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Advance Electrode Materials for Perovskite Solar Cells and Electrochemical Supercapacitor
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Advance Electrode Materials for Perovskite Solar Cells and Electrochemical Supercapacitor

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Materials Science and Engineering".

Deadline for manuscript submissions: closed (31 December 2019) | Viewed by 23172

Special Issue Editor

Prof. Dr. Hyung-Shik Shin

E-Mail Website
Guest Editor
1. Energy Materials & Surface Science Laboratory, Solar Energy Research Center, School of Chemical Engineering, Jeonbuk National University, Jeonju 54896, Korea
2. Korea Basic Science Institute (KBSI), 169-148 Gwahak-ro, Yuseong-gu, Daejon 34133, Korea
Interests: perovskite solar cells (PSCs); organic solar cells (OSCs); dye-sensitized solar cells (DSSCs); supercapacitors; photocatalysts; sensors
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Advanced materials are receiving a great deal of interest in multidimensional applications and development because of their dominant role in science and technology. The aim of this Special Issue is to assess the current status and to identify the future priority and directions in research and applications of advanced materials without being limited to nanoparticles, nanocatalysts, nanoporous materials, nanocomposites, and nanofilms for solar energy and supercapacitor applications. The focus of this Special Issue will also be on the progress in the development of the synthesis of advanced materials through simple, straightforward, and facile techniques such as sol-gel, solid state reaction, chemical vapor deposition, and sonochemical, etc. This Special Issue will provide a platform and opportunity to disseminate and share information with world-class researchers working on advanced electrode materials for applications of perovskite solar cells and supercapacitors. We invite researchers, scientists, and technocrats in related fields to contribute their original research, reviews, and theoretical studies to cover the topic “Advance Electrode Materials for Perovskite Solar Cells and Electrochemical Supercapacitor”. It is our intension that this Special Issue will offer a unique glimpse of what has been achieved and what remains to be explored in advance electrode materials for perovskite solar cells and electrochemical supercapacitor. All manuscripts to be considered for publication in this section will undergo a rigorous peer-review process, and decisions are based on the recommendations of independent reviewers.

Prof. Hyung-Shik Shin
Guest Editor

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Keywords

  • perovskite solar cells
  • supercapacitors
  • nanomaterials, nanocomposites
  • electrodes
  • metal oxides
  • charge transporting materials

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Published Papers (6 papers)

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Research

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17 pages, 6793 KiB  
Article
Synthesis of Benzoxazine-Based N-Doped Mesoporous Carbons as High-Performance Electrode Materials
by Haihan Zhang, Li Xu and Guoji Liu
Appl. Sci. 2020, 10(1), 422; https://doi.org/10.3390/app10010422 - 6 Jan 2020
Cited by 18 | Viewed by 4549
Abstract
In this work, nitrogen-doped carbon materials (NCMs) were prepared using aniline-phenol benzoxazine (BOZ) or aniline-cardanol benzoxazine as the carbon precursor and SBA-15 as the hard template. The effects of the carbonization temperature (700, 800, and 900 °C) and different nitrogen contents on the [...] Read more.
In this work, nitrogen-doped carbon materials (NCMs) were prepared using aniline-phenol benzoxazine (BOZ) or aniline-cardanol benzoxazine as the carbon precursor and SBA-15 as the hard template. The effects of the carbonization temperature (700, 800, and 900 °C) and different nitrogen contents on the electrochemical properties of carbon materials were investigated. The samples synthesized using aniline-phenol benzoxazine as precursors and treated at 900 °C (NCM-900) exhibited an excellent electrochemical performance. The specific capacitance was 460 F/g at a current density of 0.25 A/g and the cycle stability was excellent (96.1% retention rate of the initial capacitance after 2000 cycles) in a 0.5 M H2SO4 electrolyte with a three-electrode system. Furthermore, NCM-900 also exhibited a high specific capacitance, comparable energy/power densities, and excellent cycling stability using a symmetrical electrode system. The characterization of the morphology and structure of the materials suggests it possessed an ordered mesoporous structure and a large specific surface area. NCM-900 could thus be considered a promising electrode material for supercapacitors. Full article
(This article belongs to the Special Issue Advance Electrode Materials for Perovskite Solar Cells and Electrochemical Supercapacitor)
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11 pages, 3792 KiB  
Article
Methods of Assessing Degradation of Supercapacitors by Using Various Measurement Techniques
by Stanislaw Galla, Arkadiusz Szewczyk, Janusz Smulko and Patryk Przygocki
Appl. Sci. 2019, 9(11), 2311; https://doi.org/10.3390/app9112311 - 5 Jun 2019
Cited by 10 | Viewed by 2934
Abstract
This article presents the qualitative analyses of the construction of supercapacitor samples. The analyses are based on the suggested thermographic measurements as well as the technique of testing the inherent noise of the investigated element. The indicated assessment methods have been referred to [...] Read more.
This article presents the qualitative analyses of the construction of supercapacitor samples. The analyses are based on the suggested thermographic measurements as well as the technique of testing the inherent noise of the investigated element. The indicated assessment methods have been referred to the currently used parameters for the qualitative evaluation of supercapacitors. The approach described in this paper, which introduces additional parameters assessing worn out of supercapacitors, can be included in the so-called non-invasive measurement methods, which allow the assessment of the condition of the sample under test. This article presents the applied measurement stands and verifies of the applicability of measurement methods in relation to the currently used parameters allowing for the qualitative assessment of supercapacitors. The measurement method presented in this article was used to study prototypes of supercapacitors. The measurement results allow for more accurate characterization of the observed element. Conducted tests revealed, at the same time, that one of the proposed evaluation methods, based on measurements of inherent noise of tested supercapacitors, is a method predicting their degradation. Full article
(This article belongs to the Special Issue Advance Electrode Materials for Perovskite Solar Cells and Electrochemical Supercapacitor)
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7 pages, 1678 KiB  
Article
Further Thermal Reduction of Reduced Graphene Oxide Aerogel with Excellent Rate Performance for Supercapacitors
by Peihui Luo and Ying Lin
Appl. Sci. 2019, 9(11), 2188; https://doi.org/10.3390/app9112188 - 28 May 2019
Cited by 10 | Viewed by 3106
Abstract
Preparation of pure three-dimensional graphene (3DG) with high rate performance for supercapacitors is critical for fast rate charge/discharge. Here, 3DG was prepared via thermal annealing of freeze-dried reduced graphene oxide (RGO) hydrogel under inert gas protection. The formed 3DG as an electrode material [...] Read more.
Preparation of pure three-dimensional graphene (3DG) with high rate performance for supercapacitors is critical for fast rate charge/discharge. Here, 3DG was prepared via thermal annealing of freeze-dried reduced graphene oxide (RGO) hydrogel under inert gas protection. The formed 3DG as an electrode material for supercapacitors revealed a specific capacitance of 115 F·g−1 at a current density of 1 A·g−1, and a high capacitance retention of 70% as current density increased to 40 A·g−1. The excellent rate capability was mainly attributed to the reserved porous structure and higher electrical conductivity for 3DG after thermal reduction than its RGO hydrogel precursor. Full article
(This article belongs to the Special Issue Advance Electrode Materials for Perovskite Solar Cells and Electrochemical Supercapacitor)
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13 pages, 4575 KiB  
Article
Electrochemical Detection of Chloride Ions by Copper (II) Complex with Mixed Ligand of Oxindole Derivative and Dithiocarbamates Moiety
by M. Nazim, Abdullah, Sadia Ameen, M. Shaheer Akhtar and Hyung-Shik Shin
Appl. Sci. 2019, 9(7), 1358; https://doi.org/10.3390/app9071358 - 31 Mar 2019
Cited by 2 | Viewed by 4295
Abstract
The present work describes the synthesis of a new copper (II) complex with bidentate ligands based on oxindole (indolin-2-one) derivatives, namely: 1H,1′H,1″H-[2,3′:2′,3″-terbenzo[b]pyrrol]-2″(3″H)-one (L1) and [sodium diethyldithiocarbamate (DTC)] (L2) as a second bidentate ligand. [...] Read more.
The present work describes the synthesis of a new copper (II) complex with bidentate ligands based on oxindole (indolin-2-one) derivatives, namely: 1H,1′H,1″H-[2,3′:2′,3″-terbenzo[b]pyrrol]-2″(3″H)-one (L1) and [sodium diethyldithiocarbamate (DTC)] (L2) as a second bidentate ligand. The ligand L1 was prepared by the cyclization reaction of oxindole (2-indolone) with phosphorus oxychloride. A mixed-ligand was synthesized using L1 and L2 ligands with copper (Cu (II)) via a simple reflux process. The synthesized mixed Cu (II) complex [C53H44CuN7O4S2 and [Cu(L1)2(L2)]2H2O] exhibited superior solubility in organic solvents like dichloromethane, chloroform, ethanol, methanol, DMF and DMSO. The optical characterizations revealed that the synthesized Cu (II) complex displayed a broad band (2Eg→2T2g) with the absorption at ~420 nm, suggesting a distorted octahedral geometry due to the strong Jahn-Teller distortion of the Cu2+ ion. The elemental analysis confirmed the existence of Cu, C, S, N, and other elements in the synthesized mixed Cu (II) complex. The physicochemical studies of the organic ligand and Cu(II) complex were investigated by TG analysis, NMR, FTIR, SEM, EDX, electronic spectra and cyclic voltammetry measurements. The detection of chloride ions with the prepared mixed Cu(II) complex was studied by cyclic voltammetry measurements at different scan rates. Full article
(This article belongs to the Special Issue Advance Electrode Materials for Perovskite Solar Cells and Electrochemical Supercapacitor)
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12 pages, 2875 KiB  
Article
Supercapacitive Performance of N-Doped Graphene/Mn3O4/Fe3O4 as an Electrode Material
by Beng Meng Chong, Nur Hawa Nabilah Azman, Muhammad Amirul Aizat Mohd Abdah and Yusran Sulaiman
Appl. Sci. 2019, 9(6), 1040; https://doi.org/10.3390/app9061040 - 13 Mar 2019
Cited by 28 | Viewed by 4454
Abstract
Nitrogen-doped graphene (NDG) and mixed metal oxides have been attracting much attention as the combination of these materials resulted in enhanced electrochemical properties. In this study, a composite of nitrogen-doped graphene/manganese oxide/iron oxide (NDG/Mn3O4/Fe3O4) for [...] Read more.
Nitrogen-doped graphene (NDG) and mixed metal oxides have been attracting much attention as the combination of these materials resulted in enhanced electrochemical properties. In this study, a composite of nitrogen-doped graphene/manganese oxide/iron oxide (NDG/Mn3O4/Fe3O4) for a supercapacitor was prepared through the hydrothermal method, followed by freeze-drying. Field emission scanning electron microscopy (FESEM) images revealed that the NDG/Mn3O4/Fe3O4 composite displayed wrinkled-like sheets morphology with Mn3O4 and Fe3O4 particles attached on the surface of NDG. The presence of NDG, Mn3O4, and Fe3O4 was characterized by Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD). The electrochemical studies revealed that the NDG/Mn3O4/Fe3O4 composite exhibited the highest specific capacitance (158.46 F/g) compared to NDG/Fe3O4 (130.41 F/g), NDG/Mn3O4 (147.55 F/g), and NDG (74.35 F/g) in 1 M Na2SO4 at a scan rate of 50 mV/s due to the synergistic effect between bimetallic oxides, which provide richer redox reaction and high conductivity. The galvanostatic charge discharge (GCD) result demonstrated that, at a current density of 0.5 A/g, the discharging time of NDG/Mn3O4/Fe3O4 is the longest compared to NDG/Mn3O4 and NDG/Fe3O4, indicating that it had the largest charge storage capacity. NDG/Mn3O4/Fe3O4 also exhibited the smallest resistance of charge transfer (Rct) value (1.35 Ω), showing its excellent charge transfer behavior at the interface region and good cyclic stability by manifesting a capacity retention of 100.4%, even after 5000 cycles. Full article
(This article belongs to the Special Issue Advance Electrode Materials for Perovskite Solar Cells and Electrochemical Supercapacitor)
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7 pages, 1320 KiB  
Letter
DFT Characteristics of Charge Transport in DBTP-Based Hole Transport Materials
by Ming Qiu, Weiwei Pei, Qiuchen Lu, Zhuo Li, Yuanzuo Li and Jianping Liang
Appl. Sci. 2019, 9(11), 2244; https://doi.org/10.3390/app9112244 - 31 May 2019
Cited by 21 | Viewed by 3289
Abstract
To improve the hole-transport ability and photoelectric properties of perovskite solar cells, the ground-state geometry, frontier molecular orbital, and mobility of two organic molecules were investigated using density functional theory (DFT) with the Marcus hopping model. The absorption spectra were calculated using time-dependent [...] Read more.
To improve the hole-transport ability and photoelectric properties of perovskite solar cells, the ground-state geometry, frontier molecular orbital, and mobility of two organic molecules were investigated using density functional theory (DFT) with the Marcus hopping model. The absorption spectra were calculated using time-dependent DFT. The result indicated that the increase in the conjugated chain and change in the substituted group location from meta to para cause low mobility, which has a negative effect on the hole-transporting ability. Full article
(This article belongs to the Special Issue Advance Electrode Materials for Perovskite Solar Cells and Electrochemical Supercapacitor)
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