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Nanomaterials
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Nanostructured Materials for Electrochemical Energy Storage and Conversion
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Nanostructured Materials for Electrochemical Energy Storage and Conversion

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

Deadline for manuscript submissions: closed (20 May 2024) | Viewed by 2720

Special Issue Editor

Prof. Dr. Xiaohui Guo

E-Mail Website
Guest Editor
College of Chemistry & Materials Science, Northwest University, Xi’an 710127, China
Interests: nanomaterials; electrocatalyst; energy storage; hydrogen evolution reaction; oxygen evolution reaction

Special Issue Information

Dear Colleagues,

Electrochemical energy storage and conversion technologies, such as rechargeable batteries (Li-ion, Li-oxygen, Li-sulfur, Na-ion, and redox flow batteries), supercapacitors, and membrane electrolytes for fuel cells, are promising solutions to global energy and environmental challenges. Nanostructured materials, with their large surface area, high reactivity, and tunable properties, can significantly improve the electrochemical performance of these devices.

This Special Issue focuses on the design, synthesis, characterization, and application of nanostructured materials for electrochemical energy storage and conversion devices. We welcome contributions that address, but are not limited to, the following topics:

  • Nanostructured electrocatalysts for the oxygen reduction reaction (ORR), the oxygen evolution reaction (OER), the hydrogen evolution reaction (HER), and other relevant reactions;
  • Nanostructured materials as electrodes, electrolytes, fuel cells, supercapacitors, and batteries;
  • Novel nanostructures and nanocomposites for enhancing the electrochemical performance, stability, durability, and selectivity of electrocatalysts and electrodes;
  • Challenges and prospects of nanostructured materials for electrochemical energy storage and conversion technologies.

We look forward to receiving your contributions.

Prof. Dr. Xiaohui Guo
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
  • batteries
  • supercapacitors
  • electrochemical
  • energy storage and conversion
  • electrocatalyst
  • specific capacitance
  • catalytic activity
  • stability

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Further information on MDPI's Special Issue polices can be found here.

Published Papers (2 papers)

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Research

11 pages, 5450 KiB  
Article
Mo-Doped Ni/C Catalyst for Improved Simultaneous Production of Hydrogen and Carbon Nanotubes through Ethanol Decomposition
by Jinxiang Diao, Xiaojie Liu, Xianmeng Wang, Yuzhu Zhang, Jingkai Yue and Hui Wang
Nanomaterials 2024, 14(14), 1205; https://doi.org/10.3390/nano14141205 - 16 Jul 2024
Viewed by 937
Abstract
A Mo-Ni/C catalyst was developed and assessed in terms of the decomposition of ethanol to produce multi-wall carbon nanotubes (MWCNTs) and hydrogen. The catalyst utilized different molar ratios of Mo:Ni (1:9, 2:8, and 3:7), with Mo acting as a dopant to enhance the [...] Read more.
A Mo-Ni/C catalyst was developed and assessed in terms of the decomposition of ethanol to produce multi-wall carbon nanotubes (MWCNTs) and hydrogen. The catalyst utilized different molar ratios of Mo:Ni (1:9, 2:8, and 3:7), with Mo acting as a dopant to enhance the MWCNT yield and Ni acting as the primary active phase for MWCNT formation. Among the tested ratios, the 2:8 Mo:Ni ratio exhibited the optimal performance, yielding 86% hydrogen and high-quality MWCNTs. In addition to hydrogen, the process also generated CO, CH4, and CO2. Gas chromatography (GC) was employed to analyze the influence of the Mo:Ni ratio on gas production and selectivity, while the quality of the resulting MWCNTs was evaluated using SEM, Raman spectroscopy, and TEM analyses. Full article
(This article belongs to the Special Issue Nanostructured Materials for Electrochemical Energy Storage and Conversion)
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11 pages, 2515 KiB  
Article
Three-Dimensional Vanadium and Nitrogen Dual-Doped Ti3C2 Film with Ultra-High Specific Capacitance and High Volumetric Energy Density for Zinc-Ion Hybrid Capacitors
by Xinhui Jin, Siliang Yue, Jiangcheng Zhang, Liang Qian and Xiaohui Guo
Nanomaterials 2024, 14(6), 490; https://doi.org/10.3390/nano14060490 - 8 Mar 2024
Cited by 2 | Viewed by 1347
Abstract
Zinc-ion hybrid capacitors (ZICs) can achieve high energy and power density, ultralong cycle life, and a wide operating voltage window, and they are widely used in wearable devices, portable electronics devices, and other energy storage fields. The design of advanced ZICs with high [...] Read more.
Zinc-ion hybrid capacitors (ZICs) can achieve high energy and power density, ultralong cycle life, and a wide operating voltage window, and they are widely used in wearable devices, portable electronics devices, and other energy storage fields. The design of advanced ZICs with high specific capacity and energy density remains a challenge. In this work, a novel kind of V, N dual-doped Ti3C2 film with a three-dimensional (3D) porous structure (3D V-, N-Ti3C2) based on Zn-ion pre-intercalation can be fabricated via a simple synthetic process. The stable 3D structure and heteroatom doping provide abundant ion transport channels and numerous surface active sites. The prepared 3D V-, N-Ti3C2 film can deliver unexpectedly high specific capacitance of 855 F g−1 (309 mAh g−1) and demonstrates 95.26% capacitance retention after 5000 charge/discharge cycles. In addition, the energy storage mechanism of 3D V-, N-Ti3C2 electrodes is the chemical adsorption of H+/Zn2+, which is confirmed by ex situ XRD and ex situ XPS. ZIC full cells with a competitive energy density (103 Wh kg−1) consist of a 3D V-, N-Ti3C2 cathode and a zinc foil anode. The impressive results provide a feasible strategy for developing high-performance MXene-based energy storage devices in various energy-related fields. Full article
(This article belongs to the Special Issue Nanostructured Materials for Electrochemical Energy Storage and Conversion)
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