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Nanomaterials
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State-of-the-Art Nanomaterials for Energy Storage/Conversion and Catalysis in Korea
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State-of-the-Art Nanomaterials for Energy Storage/Conversion and Catalysis in Korea

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

Deadline for manuscript submissions: closed (31 December 2022) | Viewed by 7851

Special Issue Editors

Prof. Dr. Jae-Jin Shim

E-Mail Website
Guest Editor
School of Chemical Engineering, Yeungnam University, Gyeongsan 712-749, Republic of Korea
Interests: energy storage; sucpercapacitor; photocatalysis; catalysis; chemical sensor; graphene; nanocomposites; nanoparticles; metal oxide; metal sulfide; carbon nanotube; carbon nano-onion; MXene; MOF; layered double hydroxide; wastewater treatment; hydrogen production; clean synthesis; graphene aerogel; supercritical fluid; ionic liquid
Prof. Dr. Yun Suk Huh

E-Mail Website
Guest Editor
Department of Biological Engineering, College of Engineering, Inha University, Incheon 402-751, Korea
Interests: biomaterials; biosensor; ionic liquid; drug delivery system
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

This Special Issue will cover a wide range of nanomaterials related to energy storage/conversion and catalysis currently studied in Korea. Research topics include but are not limited to the following:

  • Design and synthesis of nanomaterials for batteries, supercapacitors, fuel cells, solar cells, catalysts, and sensors
  • Structure, morphology, performance, and synthesis and reaction mechanisms of nanomaterials
  • Applications in energy storage, energy conversion, energy production, synthesis of chemicals, treatment of environmental waste materials, detecting toxic or hazardous materials, and etc.

All research in the above categories is suitable for submission if the major elements of research have been carried out in Korea or by Korean researchers. Any international collaborative research with Korean researchers is also welcome.

This Special Issue introduces the state-of-art research on the topic “Nanomaterials for Energy Storage/Conversion and Catalysis in Korea” with the hope to promote collaboration between Korean and international researchers for the betterment of the world.

Prof. Dr. Jae-Jin Shim
Prof. Dr. Yun Suk Huh
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. 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

  • Nanomaterials for Energy Storage
  • Nanomaterials for Energy Conversion
  • Nanomaterials for Catalysis
  • Battery
  • Supercapacitor
  • Solar Cell
  • Fuel Cell
  • Sensor
  • Photocatalyst
  • Environmental Catalysis

Published Papers (5 papers)

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Research

14 pages, 6024 KiB  
Article
NiCo2S4/MoS2 Nanocomposites for Long-Life High-Performance Hybrid Supercapacitors
by Le Nhu Minh Tue, Sumanta Sahoo, Ganesh Dhakal, Van Hoa Nguyen, Jintae Lee, Yong Rok Lee and Jae-Jin Shim
Nanomaterials 2023, 13(4), 689; https://doi.org/10.3390/nano13040689 - 10 Feb 2023
Cited by 3 | Viewed by 1930
Abstract
Metal sulfides (MS) and mixed metal sulfides (MTMS) have been considered potential candidates over their metal oxide/mixed metal oxide counterparts in recent years. Herein, one MTMS, i.e., NiCo2S4, was combined with 2D MS MoS2 through a single-step solvothermal [...] Read more.
Metal sulfides (MS) and mixed metal sulfides (MTMS) have been considered potential candidates over their metal oxide/mixed metal oxide counterparts in recent years. Herein, one MTMS, i.e., NiCo2S4, was combined with 2D MS MoS2 through a single-step solvothermal process with different morphologies (sheet-like and rod-like) for supercapacitor applications. The resulting electrode exhibited excellent coulombic efficiency, high specific capacitance, superior energy density, and, most importantly, ultra-high cycling stability. In particular, the electrode delivered a capacitance of 2594 F g−1 at 0.8 A g−1 after 45,000 charge/discharge cycles with a remarkable stability of 192%. Moreover, the corresponding hybrid supercapacitor device displayed an impressive coulombic efficiency of 123% after 20,000 cycles and 118% after 45,000 cycles. In addition, the device also exhibited a decent energy density of 31.9 Wh kg−1 and good cycling stability of 102% over 15,000 cycles. Full article
(This article belongs to the Special Issue State-of-the-Art Nanomaterials for Energy Storage/Conversion and Catalysis in Korea)
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14 pages, 3973 KiB  
Article
Poly(caffeic acid) Redox Couple Decorated on Electrochemically Reduced Graphene Oxide for Electrocatalytic Sensing Free Chlorine in Drinking Water
by Srinivasan Kesavan, Deivasigamani Ranjith Kumar, Ganesh Dhakal, Woo Kyoung Kim, Yong Rok Lee and Jae-Jin Shim
Nanomaterials 2023, 13(1), 151; https://doi.org/10.3390/nano13010151 - 28 Dec 2022
Cited by 3 | Viewed by 1299
Abstract
Regular water quality measurements are essential to the public water supply. Moreover, selective free chlorine (disinfectant) level monitoring without an interfering agent is necessary. The present work aimed to fabricate poly(caffeic acid) (p-CFA) coated on an electrochemically reduced graphene oxide (ERGO) surface for [...] Read more.
Regular water quality measurements are essential to the public water supply. Moreover, selective free chlorine (disinfectant) level monitoring without an interfering agent is necessary. The present work aimed to fabricate poly(caffeic acid) (p-CFA) coated on an electrochemically reduced graphene oxide (ERGO) surface for the selective detection of free chlorine. Electron microscopy and various spectroscopic techniques confirmed the p-CFA@ERGO/glassy carbon (GC) electrode. The p-CFA@ERGO/GC coated probe surface coverage was calculated to be 4.75 × 10−11 mol cm−2. The p-CFA@ERGO/GC showed superior catechol/o-quinone oxidation/reduction peaks for electrocatalytic free chlorine determination. The performance of the developed sensor electrode was outstanding, with an extensive range of free chlorine detection (20 μM to 20 mM), high sensitivity (0.0361 µA µM−1), and low detection limit (0.03 µM). The p-CFA@ERGO/GC capability of the realist water samples, such as the tested commercial and tap water, yielded a good range of recovery (from 98.5% to 99.9%). These values align with the standard N,N′-diethyl-p-phenylenediamine reagent method results. Full article
(This article belongs to the Special Issue State-of-the-Art Nanomaterials for Energy Storage/Conversion and Catalysis in Korea)
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20 pages, 5743 KiB  
Article
Ternary Nanohybrid of Ni3S2/CoMoS4/MnO2 on Nickel Foam for Aqueous and Solid-State High-Performance Supercapacitors
by Sumanta Sahoo, Ganesh Dhakal, Woo Kyoung Kim and Jae-Jin Shim
Nanomaterials 2022, 12(11), 1945; https://doi.org/10.3390/nano12111945 - 06 Jun 2022
Cited by 12 | Viewed by 1917
Abstract
To overcome the issues related to supercapacitor (SC) electrodes, such as high cost, low specific capacitance (Cs), low energy density (ED), requirements for expensive binder, etc., binderless electrodes are highly desirable. Here, a new ternary nanohybrid is presented as a [...] Read more.
To overcome the issues related to supercapacitor (SC) electrodes, such as high cost, low specific capacitance (Cs), low energy density (ED), requirements for expensive binder, etc., binderless electrodes are highly desirable. Here, a new ternary nanohybrid is presented as a binder-free SC electrode based on Ni3S2, CoMoS4, and MnO2. A facile two-step hydrothermal route, followed by a short thermal annealing process, is developed to grow amorphous polyhedral structured CoMoS4 and further wrap MnO2 nanowires on Ni foam. This rationally designed binder-free electrode exhibited the highest Cs of 2021 F g−1 (specific capacity of 883.8 C g−1 or 245.5 mAh g−1) at a current density of 1 A g−1 in 1 M KOH electrolyte with a highly porous surface morphology. This electrode material exhibited excellent cycling stability (90% capacitance retention after 4000 cycles) due to the synergistic contribution of individual components and advanced surface properties. Furthermore, an aqueous binder-free asymmetric SC based on this ternary composite exhibited an ED of 20.7 Wh kg−1, whereas a solid-state asymmetric SC achieved an ED of 13.8 Wh kg−1. This nanohybrid can be considered a promising binder-free electrode for both aqueous and solid-state asymmetric SCs with these remarkable electrochemical properties. Full article
(This article belongs to the Special Issue State-of-the-Art Nanomaterials for Energy Storage/Conversion and Catalysis in Korea)
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17 pages, 5854 KiB  
Article
Remote Plasma-Induced Synthesis of Self-Assembled MoS2/Carbon Nanowall Nanocomposites and Their Application as High-Performance Active Materials for Supercapacitors
by Jin-Ha Shin, Yong-Sup Choi and Hyun-Jae Park
Nanomaterials 2022, 12(8), 1338; https://doi.org/10.3390/nano12081338 - 13 Apr 2022
Cited by 4 | Viewed by 1701
Abstract
The objective of this study is to investigate the synthesis and influence of MoS2 on carbon nanowalls (CNWs) as supercapacitor electrodes. The synthesis of MoS2 on CNW was achieved by the introduction of hydrogen remote plasma from ammonium tetrathiomolybdate (ATTM) without [...] Read more.
The objective of this study is to investigate the synthesis and influence of MoS2 on carbon nanowalls (CNWs) as supercapacitor electrodes. The synthesis of MoS2 on CNW was achieved by the introduction of hydrogen remote plasma from ammonium tetrathiomolybdate (ATTM) without deterioration of the CNWs. The topographical surface structures and electrochemical characteristics of the MoS2–CNW composite electrodes were explored using two ATTM-dispersed organic solvents—acetonitrile and dimethylformamide (DMF). In this study, CNW and MoS2 were synthesized using an electron cyclotron resonance plasma. However, hydrogen radicals, which transform ATTM into MoS2, were provided in the form of a remote plasma source. The electrochemical performances of MoS2–CNW hybrid electrodes with various morphologies—depending on the solvent and ATTM concentration—were evaluated using a three-electrode system. The results revealed that the morphology of the synthesized MoS2 was influenced by the organic solvent used and affected both the electrochemical performance and topographical characteristics. Notably, considerable enhancement of the specific capacitance was observed for the MoS2 with open top edges synthesized from DMF. These encouraging results may motivate additional research on hybrid supercapacitor electrodes and the rapid synthesis of MoS2 and other transition metal dichalcogenides. Full article
(This article belongs to the Special Issue State-of-the-Art Nanomaterials for Energy Storage/Conversion and Catalysis in Korea)
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13 pages, 3819 KiB  
Article
Facile Synthesis of Zn-Co-S Nanostrip Cluster Arrays on Ni Foam for High-Performance Hybrid Supercapacitors
by Subbukalai Vijayakumar, Ganesh Dhakal, Soo-Hyun Kim, Jintae Lee, Yong Rok Lee and Jae-Jin Shim
Nanomaterials 2021, 11(12), 3209; https://doi.org/10.3390/nano11123209 - 26 Nov 2021
Cited by 8 | Viewed by 2242
Abstract
Mixed metal sulfides exhibit outstanding electrochemical performance compared to single metal sulfides and mixed metal oxides because of their richer redox reactions and high electronic conductivity. In the present study, Zn-Co-S nanostrip cluster arrays were formed from ZnCo2O4 grown on [...] Read more.
Mixed metal sulfides exhibit outstanding electrochemical performance compared to single metal sulfides and mixed metal oxides because of their richer redox reactions and high electronic conductivity. In the present study, Zn-Co-S nanostrip cluster arrays were formed from ZnCo2O4 grown on Ni foam by an anion exchange reaction using a two-step hydrothermal process. Morphological characterization confirmed that the Zn-Co-S nanostrip cluster arrays had grown homogeneously on the skeleton of the 3D Ni foam. The length of the nanostrip was approximately 8 µm, and the width ranged from 600 to 800 nm. The Ni foam-supported Zn-Co-S nanostrip cluster arrays were assessed directly for electrochemical supercapacitor applications. Compared to ZnCo2O4, the Zn-Co-S electrode exhibited a three-fold higher specific capacity of 830 C g−1 at a specific current of 2.0 A g−1. The higher polarizability, lower electro-negativity, and larger size of the S2− ion played an important role in substituting oxygen with sulfur, which enhanced the performance. The Zn-Co-S//AC hybrid device delivered a maximum specific energy of 19.0 Wh kg−1 at a specific power of 514 W kg−1. The remarkable performance of Zn-Co-S nanostrip cluster arrays highlights their potential as a positive electrode for hybrid supercapacitor applications. Full article
(This article belongs to the Special Issue State-of-the-Art Nanomaterials for Energy Storage/Conversion and Catalysis in Korea)
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