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Nanomaterials
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Novel Nanoporous Materials for Energy Storage and Conversion
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Novel Nanoporous Materials 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 (30 April 2023) | Viewed by 12221

Special Issue Editors

Prof. Dr. Yongfeng Yuan

E-Mail Website
Guest Editor
College of Machinery and Automation, Zhejiang Sci-Tech University, Hangzhou 310018, China
Interests: Lithium-ion batteries; Aqueous zinc-ion batteries; Sodium-ion batteries; supercapacitor; solid-state Lithium-ion batteries
Prof. Dr. Jun Zhang

E-Mail Website
Guest Editor
College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, China
Interests: solid-state Lithium-ion batteries; Lithium-ion batteries

Special Issue Information

Dear Colleagues,

We are pleased to invite you to publish your new research achievements in a special issue of Nanomaterials about Novel Nanoporous Materials for Energy Storage and Conversion. With the increasing intensification of energy and environmental issues as well as the boom in consumer electronics, electric vehicles, and energy storage stations, the electrochemical energy storage and conversion technology has attracted wide attention worldwide. During the energy storage process, electrode materials are the core components and the main substances in an electrochemical redox reaction. The physical and chemical properties of the electrode materials are mainly related to their microstructure. The nanoporous structure can not only provide abundant void space for electrolyte infiltration, but also well accommodate material volume change caused by the energy storage. What’s more, the nanoporous structure can bring about larger specific surface area, which can significantly promote electrochemical reaction. Therefore, in recent years, developing multifunctional electrode materials with novel nanostructure designs has become a key issue in achieving efficient energy storage devices.

This Special Issue aims to promote the global exchange of ideas and knowledge among chemists, physicists, material scientists and other researchers in the field of nanostructure design of energy storage materials. The topic will have a particular interest in the advanced nanoporous structures, focusing on state-of-the-art progresses, developments and new trends. The goal of this Research Topic is to cover recent nanoporous material design strategies to enable various energy storage materials with competitive performance.

  • Nanomaterials design for lithium/sodium/potassium/aluminium/zinc ion batteries
  • Novel electrodes structures to solve issues related to metal ion batteries and capacitors
  • Studies on energy storage mechanism of metal ion batteries
  • Advances in electrodes design strategies for metal ion energy storage devices
  • Current development of metal ion energy storage devices and future perspectives

Prof. Dr. Yongfeng Yuan
Prof. Dr. Jun Zhang
Guest Editors

Manuscript Submission Information

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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

  • Lithium/Sodium/Potassium/Aluminium/Zinc ion batteries
  • flow batteries, Lithium/Sodium/Selenium-Sulfur batteries
  • solid-state Lithium batteries, fuel cells
  • supercapacitors

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Published Papers (6 papers)

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20 pages, 9849 KiB  
Article
MOF-Derived Ultrathin NiCo-S Nanosheet Hybrid Array Electrodes Prepared on Nickel Foam for High-Performance Supercapacitors
by Jing Li, Jun Li, Meng Shao, Yanan Yan and Ruoliu Li
Nanomaterials 2023, 13(7), 1229; https://doi.org/10.3390/nano13071229 - 30 Mar 2023
Cited by 10 | Viewed by 1708
Abstract
At present, binary bimetallic sulfides are widely studied in supercapacitors due to their high conductivity and excellent specific capacitance (SC). In this article, NiCo-S nanostructured hybrid electrode materials were prepared on nickel foam (NF) by using a binary metal–organic skeleton as the sacrificial [...] Read more.
At present, binary bimetallic sulfides are widely studied in supercapacitors due to their high conductivity and excellent specific capacitance (SC). In this article, NiCo-S nanostructured hybrid electrode materials were prepared on nickel foam (NF) by using a binary metal–organic skeleton as the sacrificial template via a two-step hydrothermal method. Comparative analysis was carried out with Ni-S and Co-S in situ on NF to verify the excellent electrochemical performance of bimetallic sulfide as an electrode material for supercapacitors. NiCo-S/NF exhibited an SC of 2081 F∙g−1 at 1 A∙g−1, significantly superior to Ni-S/NF (1520.8 F∙g−1 at 1 A∙g−1) and Co-S/NF (1427 F∙g−1 at 1 A∙g−1). In addition, the material demonstrated better rate performance and cycle stability, with a specific capacity retention rate of 58% at 10 A∙g−1 than at 1 A∙g−1, and 75.7% of capacity was retained after 5000 cycles. The hybrid supercapacitor assembled by NiCo-S//AC exhibited a high energy density of 25.58 Wh∙kg−1 at a power density of 400 W∙kg−1. Full article
(This article belongs to the Special Issue Novel Nanoporous Materials for Energy Storage and Conversion)
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20 pages, 5772 KiB  
Article
Synthesis of Ni3S2 and MOF-Derived Ni(OH)2 Composite Electrode Materials on Ni Foam for High-Performance Supercapacitors
by Meng Shao, Jun Li, Jing Li, Yanan Yan and Ruoliu Li
Nanomaterials 2023, 13(3), 493; https://doi.org/10.3390/nano13030493 - 26 Jan 2023
Cited by 2 | Viewed by 1819
Abstract
Honeycomb-like Ni(OH)2/Ni3S2/Ni foam (NF) was fabricated via a two-step hydrothermal process and subsequent alkalization. Ni3S2 with a honeycombed structure was in-situ synthesized on the NF surface by a hydrothermal process. MOF-derived Ni(OH)2 nanosheets [...] Read more.
Honeycomb-like Ni(OH)2/Ni3S2/Ni foam (NF) was fabricated via a two-step hydrothermal process and subsequent alkalization. Ni3S2 with a honeycombed structure was in-situ synthesized on the NF surface by a hydrothermal process. MOF-derived Ni(OH)2 nanosheets were then successfully grown on the Ni3S2/NF surface by a second hydrothermal process and alkaline treatment, and a large number of nanosheets were interconnected to form a typical honeycomb-like structure with a large specific surface area and porosity. As a binder-free electrode, the prepared honeycomb-like Ni(OH)2/Ni3S2/NF exhibited a high specific capacitance (2207 F·g−1 at 1 A·g−1, 1929.7 F·g−1 at 5 mV·s−1) and a remarkable rate capability and cycling stability, with 62.3% of the initial value (1 A·g−1) retained at 10 A·g−1 and 90.4% of the initial value (first circle at 50 mV·s−1) retained after 5000 cycles. A hybrid supercapacitor (HSC) was assembled with Ni(OH)2/Ni3S2/NF as the positive electrode and activated carbon (AC) as the negative electrode and exhibited an outstanding energy density of 24.5 Wh·kg−1 at the power density of 375 W·kg−1. These encouraging results render the electrode a potential candidate for energy storage. Full article
(This article belongs to the Special Issue Novel Nanoporous Materials for Energy Storage and Conversion)
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14 pages, 6658 KiB  
Article
Facile Synthesis of NixCo3−xS4 Microspheres for High-Performance Supercapacitors and Alkaline Aqueous Rechargeable NiCo-Zn Batteries
by Daojun Zhang, Bei Jiang, Chengxiang Li, Hao Bian, Yang Liu, Yingping Bu, Renchun Zhang and Jingchao Zhang
Nanomaterials 2022, 12(17), 2994; https://doi.org/10.3390/nano12172994 - 30 Aug 2022
Cited by 1 | Viewed by 1658
Abstract
Electrochemical energy storage devices (EESDs) have caused widespread concern, ascribed to the increasing depletion of traditional fossil energy and environmental pollution. In recent years, nickel cobalt bimetallic sulfides have been regarded as the most attractive electrode materials for super-performance EESDs due to their [...] Read more.
Electrochemical energy storage devices (EESDs) have caused widespread concern, ascribed to the increasing depletion of traditional fossil energy and environmental pollution. In recent years, nickel cobalt bimetallic sulfides have been regarded as the most attractive electrode materials for super-performance EESDs due to their relatively low cost and multiple electrochemical reaction sites. In this work, NiCo-bimetallic sulfide NixCo3−xS4 particles were synthesized in a mixed solvent system with different proportion of Ni and Co salts added. In order to improve the electrochemical performance of optimized Ni2.5Co0.5S4 electrode, the Ni2.5Co0.5S4 particles were annealed at 350 °C for 60 min (denoted as Ni2.5Co0.5S4-350), and the capacity and rate performance of Ni2.5Co0.5S4-350 was greatly improved. An aqueous NiCo-Zn battery was assembled by utilizing Ni2.5Co0.5S4-350 pressed onto Ni form as cathode and commercial Zn sheet as anode. The NiCo-Zn battery based on Ni2.5Co0.5S4-350 cathode electrode delivers a high specific capacity of 232 mAh g−1 at 1 A g−1 and satisfactory cycling performance (65% capacity retention after 1000 repeated cycles at 8 A g−1). The as-assembled NiCo-Zn battery deliver a high specific energy of 394.6 Wh kg−1 and long-term cycling ability. The results suggest that Ni2.5Co0.5S4-350 electrode has possible applications in the field of alkaline aqueous rechargeable electrochemical energy storage devices for supercapacitor and NiCo-Zn battery. Full article
(This article belongs to the Special Issue Novel Nanoporous Materials for Energy Storage and Conversion)
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14 pages, 5959 KiB  
Article
CuxO-Modified Nanoporous Cu Foil as a Self-Supporting Electrode for Supercapacitor and Oxygen Evolution Reaction
by Zhenhan Li, Jianbin Lin, Xin He, Yue Xin, Ping Liang and Chi Zhang
Nanomaterials 2022, 12(12), 2121; https://doi.org/10.3390/nano12122121 - 20 Jun 2022
Cited by 4 | Viewed by 1981
Abstract
Designing and modifying nanoporous metal foils to make them suitable for supercapacitor and catalysis is significant but challenging. In this work, CuxO nanoflakes have been successfully in situ grown on nanoporous Cu foil via a facile electrooxidation method. A Ga-assisted surface [...] Read more.
Designing and modifying nanoporous metal foils to make them suitable for supercapacitor and catalysis is significant but challenging. In this work, CuxO nanoflakes have been successfully in situ grown on nanoporous Cu foil via a facile electrooxidation method. A Ga-assisted surface Ga-Cu alloying–dealloying is adopted to realize the formation of a nanoporous Cu layer on the flexible Cu foil. The following electrooxidation, at a constant potential, modifies the nanoporous Cu layer with CuxO nanoflakes. The optimum CuxO/Cu electrode (O-Cu-2h) delivers the maximum areal capacitance of 0.745 F cm−2 (410.27 F g−1) at 0.2 mA cm−2 and maintains 94.71% of the capacitance after 12,000 cycles. The supercapacitor consisted of the O-Cu-2h as the positive electrode and activated carbon as the negative electrode has an energy density of 24.20 Wh kg−1 and power density of 0.65 kW kg−1. The potential of using the electrode as oxygen evolution reaction catalysts is also investigated. The overpotential of O-Cu-2h at 10 mA cm−2 is 394 mV; however, the long-term stability still needs further improvement. Full article
(This article belongs to the Special Issue Novel Nanoporous Materials for Energy Storage and Conversion)
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16 pages, 5006 KiB  
Article
A Ten-Minute Synthesis of α-Ni(OH)2 Nanoflakes Assisted by Microwave on Flexible Stainless-Steel for Energy Storage Devices
by Sumaih F. Alshareef, Nuha A. Alhebshi, Karima Almashhori, Haneen S. Alshaikheid and Faten Al-hazmi
Nanomaterials 2022, 12(11), 1911; https://doi.org/10.3390/nano12111911 - 2 Jun 2022
Cited by 8 | Viewed by 2402
Abstract
Although numerous methods have been widely used to prepare nickel hydroxide materials, there is still a demand for lowering the required heating time, temperature, and cost with maintaining a high-quality nanomaterial for electrochemical energy storage. In this research, we study the relationship between [...] Read more.
Although numerous methods have been widely used to prepare nickel hydroxide materials, there is still a demand for lowering the required heating time, temperature, and cost with maintaining a high-quality nanomaterial for electrochemical energy storage. In this research, we study the relationship between microwave-assisted heating parameters and material properties of nickel hydroxide nanoflakes and evaluate their effect on electrochemical performance. X-ray diffraction spectra show that the samples prepared at the highest temperature of 220 °C have crystallized in the beta phase of nickel hydroxide crystal. While the sample synthesized at 150 °C in 30 min contains both beta and alpha phases. Interestingly, we obtained the pure alpha phase at 150 °C in just 10 min. A scanning electron microscope shows that increasing the temperature and heating time leads to enlarging the diameter of the macro-porous flower-like clusters of interconnected nanoflakes. Electrochemical measurements in potassium hydroxide electrolytes demonstrate that the alpha phase’s electrodes have much higher capacities than samples containing only the beta phase. The maximum areal capacity of 17.7 µAh/cm2 and gravimetric capacity of 35.4 mAh/g are achieved, respectively, at 0.2 mA/cm2 and 0.4 A/g, with a small equivalent series resistance value of 0.887 ohms on flexible stainless-steel mesh as a current collector. These improved nickel hydroxide electrodes can be ascribed to utilizing the diffusion-controlled redox reactions that are detected up to the high scan of 100 mV/s. Such fast charge-discharge processes expand the range of potential applications. Our nickel hydroxide electrode, with its rapid preparation at medium temperature, can be a cost-effective candidate for flexible supercapacitors and batteries. Full article
(This article belongs to the Special Issue Novel Nanoporous Materials for Energy Storage and Conversion)
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11 pages, 7482 KiB  
Article
A Facile Pre-Lithiated Strategy towards High-Performance Li2Se-LiTiO2 Composite Cathode for Li-Se Batteries
by Yang Xia, Zheng Fang, Chengwei Lu, Zhen Xiao, Xinping He, Yongping Gan, Hui Huang, Guoguang Wang and Wenkui Zhang
Nanomaterials 2022, 12(5), 815; https://doi.org/10.3390/nano12050815 - 28 Feb 2022
Viewed by 2047
Abstract
Conventional lithium-ion batteries with a limited energy density are unable to assume the responsibility of energy-structure innovation. Lithium-selenium (Li-Se) batteries are considered to be the next generation energy storage devices since Se cathodes have high volumetric energy density. However, the shuttle effect and [...] Read more.
Conventional lithium-ion batteries with a limited energy density are unable to assume the responsibility of energy-structure innovation. Lithium-selenium (Li-Se) batteries are considered to be the next generation energy storage devices since Se cathodes have high volumetric energy density. However, the shuttle effect and volume expansion of Se cathodes severely restrict the commercialization of Li-Se batteries. Herein, a facile solid-phase synthesis method is successfully developed to fabricate novel pre-lithiated Li2Se-LiTiO2 composite cathode materials. Impressively, the rationally designed Li2Se-LiTiO2 composites demonstrate significantly enhanced electrochemical performance. On the one hand, the overpotential of Li2Se-LiTiO2 cathode extremely decreases from 2.93 V to 2.15 V. On the other hand, the specific discharge capacity of Li2Se-LiTiO2 cathode is two times higher than that of Li2Se. Such enhancement is mainly accounted to the emergence of oxygen vacancies during the conversion of Ti4+ into Ti3+, as well as the strong chemisorption of LiTiO2 particles for polyselenides. This facile pre-lithiated strategy underscores the potential importance of embedding Li into Se for boosting electrochemical performance of Se cathode, which is highly expected for high-performance Li-Se batteries to cover a wide range of practical applications. Full article
(This article belongs to the Special Issue Novel Nanoporous Materials for Energy Storage and Conversion)
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