensor Technologies (FIRST), University of Maine, Orono, ME 04469, USA
Interests: novel nanostructures; surface and interface phenomena; multi-functional materials; cross-disciplinary research and education
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Special Issue Information

Dear Colleagues,

We invite you to submit an original research paper, communication, or comprehensive review for inclusion in a high-profile Special Issue entitled “Novel Nanomaterials for Energy-Efficient, Sustainable and High-Performance Applications” to be published in the journal Nanomaterials.

The continued demand for smaller and more powerful “smarter” devices is being challenged with the ever-increasing need for new materials with multiple functionalities in small dimensions. Nanomaterials represent a bridge between larger conventional solids and atomic/molecular scale quantum phenomena and possess novel and tunable functionalities that can significantly enhance energy efficiency, sustainability, and performance.  This Special Issue will focus on the beneficial use of nanomaterials the above-mentioned areas, including, but not limited to, the following applications:

  • Catalysis and chemical conversions;
  • Photovoltaic conversion;
  • Energy storage;
  • Thermal transport and electronic device packaging;
  • Renewable energy harvesting materials and systems;
  • Surfaces and interfaces;
  • Structural variations and phase changes at the nanoscale;
  • Hybrid nanomaterials that minimize the use of toxic materials while maximizing their earth-abundant and non-toxic components.

Original research papers, communications, and reviews are welcome.

Prof. Dr. Sharmila M. Mukhopadhyay
Guest Editor

Manuscript Submission Information

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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.

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Published Papers (2 papers)

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Research

14 pages, 3775 KiB  
Article
Energy Storage Performance of Electrode Materials Derived from Manganese Metal–Organic Frameworks
by Gyeongbeom Ryoo, Seon Kyung Kim, Do Kyung Lee, Young-Jin Kim, Yoon Soo Han and Kyung-Hye Jung
Nanomaterials 2024, 14(6), 503; https://doi.org/10.3390/nano14060503 - 11 Mar 2024
Viewed by 1064
Abstract
Metal–organic frameworks (MOFs) are porous materials assembled using metal and organic linkers, showing a high specific surface area and a tunable pore size. Large portions of metal open sites in MOFs can be exposed to electrolyte ions, meaning they have high potential to [...] Read more.
Metal–organic frameworks (MOFs) are porous materials assembled using metal and organic linkers, showing a high specific surface area and a tunable pore size. Large portions of metal open sites in MOFs can be exposed to electrolyte ions, meaning they have high potential to be used as electrode materials in energy storage devices such as supercapacitors. Also, they can be easily converted into porous metal oxides by heat treatment. In this study, we obtained high energy storage performance by preparing electrode materials through applying heat treatment to manganese MOFs (Mn-MOFs) under air. The chemical and structural properties of synthesized and thermally treated Mn-MOFs were measured by Fourier-transform infrared spectroscopy (FTIR), Raman spectroscopy, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and transmission electron microscopy (TEM). The surface area and porosity were investigated by nitrogen adsorption/desorption isotherms. The electrochemical properties were studied by cyclic voltammetry (CV) and galvanostatic charge–discharge (GCD) using a three-electrode cell. It was found that Mn-MOF electrodes that underwent heat treatment at 400 °C under air consisted of Mn2O3 with high specific surface area and porosity. They also showed a superior specific capacitance of 214.0 F g−1 and an energy density value of 29.7 Wh kg−1 (at 0.1 A g−1) compared to non-treated Mn-MOFs. Full article
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21 pages, 3538 KiB  
Article
3D Hierarchically Structured Tin Oxide and Iron Oxide-Embedded Carbon Nanofiber with Outermost Polypyrrole Layer for High-Performance Asymmetric Supercapacitor
by Chang-Min Yoon, Suk Jekal, Dong-Hyun Kim, Jungchul Noh, Jiwon Kim, Ha-Yeong Kim, Chan-Gyo Kim, Yeon-Ryong Chu and Won-Chun Oh
Nanomaterials 2023, 13(10), 1614; https://doi.org/10.3390/nano13101614 - 11 May 2023
Cited by 6 | Viewed by 2008
Abstract
Herein, unique three-dimensional (3D) hierarchically structured carbon nanofiber (CNF)/metal oxide/conducting polymer composite materials were successfully synthesized by combinations of various experimental methods. Firstly, base CNFs were synthesized by carbonization of electrospun PAN/PVP fibers to attain electric double-layer capacitor (EDLC) characteristics. To further enhance [...] Read more.
Herein, unique three-dimensional (3D) hierarchically structured carbon nanofiber (CNF)/metal oxide/conducting polymer composite materials were successfully synthesized by combinations of various experimental methods. Firstly, base CNFs were synthesized by carbonization of electrospun PAN/PVP fibers to attain electric double-layer capacitor (EDLC) characteristics. To further enhance the capacitance, tin oxide (SnO2) and iron oxide (Fe2O3) were coated onto the CNFs via facile hydrothermal treatment. Finally, polypyrrole (PPy) was introduced as the outermost layer by a dispersion polymerization method under static condition to obtain 3D-structured CNF/SnO2/PPy and CNF/Fe2O3/PPy materials. With each synthesis step, the morphology and dimension of materials were transformed, which also added the benign characteristic for supercapacitor application. For the practical application, as-synthesized CNF/SnO2/PPy and CNF/Fe2O3/PPy were applied as active materials for supercapacitor electrodes, and superb specific capacitances of 508.1 and 426.8 F g−1 (at 1 A g−1) were obtained (three-electrode system). Furthermore, an asymmetric supercapacitor (ASC) device was assembled using CNF/SnO2/PPy as the positive electrode and CNF/Fe2O3/PPy as the negative electrode. The resulting CNF/SnO2/PPy//CNF/Fe2O3/PPy device exhibited excellent specific capacitance of 101.2 F g−1 (at 1 A g−1). Notably, the ASC device displayed a long-term cyclability (at 2000 cycles) with a retention rate of 81.1%, compared to a CNF/SnO2//CNF/Fe2O3 device of 70.3% without an outermost PPy layer. By introducing the outermost PPy layer, metal oxide detachment from CNFs were prevented to facilitate long-term cyclability of electrodes. Accordingly, this study provides an effective method for manufacturing a high-performance and stable supercapacitor by utilizing unique 3D hierarchical materials, comprised of CNF, metal oxide, and conducting polymer. Full article
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