Advanced Nanostructured Electrode Materials for Energy Storage and Conversion Systems

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

Deadline for manuscript submissions: 20 October 2024 | Viewed by 1494

Special Issue Editor


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Guest Editor
School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei 230009, China
Interests: low-dimensional nanomaterials; modification of functional nanomaterials; energy conversion

Special Issue Information

Dear Colleagues,

This Special Issue will focus on nanostructured materials, their synthesis, applications, properties, and novel insights. The field of nanostructured electrode materials is a new and fascinating area of research that is significantly advancing technology and having a variety of applications. More energy-efficient technologies are in great demand for practical applications despite ongoing obstacles.

This Special Issue aims to provide an overview of the most recent developments in novel electrode nanomaterials and nanodevices. Research areas may include (but are not limited to) the following:

  1. nanostructured materials and their applications across lithium, sodium, and zinc batteries;
  2. carbon-based nanomaterials;
  3. nanoalloys;
  4. innovative chemical synthesis, processing, performances, and characterization;
  5. supercapacitors;
  6. graphene electrode materials and composites;
  7. functional nanomaterials;
  8. electrocatalysts.

This Special Issue welcomes articles, reviews, and communication manuscript.

Prof. Dr. Yarong Zheng
Guest Editor

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Keywords

  • electrode material
  • energy storage
  • batteries
  • electrode
  • cathode
  • anode
  • fuel cells

Published Papers (2 papers)

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Research

13 pages, 9098 KiB  
Article
Porous Ruthenium–Tungsten–Zinc Nanocages for Efficient Electrocatalytic Hydrogen Oxidation Reaction in Alkali
by Xiandi Sun, Zhiyuan Cheng, Hang Liu, Siyu Chen and Ya-Rong Zheng
Nanomaterials 2024, 14(9), 808; https://doi.org/10.3390/nano14090808 - 6 May 2024
Viewed by 476
Abstract
With the rapid development of anion exchange membrane technology and the availability of high-performance non-noble metal cathode catalysts in alkaline media, the commercialization of anion exchange membrane fuel cells has become feasible. Currently, anode materials for alkaline anion-exchange membrane fuel cells still rely [...] Read more.
With the rapid development of anion exchange membrane technology and the availability of high-performance non-noble metal cathode catalysts in alkaline media, the commercialization of anion exchange membrane fuel cells has become feasible. Currently, anode materials for alkaline anion-exchange membrane fuel cells still rely on platinum-based catalysts, posing a challenge to the development of efficient low-Pt or Pt-free catalysts. Low-cost ruthenium-based anodes are being considered as alternatives to platinum. However, they still suffer from stability issues and strong oxophilicity. Here, we employ a metal–organic framework compound as a template to construct three-dimensional porous ruthenium–tungsten–zinc nanocages via solvothermal and high-temperature pyrolysis methods. The experimental results demonstrate that this porous ruthenium–tungsten–zinc nanocage with an electrochemical surface area of 116 m2 g−1 exhibits excellent catalytic activity for hydrogen oxidation reaction in alkali, with a kinetic density 1.82 times and a mass activity 8.18 times higher than that of commercial Pt/C, and a good catalytic stability, showing no obvious degradation of the current density after continuous operation for 10,000 s. These findings suggest that the developed catalyst holds promise for use in alkaline anion-exchange membrane fuel cells. Full article
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9 pages, 8383 KiB  
Communication
Synthesis of ZnFe2O4 Nanospheres with Tunable Morphology for Lithium Storage
by Filipp S. Volkov, Mikhail A. Kamenskii, Elena G. Tolstopjatova, Lusine A. Voskanyan, Natalia P. Bobrysheva, Olga M. Osmolovskaya and Svetlana N. Eliseeva
Nanomaterials 2023, 13(24), 3126; https://doi.org/10.3390/nano13243126 - 13 Dec 2023
Viewed by 779
Abstract
ZnFe2O4 (ZFO) nanospheres with complex structures have been synthesized by a one-step simple solvothermal method using two different types of precursors—metal chlorides and nitrates —and were fully characterized by XRD, SEM, XPS, and EDS. The ZFO nanospheres synthesized from chloride [...] Read more.
ZnFe2O4 (ZFO) nanospheres with complex structures have been synthesized by a one-step simple solvothermal method using two different types of precursors—metal chlorides and nitrates —and were fully characterized by XRD, SEM, XPS, and EDS. The ZFO nanospheres synthesized from chloride salts (ZFO_C) were loose with a size range of 100–200 nm, while the ZFO nanospheres synthesized from nitrate salts (ZFO_N) were dense with a size range of 300–500 nm but consisted of smaller nanoplates. The different morphologies may be caused by the different hydrolysis rates and different stabilizing effects of chloride and nitrate ions interacting with the facets of forming nanoparticles. Electrochemical tests of nitrate-based ZFO nanospheres as anode materials for lithium-ion batteries demonstrated their higher cyclic stability. The ZFO_C and ZFO_N samples have initial specific discharge/charge capacities of 1354/1020 and 1357/954 mAh∙g−1, respectively, with coulombic efficiencies of 75% and 71%. By the 100th cycle, ZFO_N has a capacity of 276 mAh∙g−1, and for ZFO_C, only 210 mAh∙g−1 remains after 100 cycles. Full article
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