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Nanomaterials
Special Issues
Layered Nanomaterials for Energy Storage and Conversion
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Layered Nanomaterials for 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 (10 February 2024) | Viewed by 3965

Special Issue Editor

Dr. Xu Yu

E-Mail Website
Guest Editor
School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 250002, China
Interests: carbon nanomaterials; layered materials; energy storage; energy conversion; heterostructures
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Efficient energy storage and conversion is particularly important to alleviating energy shortage and satisfying energy demand. Layered nanomaterials, such as transition metal dichalcogenides, graphene, MXenes, layered hydroxides, etc., have attracted a significant degree of attention in energy-related fields, which is attributable to their unique structural characteristics and surface chemistry. The dominant structural characteristics can be assigned to the following aspects: 1) that the interlamellar spacing is not only favorable for different ion accommodation, but also acts as fast channels for ion/electron migration; 2) that in order to overcome the weak interlayer bonding forces by exfoliation, the optimized layer number and particles size are important as they can affect the electrochemical properties of electrode materials; and 3) that the surface chemistry of layered nanomaterials at nanoscaling level can be adjust, like the defects, bandgap.

The scope of this Special Issue aims to publish the latest developments in layered nanomaterials and their application in energy storage and conversion system, e.g., lithium-ion batteries, supercapacitors, and electrocatalysts. It will be helpful to intensify the relationship of academic knowledge and practical applications, and provide new ideas for expanding the scope of the applications of this technologies. The topic of this Special Issue is listed as below.

(1) The novel synthetic technology for the exfoliation of layered nanomaterials.

(2) Layered nanomaterials for lithium-ion battery, lithium-sulfur battery, sodium-ion battery, etc.

(3) Nanostructured carbon materials for energy storage.

(4) High-energy density of supercapacitors based on layered nanomaterials.

(5) Layered nanomaterials for electrocatalysts, like ORR, OER, HER, etc.

Dr. Xu Yu
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

  • layered nanomaterials
  • energy storage
  • energy conversion
  • MXene
  • metal sulfides
  • layered hydroxides
  • nanoscaling level
  • nanostructures
  • defect construction

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Published Papers (2 papers)

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Research

12 pages, 2764 KiB  
Article
Graphene Architecture-Supported Porous Cobalt–Iron Fluoride Nanosheets for Promoting the Oxygen Evolution Reaction
by Yanhui Lu, Xu Han, Yiting Zhang and Xu Yu
Nanomaterials 2024, 14(1), 16; https://doi.org/10.3390/nano14010016 - 20 Dec 2023
Cited by 1 | Viewed by 1309
Abstract
The design of efficient oxygen evolution reaction (OER) electrocatalysts is of great significance for improving the energy efficiency of water electrolysis for hydrogen production. In this work, low-temperature fluorination and the introduction of a conductive substrate strategy greatly improve the OER performance in [...] Read more.
The design of efficient oxygen evolution reaction (OER) electrocatalysts is of great significance for improving the energy efficiency of water electrolysis for hydrogen production. In this work, low-temperature fluorination and the introduction of a conductive substrate strategy greatly improve the OER performance in alkaline solutions. Cobalt–iron fluoride nanosheets supported on reduced graphene architectures are constructed by a one-step solvothermal method and further low-temperature fluorination treatment. The conductive graphene architectures can increase the conductivity of catalysts, and the transition metal ions act as electron acceptors to reduce the Fermi level of graphene, resulting in a low OER overpotential. The surface of the catalyst becomes porous and rough after fluorination, which can expose more active sites and improve the OER performance. Finally, the catalyst exhibits excellent catalytic performance in 1 M KOH, and the overpotential is 245 mV with a Tafel slope of 90 mV dec−1, which is better than the commercially available IrO2 catalyst. The good stability of the catalyst is confirmed with a chronoamperometry (CA) test and the change in surface chemistry is elucidated by comparing the XPS before and after the CA test. This work provides a new strategy to construct transition metal fluoride-based materials for boosted OER catalysts. Full article
(This article belongs to the Special Issue Layered Nanomaterials for Energy Storage and Conversion)
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12 pages, 3204 KiB  
Article
Constructing Abundant Oxygen-Containing Functional Groups in Hard Carbon Derived from Anthracite for High-Performance Sodium-Ion Batteries
by Yaya Xu, Donglei Guo, Yuan Luo, Jiaqi Xu, Kailong Guo, Wei Wang, Guilong Liu, Naiteng Wu, Xianming Liu and Aimiao Qin
Nanomaterials 2023, 13(23), 3002; https://doi.org/10.3390/nano13233002 - 22 Nov 2023
Cited by 8 | Viewed by 2295
Abstract
Hard carbon is regarded as one of the greatest potential anode materials for sodium-ion batteries (SIBs) because of its affordable price and large layer spacing. However, its poor initial coulombic efficiency (ICE) and low specific capacity severely restrict its practical commercialization in SIBs. [...] Read more.
Hard carbon is regarded as one of the greatest potential anode materials for sodium-ion batteries (SIBs) because of its affordable price and large layer spacing. However, its poor initial coulombic efficiency (ICE) and low specific capacity severely restrict its practical commercialization in SIBs. In this work, we successfully constructed abundant oxygen-containing functional groups in hard carbon by using pre-oxidation anthracite as the precursor combined with controlling the carbonization temperature. The oxygen-containing functional groups in hard carbon can increase the reversible Na+ adsorption in the slope region, and the closed micropores can be conducive to Na+ storage in the low-voltage platform region. As a result, the optimal sample exhibits a high initial reversible sodium storage capacity of 304 mAh g−1 at 0.03 A g−1, with an ICE of 67.29% and high capacitance retention of 95.17% after 100 cycles. This synergistic strategy can provide ideas for the design of high-performance SIB anode materials with the intent to regulate the oxygen content in the precursor. Full article
(This article belongs to the Special Issue Layered Nanomaterials for Energy Storage and Conversion)
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