Advances in Nanostructured Electrode Materials: Design and Applications

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

Deadline for manuscript submissions: 10 July 2024 | Viewed by 1929

Special Issue Editor


E-Mail Website
Guest Editor
Department of Civil, Energy, Environmental and Materials Engineering, Università degli Studi Mediterranea di Reggio Calabria, Reggio Calabria, Italy
Interests: nanocomposites; nanoparticles; graphene oxide; graphene-based materials; synthesis; structural characterization; green chemistry; heterogeneous catalysis; selective hydrogenation; environmental catalysis
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The development of novel nanostructured materials is a cornerstone of emerging electrochemical technologies that provide clean and environmentally friendly solutions to meet end user requirements. Nanocomposites play a key role in the adoption of such technologies due to their unique and sometimes enhanced properties and because of the possibility of suitably tuning their structural and functional properties. Furthermore, nanostructured electrode materials are key in terms of significantly advancing the performance, efficiency, and safety technology. This Special Issue aims to depict the state-of-the-art design, synthesis and characterization of various nanostructured electrode materials, as well as their electrochemical applications in the fields of electrocatalysis, energy conversion, energy storage, and environmental protection.

In this Special Issue, original research articles and reviews are welcome. Research areas may include (but not limited to) the following:

  • Design and synthesis of nanostructured materials.
  • Functional nanomaterials.
  • Development of the different classes of multicomponent materials.
  • Nanoalloy.
  • Advanced characterization for understanding the electrochemical behavior and structure-property relationships of electrode materials.
  • Applications of nanostructured materials, including energy storage and conversion devices, electrocatalysis, water-splitting process for hydrogen production, photocatalysis, removal of pollutants.

We look forward to receiving your contributions.

Dr. Maria Grazia Musolino
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

  • nanostructured materials
  • nanomaterials
  • nanocomposites
  • electrode materials
  • synthesis
  • characterization
  • functional materials
  • cathode
  • anode
  • applications

Published Papers (3 papers)

Order results
Result details
Select all
Export citation of selected articles as:

Research

18 pages, 5015 KiB  
Article
Na3MnTi(PO4)3/C Nanofiber Free-Standing Electrode for Long-Cycling-Life Sodium-Ion Batteries
by Debora Maria Conti, Claudia Urru, Giovanna Bruni, Pietro Galinetto, Benedetta Albini, Vittorio Berbenni, Alessandro Girella and Doretta Capsoni
Nanomaterials 2024, 14(9), 804; https://doi.org/10.3390/nano14090804 - 5 May 2024
Viewed by 611
Abstract
Self-standing Na3MnTi(PO4)3/carbon nanofiber (CNF) electrodes are successfully synthesized by electrospinning. A pre-synthesized Na3MnTi(PO4)3 is dispersed in a polymeric solution, and the electrospun product is heat-treated at 750 °C in nitrogen flow to [...] Read more.
Self-standing Na3MnTi(PO4)3/carbon nanofiber (CNF) electrodes are successfully synthesized by electrospinning. A pre-synthesized Na3MnTi(PO4)3 is dispersed in a polymeric solution, and the electrospun product is heat-treated at 750 °C in nitrogen flow to obtain active material/CNF electrodes. The active material loading is 10 wt%. SEM, TEM, and EDS analyses demonstrate that the Na3MnTi(PO4)3 particles are homogeneously spread into and within CNFs. The loaded Na3MnTi(PO4)3 displays the NASICON structure; compared to the pre-synthesized material, the higher sintering temperature (750 °C) used to obtain conductive CNFs leads to cell shrinkage along the a axis. The electrochemical performances are appealing compared to a tape-casted electrode appositely prepared. The self-standing electrode displays an initial discharge capacity of 124.38 mAh/g at 0.05C, completely recovered after cycling at an increasing C-rate and a coulombic efficiency ≥98%. The capacity value at 20C is 77.60 mAh/g, and the self-standing electrode exhibits good cycling performance and a capacity retention of 59.6% after 1000 cycles at 1C. Specific capacities of 33.6, 22.6, and 17.3 mAh/g are obtained by further cycling at 5C, 10C, and 20C, and the initial capacity is completely recovered after 1350 cycles. The promising capacity values and cycling performance are due to the easy electrolyte diffusion and contact with the active material, offered by the porous nature of non-woven nanofibers. Full article
Show Figures

Figure 1

12 pages, 6788 KiB  
Article
Uniaxial Magnetization and Electrocatalytic Performance for Hydrogen Evolution on Electrodeposited Ni Nanowire Array Electrodes with Ultra-High Aspect Ratio
by Yumu Sako, Ryusei Saeki, Masamitsu Hayashida and Takeshi Ohgai
Nanomaterials 2024, 14(9), 755; https://doi.org/10.3390/nano14090755 - 25 Apr 2024
Viewed by 436
Abstract
Ni nanowire array electrodes with an extremely large surface area were made through an electrochemical reduction process utilizing an anodized alumina template with a pore length of 320 µm, pore diameter of 100 nm, and pore aspect ratio of 3200. The electrodeposited Ni [...] Read more.
Ni nanowire array electrodes with an extremely large surface area were made through an electrochemical reduction process utilizing an anodized alumina template with a pore length of 320 µm, pore diameter of 100 nm, and pore aspect ratio of 3200. The electrodeposited Ni nanowire arrays were preferentially oriented in the (111) plane regardless of the deposition potential and exhibited uniaxial magnetic anisotropy with easy magnetization in the axial direction. With respect to the magnetic properties, the squareness and coercivity of the electrodeposited Ni nanowire arrays improved up to 0.8 and 550 Oe, respectively. It was also confirmed that the magnetization reversal was suppressed by increasing the aspect ratio and the hard magnetic performance was improved. The electrocatalytic performance for hydrogen evolution on the electrodeposited Ni nanowire arrays was also investigated and the hydrogen overvoltage was reduced down to ~0.1 V, which was almost 0.2 V lower than that on the electrodeposited Ni films. Additionally, the current density for hydrogen evolution at −1.0 V and −1.5 V vs. Ag/AgCl increased up to approximately −580 A/m2 and −891 A/m2, respectively, due to the extremely large surface area of the electrodeposited Ni nanowire arrays. Full article
Show Figures

Figure 1

11 pages, 4865 KiB  
Article
Ultra-Low Thermal Conductivity and Improved Thermoelectric Performance in Tungsten-Doped GeTe
by Zhengtang Cai, Kaipeng Zheng, Chun Ma, Yu Fang, Yuyang Ma, Qinglin Deng and Han Li
Nanomaterials 2024, 14(8), 722; https://doi.org/10.3390/nano14080722 - 20 Apr 2024
Viewed by 582
Abstract
Compared to SnTe and PbTe base materials, the GeTe matrix exhibits a relatively high Seebeck coefficient and power factor but has garnered significant attention due to its poor thermal transport performance and environmental characteristics. As a typical p-type IV–VI group thermoelectric material, W-doped [...] Read more.
Compared to SnTe and PbTe base materials, the GeTe matrix exhibits a relatively high Seebeck coefficient and power factor but has garnered significant attention due to its poor thermal transport performance and environmental characteristics. As a typical p-type IV–VI group thermoelectric material, W-doped GeTe material can bring additional enhancement to thermoelectric performance. In this study, the introduction of W, Ge1−xWxTe (x = 0, 0.002, 0.005, 0.007, 0.01, 0.03) resulted in the presence of high-valence state atoms, providing additional charge carriers, thereby elevating the material’s power factor to a maximum PFpeak of approximately 43 μW cm−1 K−2, while slightly optimizing the Seebeck coefficient of the solid solution. Moreover, W doping can induce defects and promote slight rhombohedral distortion in the crystal structure of GeTe, further reducing the lattice thermal conductivity κlat to as low as approximately 0.14 W m−1 K−1 (x = 0.002 at 673 K), optimizing it to approximately 85% compared to the GeTe matrix. This led to the formation of a p-type multicomponent composite thermoelectric material with ultra-low thermal conductivity. Ultimately, W doping achieves the comprehensive enhancement of the thermoelectric performance of GeTe base materials, with the peak ZT value of sample Ge0.995W0.005Te reaching approximately 0.99 at 673 K, and the average ZT optimized to 0.76 in the high-temperature range of 573–723 K, representing an increase of approximately 17% compared to pristine GeTe within the same temperature range. Full article
Show Figures

Figure 1

Back to TopTop