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Nanomaterials
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Nanomaterial Electrodes
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Nanomaterial Electrodes

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Nanoelectronics, Nanosensors and Devices".

Deadline for manuscript submissions: closed (30 April 2021) | Viewed by 8010

Special Issue Editor

Prof. Geon−Hyoung An

E-Mail Website
Guest Editor
Gyeongnam National University of Science and Technology, Jinju-si, Korea

Special Issue Information

Dear Colleagues,

The development of advanced electrode materials, which govern the overall performance of energy, environment, electronic fields, is attracting much research interest. Thus, the efforts of many researchers are focused on the development of new, implementable, and easily methods of fabrication of such nanomaterials for electrodes. However, to further enhance their electrochemical, chemical, and electrical properties, compositional and morphological optimizations should be taken into deliberation in a way that offers high surface area chemical/physical stability during the reactions. Therefore, many groups have put enormous effort into synthesizing various nanomaterial-based electrodes. These structures provide more effective contact sites in the systems, exhibiting greatly improved performance over bulk materials.

This Special Issue of Nanomaterials, entitled “Nanomaterials Electrodes,” aims to collect a compilation of articles that prominently demonstrate the continuous efforts in developing advanced nanomaterial-based electrodes for the energy, environment, and electronic fields. The topics cover a wide range of research fields, including electrodes from nanomaterials, from nanofabrication, and device design, in the forms of reviews, communications, and academic articles.

Prof. Geon−Hyoung An
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

  • Electrodes
  • Nanomaterials
  • Electrochemistry
  • Energy
  • Environment
  • Electronic device

Published Papers (3 papers)

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Research

12 pages, 1873 KiB  
Article
Nanostructured Hybrid Metal Mesh as Transparent Conducting Electrodes: Selection Criteria Verification in Perovskite Solar Cells
by John Mohanraj, Chetan R. Singh, Tanaji P. Gujar, C. David Heinrich and Mukundan Thelakkat
Nanomaterials 2021, 11(7), 1783; https://doi.org/10.3390/nano11071783 - 9 Jul 2021
Cited by 5 | Viewed by 3262
Abstract
Nanostructured metal mesh structures demonstrating excellent conductivity and high transparency are one of the promising transparent conducting electrode (TCE) alternatives for indium tin oxide (ITO). Often, these metal nanostructures are to be employed as hybrids along with a conducting filler layer to collect [...] Read more.
Nanostructured metal mesh structures demonstrating excellent conductivity and high transparency are one of the promising transparent conducting electrode (TCE) alternatives for indium tin oxide (ITO). Often, these metal nanostructures are to be employed as hybrids along with a conducting filler layer to collect charge carriers from the network voids and to minimize current and voltage losses. The influence of filler layers on dictating the extent of such ohmic loss is complex. Here, we used a general numerical model to correlate the sheet resistance of the filler, lateral charge transport distance in network voids, metal mesh line width and ohmic losses in optoelectronic devices. To verify this correlation, we prepared gold or copper network electrodes with different line widths and different filler layers, and applied them as TCEs in perovskite solar cells. We show that the photovoltaic parameters scale with the hybrid metal network TCE properties and an Au-network or Cu-network with aluminum-doped zinc oxide (AZO) filler can replace ITO very well, validating our theoretical predictions. Thus, the proposed model could be employed to select an appropriate filler layer for a specific metal mesh electrode geometry and dimensions to overcome the possible ohmic losses in optoelectronic devices. Full article
(This article belongs to the Special Issue Nanomaterial Electrodes)
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11 pages, 7623 KiB  
Article
Fabrication of Flexible Electrode with Sub-Tenth Micron Thickness Using Heat-Induced Peelable Pressure-Sensitive Adhesive Containing Amide Groups
by Hyebeom Shin, Eunseong Yang, Yong-Hoon Kim, Min-Gi Kwak and Youngmin Kim
Nanomaterials 2021, 11(5), 1250; https://doi.org/10.3390/nano11051250 - 10 May 2021
Cited by 2 | Viewed by 2382
Abstract
In response to the increasing demand for flexible devices, there is increasing effort to manufacture flexible electrodes. However, the difficulty of handling a thin film is an obstacle to the production of flexible electrodes. In this study, a heat-induced peelable pressure-sensitive adhesive (h-PSA) [...] Read more.
In response to the increasing demand for flexible devices, there is increasing effort to manufacture flexible electrodes. However, the difficulty of handling a thin film is an obstacle to the production of flexible electrodes. In this study, a heat-induced peelable pressure-sensitive adhesive (h-PSA) was fabricated and used to manufacture a flexible electrode with sub-tenth micron thickness. Unlike the control PSA, the incorporation of amide groups made the h-PSA fail through adhesive failure at temperatures ranging from 20 to 80 °C. Compared to the peeling adhesion (1719 gf/in) of h-PSA measured at 20 °C, the value (171 gf/in) measured at 80 °C was decreased by one order of magnitude. Next, the 8 μm thick polyethylene terephthalate (PET) film was attached on a thick substrate (50 μm) via h-PSA, and Mo/Al/Mol patterns were fabricated on the PET film through sputtering, photolithography, and wet-etching processes. The thick substrate alleviated the difficulty of handling the thin PET film during the electrode fabrication process. Thanks to the low peel force and clean separation of the h-PSA at 80 °C, the flexible electrode of metal patterns on the PET (8 μm) film was isolated from the substrate with little change (<1%) in electrical conductivity. Finally, the mechanical durability of the flexible electrode was evaluated by a U-shape folding test, and no cracking or delamination was observed after 10,000 test cycles. Full article
(This article belongs to the Special Issue Nanomaterial Electrodes)
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14 pages, 1524 KiB  
Article
Peculiarities of Low-Temperature Behavior of Liquids Confined in Nanostructured Silicon-Based Material
by Vladimir Bardushkin, Andrey Kochetygov, Yulia Shilyaeva, Olga Volovlikova, Alexey Dronov and Sergey Gavrilov
Nanomaterials 2020, 10(11), 2151; https://doi.org/10.3390/nano10112151 - 28 Oct 2020
Cited by 5 | Viewed by 1773
Abstract
This study is devoted to the confinement effects on freezing and melting in electrochemical systems containing nanomaterial electrodes and liquid electrolytes. The melting of nanoparticles formed upon freezing of liquids confined in pores of disordered nanostructured n-type silicon has been studied by [...] Read more.
This study is devoted to the confinement effects on freezing and melting in electrochemical systems containing nanomaterial electrodes and liquid electrolytes. The melting of nanoparticles formed upon freezing of liquids confined in pores of disordered nanostructured n-type silicon has been studied by low-temperature differential scanning calorimetry. Experimental results obtained for deionized water, an aqueous solution of potassium sulfate, and n-decane are presented. A model is proposed for predicting the melting point of nanoparticles formed during freezing of liquids inside the pores of a disordered nanostructured material. The model is based on the classical thermodynamic concept of the phase transition temperature dependence on the particle size. It takes into account the issues arising when a liquid is dispersed in a matrix of another material: the effect of mechanical stress resulted from the difference in the thermal linear expansion coefficients at a temperature gradient, the effect of the volumetric liquid content in the matrix, the presence of a nonfreezing liquid layer inside the pores, and the effect of wettability of the matrix with the liquid. Model calculations for water and n-decane confined in nanostructured silicon matrix have been carried out considering the volumetric liquid content. The results obtained have been compared with the differential scanning calorimetry data. Full article
(This article belongs to the Special Issue Nanomaterial Electrodes)
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