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Recent Advances in Functionalized Nanomaterials for Energy Applications
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Recent Advances in Functionalized Nanomaterials for Energy Applications

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Energy Materials".

Deadline for manuscript submissions: closed (15 December 2020) | Viewed by 11037

Special Issue Editors

Prof. Dr. Ajayan Vinu

E-Mail Website
Guest Editor
Global Innovative Center for Advanced Nanomaterials (GICAN), University of Newcastle, Callaghan, Australia
Interests: electrochemical energy storage; supercapacitor; electrode materials
Prof. Dr. Siddulu Naidu Talapaneni

E-Mail Website
Guest Editor
Global Innovative Center for Advanced Nanomaterials (GICAN) University of Newcastle, Callaghan, Australia
Interests: nanoporous materials; porous polymers; covalent triazine frameworks; reticular synthesis; carbon; carbon nitride; CO2 capture and conversion; gas storage; energy storage; secondary batteries

Special Issue Information

Dear Colleagues,

Advanced nanomaterials, such as 2D layered materials, nanoparticles, quantum dots, nanosheets, nano carbons, nanoporous polymers, and porous organic polymers, have been received interest for clean energy and environmental applications thanks to their unique and special properties, such as their high surface to volume ratios, enhanced transport properties, and confinement effects resulting from the nanoscale dimensions. The motivation is to develop advanced nanomaterials with diverse functionalities, with the aim of achieving high power density, large energy density, and high energy-conversion efficiency in energy storage and conversion devices.

This Special Issue on the “Recent Advances in Functionalized Nanomaterials for Energy Applications” will focus on the design and development of advanced nanomaterials for Lithium ion batteries, post lithium batteries, secondary batteries, supercapacitors, hybrid capacitors, solar cells, photovoltaics, photocatalysis, hydrogen generation, electrocatalysis, gas storage systems, thermoelectrics, and heterogeneous catalysis, with great potential for use in future consumer products, ranging from modern electronics to electric grids and electric vehicles with arbitrarily shaped surfaces. This Special Issue is intended to present and discuss recent challenges and technological advancements in the production of functional nanomaterials and their applications in energy harvesting and energy storage devices for flexible applications.

On this occasion, we would like to invite you to submit your original research paper or comprehensive review on advanced functional nanomaterials for energy and sustainability applications for inclusion in this high-profile Special Issue of Materials.

Prof. Dr. Ajayan Vinu
Prof. Dr. Siddulu Naidu Talapaneni
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 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. Materials 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 2600 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

  • Nanomaterials
  • 2D materials
  • nanoporous materials
  • batteries
  • supercapacitors
  • electrocatalysis
  • hydrogen storage and generation
  • oxygen reduction
  • solar cells
  • photovoltaics
  • photocatalysis
  • CO2 mitigation
  • heterogeneous catalysis

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

Published Papers (3 papers)

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Research

10 pages, 2538 KiB  
Article
The Optoelectronic Properties of p-Type Cr-Deficient Cu[Cr0.95−xMg0.05]O2 Films Deposited by Reactive Magnetron Sputtering
by Song-Sheng Lin, Qian Shi, Ming-Jiang Dai, Kun-Lun Wang, Sheng-Chi Chen, Tsung-Yen Kuo, Dian-Guang Liu, Shu-Mei Song and Hui Sun
Materials 2020, 13(10), 2376; https://doi.org/10.3390/ma13102376 - 21 May 2020
Cited by 6 | Viewed by 2488
Abstract
CuCrO2 is one of the most promising p-type transparent conductive oxide (TCO) materials. Its electrical properties can be considerably improved by Mg doping. In this work, Cr-deficient CuCrO2 thin films were deposited by reactive magnetron sputtering based on 5 at.% Mg [...] Read more.
CuCrO2 is one of the most promising p-type transparent conductive oxide (TCO) materials. Its electrical properties can be considerably improved by Mg doping. In this work, Cr-deficient CuCrO2 thin films were deposited by reactive magnetron sputtering based on 5 at.% Mg doping. The influence of Cr deficiency on the film’s optoelectronic properties was investigated. As the film’s composition varied, CuO impurity phases appeared in the film. The mixed valency of Cu+/Cu2+ led to an enhancement of the hybridization between the Cu3d and O2p orbitals, which further reduced the localization of the holes by oxygen. As a result, the carrier concentration significantly improved. However, since the impurity phase of CuO introduced more grain boundaries in Cu[Cr0.95−xMg0.05]O2, impeding the transport of the carrier and incident light in the film, the carrier mobility and the film’s transmittance reduced accordingly. In this work, the optimal optoelectronic performance is realized where the film’s composition is Cu[Cr0.78Mg0.05]O2. Its Haacke’s figure of merit is about 1.23 × 10−7 Ω−1. Full article
(This article belongs to the Special Issue Recent Advances in Functionalized Nanomaterials for Energy Applications)
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12 pages, 3625 KiB  
Article
One-Pot Synthesized Visible Light-Driven BiOCl/AgCl/BiVO4 n-p Heterojunction for Photocatalytic Degradation of Pharmaceutical Pollutants
by Rokhsareh Akbarzadeh, Anvar Asadi, Peter Ozaveshe Oviroh and Tien-Chien Jen
Materials 2019, 12(14), 2297; https://doi.org/10.3390/ma12142297 - 18 Jul 2019
Cited by 9 | Viewed by 2998
Abstract
A novel enhanced visible light absorption BiOCl/AgCl/BiVO4 heterojunction of photocatalysts could be obtained through a one-pot hydrothermal method used with two different pH solutions. There was a relationship between synthesis pH and the ratio of BiOCl to BiVO4 in XRD planes [...] Read more.
A novel enhanced visible light absorption BiOCl/AgCl/BiVO4 heterojunction of photocatalysts could be obtained through a one-pot hydrothermal method used with two different pH solutions. There was a relationship between synthesis pH and the ratio of BiOCl to BiVO4 in XRD planes and their photocatalytic activity. The visible light photocatalytic performances of photocatalysts were evaluated via degradation of diclofenac (DCFF) as a pharmaceutical model pollutant. Furthermore, kinetic studies showed that DCF degradation followed pseudo-first-order kinetics. The photocatalytic degradation rates of BiOCl/AgCl/BiVO4 synthesized at pH = 1.2 and pH = 4 for DCF were 72% and 47%, respectively, showing the higher activity of the photocatalyst which was synthesized at a lower pH value. It was concluded that the excellent photocatalytic activity of BiOCl/AgCl/BiVO4 is due to the enhanced visible light absorption formation of a heterostructure, which increased the lifetime of photo-produced electron–hole pairs by creating a heterojunction. The influence of pH during synthesis on photocatalytic activity in order to create different phases was investigated. This work suggests that the BiOCl/AgCl/BiVO4 p-n heterojunction is more active when the ratio of BiOCl to BiVO4 is smaller, and this could be achieved simply by the pH adjustment. This is a promising method of modifying the photocatalyst for the purpose of pollutant degradation under visible light illumination. Full article
(This article belongs to the Special Issue Recent Advances in Functionalized Nanomaterials for Energy Applications)
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Graphical abstract

12 pages, 2022 KiB  
Article
Improving Air-Stability and Performance of Bulk Heterojunction Polymer Solar Cells Using Solvent Engineered Hole Selective Interlayer
by Binrui Xu, Gopalan Sai-Anand, Hyun-Min Jeong, Sae-Wan Kim, Ju-Seong Kim, Jin-Beom Kwon and Shin-Won Kang
Materials 2018, 11(7), 1143; https://doi.org/10.3390/ma11071143 - 5 Jul 2018
Cited by 17 | Viewed by 4733
Abstract
In bulk heterojunction polymer solar cells (BHJ-PSCs), poly(3,4-ethylenedioxythiophene) doped with poly(styrene sulfonate) (PEDOT:PSS) is the most commonly used hole selective interlayer (HSIL). However, its acidity, hygroscopic nature, and the use of indium tin oxide (ITO) etching can degrade the overall photovoltaic performance and [...] Read more.
In bulk heterojunction polymer solar cells (BHJ-PSCs), poly(3,4-ethylenedioxythiophene) doped with poly(styrene sulfonate) (PEDOT:PSS) is the most commonly used hole selective interlayer (HSIL). However, its acidity, hygroscopic nature, and the use of indium tin oxide (ITO) etching can degrade the overall photovoltaic performance and the air-stability of BHJ-PSCs. Solvent engineering is considered as a facile approach to overcome these issues. In this work, we engineered the HSIL using ethanol (ET) treated PEDOT:PSS to simultaneously enhance the photovoltaic performance properties and air-stability of the fabricated devices. We systematically investigated the influence of ET on the microstructural, morphological, interfacial characteristics of modified HSIL and photovoltaic characteristics of BHJ-PSCs. Compared with the BHJ-PSC with pristine PEDOT:PSS, a significant enhancement of power conversion efficiency (~17%) was witnessed for the BHJ-PSC with PEDOT:PSS-ET (v/v, 1:0.5). Consequently, the BHJ-PSC with PEDOT:PSS-ET (v/v, 1:0.5) as HSIL exhibited remarkably improved air-stability. Full article
(This article belongs to the Special Issue Recent Advances in Functionalized Nanomaterials for Energy Applications)
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