Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
7.4
4.2
Journals
Molecules
Special Issues
2D Materials: Synthesis and Energy Applications
molecules-logo
Submit to Molecules Review for Molecules Propose a Special Issue

Journal Menu

► Journal Menu

Journal Browser

► Journal Browser
share announcement

2D Materials: Synthesis and Energy Applications

A special issue of Molecules (ISSN 1420-3049). This special issue belongs to the section "Inorganic Chemistry".

Deadline for manuscript submissions: closed (31 December 2022) | Viewed by 13863

Special Issue Editor

Dr. Minghao Yu

grade E-Mail Website
Guest Editor
Faculty of Chemistry and Food Chemistry, Center for Advancing Electronics Dresden (cfaed), Technische Universität Dresden, 01062 Dresden, Germany
Interests: 2D materials; electrochemical energy storage; supercapacitors; rechargeable batteries; functional battery devices; electrocatalysts

Special Issue Information

Dear Colleagues,

Following an extensive exploration of graphene, two-dimensional (2D) materials have been brought into the spotlight of material science. Growing research efforts have triggered the explosive development of a broad diversity of 2D materials, including both 2D carbon-rich materials (e.g., 2D polymers, 2D metal-organic frameworks, and 2D covalent organic frameworks) and 2D inorganic materials. Atom-thick 2D materials feature a large surface-to-volume ratio, high atom exposure, tunable surface chemistry, and favorable mechanical properties. These features open the door for the application of 2D materials in numerous fields, particularly energy-related applications (mainly energy storage and energy conversion).

This Special Issue will cover promising and novel research trends in the synthesis of 2D materials and the exploration of their energy-related applications. The topics of interest include, but are not limited to the following:

  • Top-down fabrication of 2D materials.
  • Bottom-up synthesis of 2D materials or 2D heterostructures.
  • Exploration of 2D materials for electrochemical energy storage (supercapacitors, rechargeable batteries, and others).
  • Exploration of 2D materials for energy conversion (electrocatalysis, photo-electrocatalysis, and others).

Dr. Minghao 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. Molecules 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 2700 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

  • 2D materials
  • 2D heterostructures
  • Energy conversion
  • Energy storage
  • Supercapacitors
  • Rechargeable batteries
  • Electrocatalysis
  • Photo-electrocatalysis

Published Papers (5 papers)

Download All Papers
Order results
Result details
Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:

Research

Jump to: Review

11 pages, 2795 KiB  
Article
One-Pot Synthesis of NiSe2 with Layered Structure for Nickel-Zinc Battery
by Shi Chen, Yifeng Huang, Haoran Li, Fuxin Wang, Wei Xu, Dezhou Zheng and Xihong Lu
Molecules 2023, 28(3), 1098; https://doi.org/10.3390/molecules28031098 - 21 Jan 2023
Cited by 1 | Viewed by 1922
Abstract
Transition metal organic framework materials and their selenides are considered to be one of the most promising cathode materials for nickel-zinc (denoted as Ni-Zn) batteries due to their low cost, environmental friendliness, and controllable microstructure. Yet, their low capacity and poor cycling performance [...] Read more.
Transition metal organic framework materials and their selenides are considered to be one of the most promising cathode materials for nickel-zinc (denoted as Ni-Zn) batteries due to their low cost, environmental friendliness, and controllable microstructure. Yet, their low capacity and poor cycling performance severely restricts their further development. Herein, we developed a simple one-pot hydrothermal process to directly synthesize NiSe2 (denotes as NiSe2-X based on the molar amount of SeO2 added) stacked layered sheets. Benefiting from the peculiar architectures, the fabricated NiSe2−1//Zn battery based on NiSe2 and the Zn plate exhibits a high specific capacity of 231.6 mAh g−1 at 1 A g−1, and excellent rate performance (162.8 mAh g−1 at 10 A g−1). In addition, the NiSe2//Zn battery also presents a satisfactory cycle life at the high current density of 8 A g−1 (almost no decay compared to the initial specific capacity after 1000 cycles). Additionally, the battery device also exhibits a satisfactory energy density of 343.2 Wh kg−1 and a peak power density of 11.7 kW kg−1. This work provides a simple attempt to design a high-performance layered cathode material for aqueous Ni-Zn batteries. Full article
(This article belongs to the Special Issue 2D Materials: Synthesis and Energy Applications)
►▼ Show Figures

Graphical abstract

11 pages, 4480 KiB  
Article
Synthesis of Zn2+-Pre-Intercalated V2O5·nH2O/rGO Composite with Boosted Electrochemical Properties for Aqueous Zn-Ion Batteries
by Yanzhi Fan, Xiaomeng Yu, Ziyi Feng, Mingjie Hu and Yifu Zhang
Molecules 2022, 27(17), 5387; https://doi.org/10.3390/molecules27175387 - 24 Aug 2022
Cited by 6 | Viewed by 1565
Abstract
Layered vanadium-based materials are considered to be great potential electrode materials for aqueous Zn-ion batteries (AZIBs). The improvement of the electrochemical properties of vanadium-based materials is a hot research topic but still a challenge. Herein, a composite of Zn-ion pre-intercalated V2O [...] Read more.
Layered vanadium-based materials are considered to be great potential electrode materials for aqueous Zn-ion batteries (AZIBs). The improvement of the electrochemical properties of vanadium-based materials is a hot research topic but still a challenge. Herein, a composite of Zn-ion pre-intercalated V2O5·nH2O combined with reduced graphene oxide (ZnVOH/rGO) is synthesized by a facile hydrothermal method and it shows improved Zn-ion storage. ZnVOH/rGO delivers a capacity of 325 mAh·g−1 at 0.1 A·g−1, and this value can still reach 210 mAh·g−1 after 100 cycles. Additionally, it exhibits 196 mAh·g−1 and keeps 161 mAh·g−1 after 1200 cycles at 4 A·g−1. The achieved performances are much higher than that of ZnVOH and VOH. All results reveal that Zn2+ as “pillars” expands the interlayer distance of VOH and facilitates the fast kinetics, and rGO improves the electron flow. They both stabilize the structure and enhance efficient Zn2+ migration. All findings demonstrate ZnVOH/rGO’s potential as a perspective cathode material for AZIBs. Full article
(This article belongs to the Special Issue 2D Materials: Synthesis and Energy Applications)
►▼ Show Figures

Figure 1

12 pages, 2273 KiB  
Article
Synthesis of Lead-Free CaTiO3 Oxide Perovskite Film through Solution Combustion Method and Its Thickness-Dependent Hysteresis Behaviors within 100 mV Operation
by Subin Lee, Soyeon Kwak, Taehyun Park, Byoungchul Son, Hyung Joong Yun, Jaehyun Hur and Hocheon Yoo
Molecules 2021, 26(18), 5446; https://doi.org/10.3390/molecules26185446 - 7 Sep 2021
Cited by 12 | Viewed by 3229
Abstract
Perovskite is attracting considerable interest because of its excellent semiconducting properties and optoelectronic performance. In particular, lead perovskites have been used extensively in photovoltaic, photodetectors, thin-film transistors, and various electronic applications. On the other hand, the elimination of lead is essential because of [...] Read more.
Perovskite is attracting considerable interest because of its excellent semiconducting properties and optoelectronic performance. In particular, lead perovskites have been used extensively in photovoltaic, photodetectors, thin-film transistors, and various electronic applications. On the other hand, the elimination of lead is essential because of its strong toxicity. This paper reports the synthesis of lead-free calcium titanate perovskite (CaTiO3) using a solution-processed combustion method. The chemical and morphological properties of CaTiO3 were examined as a function of its thickness by scanning electron microscopy, X-ray diffraction (XRD), atomic force microscopy, X-ray photoelectron spectroscopy, and ultraviolet–visible spectrophotometry. The analysis showed that thicker films formed by a cumulative coating result in larger grains and more oxygen vacancies. Furthermore, thickness-dependent hysteresis behaviors were examined by fabricating a metal-CaTiO3-metal structure. The electrical hysteresis could be controlled over an extremely low voltage operation, as low as 100 mV, by varying the grain size and oxygen vacancies. Full article
(This article belongs to the Special Issue 2D Materials: Synthesis and Energy Applications)
►▼ Show Figures

Figure 1

10 pages, 3483 KiB  
Article
Temperature Dependent Excitonic Transition Energy and Enhanced Electron-Phonon Coupling in Layered Ternary SnS2-xSex Semiconductors with Fully Tunable Stoichiometry
by Der-Yuh Lin, Hung-Pin Hsu, Chi-Feng Tsai, Cheng-Wen Wang and Yu-Tai Shih
Molecules 2021, 26(8), 2184; https://doi.org/10.3390/molecules26082184 - 10 Apr 2021
Cited by 6 | Viewed by 2046
Abstract
In this study, a series of SnS2-xSex (0 ≤ x ≤ 2) layered semiconductors were grown by the chemical–vapor transport method. The crystal structural and material phase of SnS2-xSex layered van der Waals crystals was characterized by [...] Read more.
In this study, a series of SnS2-xSex (0 ≤ x ≤ 2) layered semiconductors were grown by the chemical–vapor transport method. The crystal structural and material phase of SnS2-xSex layered van der Waals crystals was characterized by X-ray diffraction measurements and Raman spectroscopy. The temperature dependence of the spectral features in the vicinity of the direct band edge excitonic transitions of the layered SnS2-xSex compounds was measured in the temperature range of 20–300 K using the piezoreflectance (PzR) technique. The near band-edge excitonic transition energies of SnS2-xSex were determined from a detailed line-shape fit of the PzR spectra. The PzR characterization has shown that the excitonic transitions were continuously tunable with the ratio of S and Se. The parameters that describe the temperature variation of the energies of the excitonic transitions are evaluated and discussed. Full article
(This article belongs to the Special Issue 2D Materials: Synthesis and Energy Applications)
►▼ Show Figures

Figure 1

Review

Jump to: Research

24 pages, 9088 KiB  
Review
Self-Powered Sensors: New Opportunities and Challenges from Two-Dimensional Nanomaterials
by Eunkwang Lee and Hocheon Yoo
Molecules 2021, 26(16), 5056; https://doi.org/10.3390/molecules26165056 - 20 Aug 2021
Cited by 14 | Viewed by 3930
Abstract
Nanomaterials have gained considerable attention over the last decade, finding applications in emerging fields such as wearable sensors, biomedical care, and implantable electronics. However, these applications require miniaturization operating with extremely low power levels to conveniently sense various signals anytime, anywhere, and show [...] Read more.
Nanomaterials have gained considerable attention over the last decade, finding applications in emerging fields such as wearable sensors, biomedical care, and implantable electronics. However, these applications require miniaturization operating with extremely low power levels to conveniently sense various signals anytime, anywhere, and show the information in various ways. From this perspective, a crucial field is technologies that can harvest energy from the environment as sustainable, self-sufficient, self-powered sensors. Here we revisit recent advances in various self-powered sensors: optical, chemical, biological, medical, and gas. A timely overview is provided of unconventional nanomaterial sensors operated by self-sufficient energy, focusing on the energy source classification and comparisons of studies including self-powered photovoltaic, piezoelectric, triboelectric, and thermoelectric technology. Integration of these self-operating systems and new applications for neuromorphic sensors are also reviewed. Furthermore, this review discusses opportunities and challenges from self-powered nanomaterial sensors with respect to their energy harvesting principles and sensing applications. Full article
(This article belongs to the Special Issue 2D Materials: Synthesis and Energy Applications)
►▼ Show Figures

Figure 1

Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:
 
Displaying articles 1-5
Back to TopTop