Special Issue "Three-dimensional Nanomaterials for Energy Storage and Conversions"

A special issue of Nanomaterials (ISSN 2079-4991).

Deadline for manuscript submissions: closed (1 June 2018)

Special Issue Editors

Guest Editor
Prof. Masaharu Nakayama

Department of Applied Chemistry, Faculty of Engineering, Yamaguchi University, 2-16-1 Tokiwadai, Ube 755-8611, Japan
Website | E-Mail
Fax: +81-836-85-9201
Interests: fabrication of metal oxides by electrochemical approaches; micro/nano-structuring by electrochemical approaches; development of next-generation capacitors; development of electrocatalystsand sensors
Guest Editor
Prof. Minato Egashira

College of Bioresource Sciences, Nihon University, Fujisawa, Kanagawa 252-0880, Japan
Website | E-Mail
Interests: batteries; electrochemical capacitors; iron electrode; aqueous batteries; nanocarbons; electrochemical devices

Special Issue Information

Dear Colleagues,

In recent years, three-dimensional nanomaterials have attracted extensive attention as electrode materials for energy storage and conversion applications, including rechargeable batteries, supercapacitors, and electrocatalysts. Their characteristic structures and properties can be achieved by a unique growth process of materials and/or the use of substrates with 3D structures. The designed nanomaterials can allow the penetration of electrolytes, shorten the ion diffusion distance, and improve electron transfer. Moreover, a porous 3D electrode increases the mass loading of electroactive materials. In this Special Issue, we would like to invite you to submit an original research paper or review paper, which deals with the synthesis, characterization, and applications of energy storage and conversion of three-dimensional nanomaterials consisting of, for example, carbon (particularly, carbon nanotubes, graphene, and mesoporous carbon), metals and metal oxides, conducting polymers, metal organic frameworks, and their hybrids.

Prof. Masaharu Nakayama
Prof. Minato Egashira
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 papers will be 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 monthly 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 1500 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

  • Three-dimensional
  • Energy storage and conversion
  • Batteries
  • Supercapacitors
  • Electrocatalysts
  • Carbon
  • Metal oxides
  • Nanohybrids

Published Papers (7 papers)

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Research

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Open AccessArticle Nanoporous Ni with High Surface Area for Potential Hydrogen Storage Application
Nanomaterials 2018, 8(6), 394; https://doi.org/10.3390/nano8060394
Received: 27 April 2018 / Revised: 19 May 2018 / Accepted: 29 May 2018 / Published: 1 June 2018
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Abstract
Nanoporous metals with considerable specific surface areas and hierarchical pore structures exhibit promising applications in the field of hydrogen storage, electrocatalysis, and fuel cells. In this manuscript, a facile method is demonstrated for fabricating nanoporous Ni with a high surface area by using
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Nanoporous metals with considerable specific surface areas and hierarchical pore structures exhibit promising applications in the field of hydrogen storage, electrocatalysis, and fuel cells. In this manuscript, a facile method is demonstrated for fabricating nanoporous Ni with a high surface area by using SiO2 aerogel as a template, i.e., electroless plating of Ni into an SiO2 aerogel template followed by removal of the template at moderate conditions. The effects of the prepared conditions, including the electroless plating time, temperature of the structure, and the magnetism of nanoporous Ni are investigated in detail. The resultant optimum nanoporous Ni with a special 3D flower-like structure exhibited a high specific surface area of about 120.5 m2/g. The special nanoporous Ni exhibited a promising prospect in the field of hydrogen storage, with a hydrogen capacity of 0.45 wt % on 4.5 MPa at room temperature. Full article
(This article belongs to the Special Issue Three-dimensional Nanomaterials for Energy Storage and Conversions)
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Open AccessArticle High Performance of Supercapacitor from PEDOT:PSS Electrode and Redox Iodide Ion Electrolyte
Nanomaterials 2018, 8(5), 335; https://doi.org/10.3390/nano8050335
Received: 18 April 2018 / Revised: 5 May 2018 / Accepted: 9 May 2018 / Published: 16 May 2018
Cited by 1 | PDF Full-text (4060 KB) | HTML Full-text | XML Full-text
Abstract
Insufficient energy density and poor cyclic stability is still challenge for conductive polymer-based supercapacitor. Herein, high performance electrochemical system has been assembled by combining poly (3,4-ethylenedioxythiophene) (PEDOT):poly (styrene sulfonate) (PSS) redox electrode and potassium iodide redox electrolyte, which provide the maximum specific capacity
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Insufficient energy density and poor cyclic stability is still challenge for conductive polymer-based supercapacitor. Herein, high performance electrochemical system has been assembled by combining poly (3,4-ethylenedioxythiophene) (PEDOT):poly (styrene sulfonate) (PSS) redox electrode and potassium iodide redox electrolyte, which provide the maximum specific capacity of 51.3 mAh/g and the retention of specific capacity of 87.6% after 3000 cycles due to the synergic effect through a simultaneous redox reaction both in electrode and electrolyte, as well as the catalytic activity for reduction of triiodide of the PEDOT:PSS. Full article
(This article belongs to the Special Issue Three-dimensional Nanomaterials for Energy Storage and Conversions)
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Open AccessArticle Synthesis of Pt–Pd Bimetallic Porous Nanostructures as Electrocatalysts for the Methanol Oxidation Reaction
Nanomaterials 2018, 8(4), 208; https://doi.org/10.3390/nano8040208
Received: 26 February 2018 / Revised: 23 March 2018 / Accepted: 26 March 2018 / Published: 30 March 2018
Cited by 1 | PDF Full-text (22120 KB) | HTML Full-text | XML Full-text
Abstract
Pt-based bimetallic nanostructures have attracted a great deal of attention due to their unique nanostructures and excellent catalytic properties. In this study, we prepared porous Pt–Pd nanoparticles using an efficient, one-pot co-reduction process without using any templates or toxic reactants. In this process,
[...] Read more.
Pt-based bimetallic nanostructures have attracted a great deal of attention due to their unique nanostructures and excellent catalytic properties. In this study, we prepared porous Pt–Pd nanoparticles using an efficient, one-pot co-reduction process without using any templates or toxic reactants. In this process, Pt–Pd nanoparticles with different nanostructures were obtained by adjusting the temperature and ratio of the two precursors; and their catalytic properties for the oxidation of methanol were studied. The porous Pt–Pd nanostructures showed better electrocatalytic activity for the oxidation of methanol with a higher current density (0.67 mA/cm2), compared with the commercial Pt/C catalyst (0.31 mA/cm2). This method provides one easy pathway to economically prepare different alloy nanostructures for various applications. Full article
(This article belongs to the Special Issue Three-dimensional Nanomaterials for Energy Storage and Conversions)
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Open AccessArticle Three-Dimensional SnS Decorated Carbon Nano-Networks as Anode Materials for Lithium and Sodium Ion Batteries
Nanomaterials 2018, 8(3), 135; https://doi.org/10.3390/nano8030135
Received: 26 December 2017 / Revised: 14 February 2018 / Accepted: 24 February 2018 / Published: 28 February 2018
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Abstract
The three-dimensional (3D) SnS decorated carbon nano-networks (SnS@C) were synthesized via a facile two-step method of freeze-drying combined with post-heat treatment. The lithium and sodium storage performances of above composites acting as anode materials were investigated. As anode materials for lithium ion batteries,
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The three-dimensional (3D) SnS decorated carbon nano-networks (SnS@C) were synthesized via a facile two-step method of freeze-drying combined with post-heat treatment. The lithium and sodium storage performances of above composites acting as anode materials were investigated. As anode materials for lithium ion batteries, a high reversible capacity of 780 mAh·g−1 for SnS@C composites can be obtained at 100 mA·g−1 after 100 cycles. Even cycled at a high current density of 2 A·g−1, the reversible capacity of this composite can be maintained at 610 mAh·g−1 after 1000 cycles. The initial charge capacity for sodium ion batteries can reach 333 mAh·g−1, and it retains a reversible capacity of 186 mAh·g−1 at 100 mA·g−1 after 100 cycles. The good lithium or sodium storage performances are likely attributed to the synergistic effects of the conductive carbon nano-networks and small SnS nanoparticles. Full article
(This article belongs to the Special Issue Three-dimensional Nanomaterials for Energy Storage and Conversions)
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Open AccessArticle Synthesis and Electrochemical Properties of Two-Dimensional RGO/Ti3C2Tx Nanocomposites
Nanomaterials 2018, 8(2), 80; https://doi.org/10.3390/nano8020080
Received: 16 January 2018 / Revised: 25 January 2018 / Accepted: 29 January 2018 / Published: 31 January 2018
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Abstract
MXene is a new type of two-dimensional layered material. Herein, a GO/Ti3C2Tx nanocomposite was prepared by a simple liquid phase method, and the obtained GO/Ti3C2Tx was transformed into RGO/Ti3C2T
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MXene is a new type of two-dimensional layered material. Herein, a GO/Ti3C2Tx nanocomposite was prepared by a simple liquid phase method, and the obtained GO/Ti3C2Tx was transformed into RGO/Ti3C2Tx under high temperature with Ar/H2. The prepared samples were characterized using X-ray diffraction (XRD), Raman measurement, scanning electron microscopy (SEM), energy disperse spectroscopy (EDS), and X-ray photoelectron spectroscopy (XPS). As an electrode material in lithium-ion batteries, the RGO/Ti3C2Tx nanocomposite exhibited an excellent electrochemical performance and an excellent rate performance. Compared to pure Ti3C2Tx, the nanocomposite had a better reversible capacity at different current densities and had no attenuation after 200 cycles, which is one time higher than pure Ti3C2Tx. The improvement in the specific capacity was due to the excellent electrical conductivity and the unique structure of RGO, in which a charge transfer bridge was built among the Ti3C2Tx flakes. Such a bridge shortened the transmission distance of the electrons and ions and effectively controlled the restacking of the laminated materials. Full article
(This article belongs to the Special Issue Three-dimensional Nanomaterials for Energy Storage and Conversions)
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Open AccessArticle Novel Mesoporous Flowerlike Iron Sulfide Hierarchitectures: Facile Synthesis and Fast Lithium Storage Capability
Nanomaterials 2017, 7(12), 431; https://doi.org/10.3390/nano7120431
Received: 8 November 2017 / Revised: 28 November 2017 / Accepted: 1 December 2017 / Published: 6 December 2017
Cited by 2 | PDF Full-text (4351 KB) | HTML Full-text | XML Full-text | Supplementary Files
Abstract
The 3D flowerlike iron sulfide (F-FeS) is successfully synthesized via a facile one-step sulfurization process, and the electrochemical properties as anode materials for lithium ion batteries (LIBs) are investigated. Compared with bulk iron sulfide, we find that the unique structural features, overall flowerlike
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The 3D flowerlike iron sulfide (F-FeS) is successfully synthesized via a facile one-step sulfurization process, and the electrochemical properties as anode materials for lithium ion batteries (LIBs) are investigated. Compared with bulk iron sulfide, we find that the unique structural features, overall flowerlike structure, composed of several dozen nanopetals and numerous small size iron sulfide particles embedded within the fine nanopetals, and hierarchical pore structure features provide signification improvements in lithium storage performance, with a high-rate discharge capacity of 779.0 mAh g−1 at a rate of 5 A g−1, due to effectively alleviating the volume expansion during the lithiation/delithiation process, and shorting the diffusion length of both lithium ion and electron. Especially, an excellent cycling stability are achieved, a high discharge capacity of 890 mAh g−1 retained at a rate of 1.0 A g−1, suggesting its promising applications in lithium ion batteries (LIBs). Full article
(This article belongs to the Special Issue Three-dimensional Nanomaterials for Energy Storage and Conversions)
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Review

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Open AccessReview Printable Nanomaterials for the Fabrication of High-Performance Supercapacitors
Nanomaterials 2018, 8(7), 528; https://doi.org/10.3390/nano8070528
Received: 31 May 2018 / Revised: 3 July 2018 / Accepted: 10 July 2018 / Published: 13 July 2018
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Abstract
In recent years, supercapacitors are attracting great attention as one kind of electrochemical energy storage device, which have a high power density, a high energy density, fast charging and discharging, and a long cycle life. As a solution processing method, printing technology is
[...] Read more.
In recent years, supercapacitors are attracting great attention as one kind of electrochemical energy storage device, which have a high power density, a high energy density, fast charging and discharging, and a long cycle life. As a solution processing method, printing technology is widely used to fabricate supercapacitors. Printable nanomaterials are critical to the fabrication of high-performance supercapacitors by printing technology. In this work, the advantages of printing technology are summarized. Moreover, various nanomaterials used to fabricate supercapacitors by printing technology are presented. Finally, the remaining challenges and broad research as well as application prospects in printing high-performance supercapacitors with nanomaterials are proposed. Full article
(This article belongs to the Special Issue Three-dimensional Nanomaterials for Energy Storage and Conversions)
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