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Development of Energy Storage Devices
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Development of Energy Storage Devices

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

Deadline for manuscript submissions: closed (28 February 2022) | Viewed by 10060

Special Issue Editor

Prof. Dr. Daisuke Tashima

E-Mail Website
Guest Editor
Department of Electrical Engineering, Fukuoka Institute of Technology, Fukuoka 811-0295, Japan
Interests: supercapacitors; metal air fuel cells; proton exchange membrane fuel cells; lead acid battery
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Electrical energy storage devices have spread extensively to meet the increasing demand of several sectors such as renewable energies, automobiles, and mobile devices. Supercapacitors (electric double-layer capacitors, pseudocapacitors, and hybrid capacitors), lithium-ion batteries, and sodium-ion batteries are typical modern energy storage devices. It is now timely to publish a Special Issue focused on the recent technological developments and specific applications related to supercapacitors, lithium-ion batteries, and sodium-ion batteries. The journal Materials invites contributions to this Special Issue. The presentation of cutting-edge knowledge and the latest applications in the field will contribute to the advancement of the energy storage technology.

Prof. Daisuke Tashima
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. 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

  • electric double layer capacitors
  • pseudocapacitors
  • hybrid capacitors
  • lithium-ion batteries
  • sodium-ion batteries

Published Papers (4 papers)

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Research

15 pages, 3164 KiB  
Article
Electrochemical Performance of Orthorhombic CsPbI3 Perovskite in Li-Ion Batteries
by Nahid Kaisar, Tanmoy Paul, Po-Wei Chi, Yu-Hsun Su, Anupriya Singh, Chih-Wei Chu, Maw-Kuen Wu and Phillip M. Wu
Materials 2021, 14(19), 5718; https://doi.org/10.3390/ma14195718 - 30 Sep 2021
Cited by 4 | Viewed by 2707
Abstract
A facile solution process was employed to prepare CsPbI3 as an anode material for Li-ion batteries. Rietveld refinement of the X-ray data confirms the orthorhombic phase of CsPbI3 at room temperature. As obtained from bond valence calculations, strained bonds between Pb [...] Read more.
A facile solution process was employed to prepare CsPbI3 as an anode material for Li-ion batteries. Rietveld refinement of the X-ray data confirms the orthorhombic phase of CsPbI3 at room temperature. As obtained from bond valence calculations, strained bonds between Pb and I are identified within PbI6 octahedral units. Morphological study shows that the as-prepared δ-CsPbI3 forms a nanorod-like structure. The XPS analysis confirm the presence of Cs (3d, 4d), Pb (4d, 4f, 5d) and I (3p, 3d, 4d). The lithiation process involves both intercalation and conversion reactions, as confirmed by cyclic voltammetry (CV) and first-principles calculations. Impedance spectroscopy coupled with the distribution function of relaxation times identifies charge transfer processes due to Li metal foil and anode/electrolyte interfaces. An initial discharge capacity of 151 mAhg−1 is found to continuously increase to reach a maximum of ~275 mAhg−1 at 65 cycles, while it drops to ~240 mAhg−1 at 75 cycles and then slowly decreases to 235 mAhg−1 at 100 cycles. Considering the performance and structural integrity during electrochemical performance, δ-CsPbI3 is a promising material for future Li-ion battery (LIB) application. Full article
(This article belongs to the Special Issue Development of Energy Storage Devices)
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16 pages, 6425 KiB  
Article
Self-Healing and Highly Stretchable Hydrogel for Interfacial Compatible Flexible Paper-Based Micro-Supercapacitor
by Yutian Wang, Yunhui Shi, Yifan Gu, Pan Xue and Xinhua Xu
Materials 2021, 14(8), 1852; https://doi.org/10.3390/ma14081852 - 08 Apr 2021
Cited by 14 | Viewed by 3021
Abstract
Most reported wearable electronic devices lack self-healing chemistry and flexible function to maintain stable energy output while irreversible damages and complex deformations. In this work, we report a dual-dynamic network electrolyte synthesized by micellar elastomers introduced into strong hydrogel matrix. The gel electrolyte [...] Read more.
Most reported wearable electronic devices lack self-healing chemistry and flexible function to maintain stable energy output while irreversible damages and complex deformations. In this work, we report a dual-dynamic network electrolyte synthesized by micellar elastomers introduced into strong hydrogel matrix. The gel electrolyte is fabricated by physically cross-linking the borax-polyvinyl alcohol (B-PVA) network as tough matrix and poly (ethylene oxide) (PEO)-poly (propylene oxide) (PPO)-poly (ethylene oxide) (Pluronic) to frame elastic network, followed by immersion in potassium chloride solution. Under the action of dynamic borate ester bond and multi-network hydrogen bond, the as-prepared electrolyte exhibits high stretchability (1535%) and good self-healing efficiency. Based on the electrolyte, we assemble the interfacial compatible micro-supercapacitor (MSC) by multi-walled carbon nanotubes (MWCNT) interdigital electrode printed on cellulosic paper by direct ink writing (DIW) technique. Thanks to the large specific area and compressive deformation resistance of cellulosic paper, the MSC with tightly interfacial contact achieves high volumetric capacitance of 801.9 mF cm−3 at the current density of 20 μA cm−2. In the absence of stimulation of the external environment, the self-healing MSC demonstrates an ideal capacity retention (90.43%) after five physical damaged/healing cycles. Our research provides a clean and effective strategy to construct wearable MSC. Full article
(This article belongs to the Special Issue Development of Energy Storage Devices)
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10 pages, 5347 KiB  
Article
High-Temperature Degradation Tests on Electric Double-Layer Capacitors: The Effect of Residual Voltage on Degradation
by Tomoki Omori, Masahiro Nakanishi and Daisuke Tashima
Materials 2021, 14(6), 1520; https://doi.org/10.3390/ma14061520 - 20 Mar 2021
Cited by 2 | Viewed by 1745
Abstract
The demand for electric double-layer capacitors, which have high capacity and are maintenance-free, for use in a variety of devices has increased. Nevertheless, it is important to know the degradation behavior of these capacitors at high temperatures because they are expected to be [...] Read more.
The demand for electric double-layer capacitors, which have high capacity and are maintenance-free, for use in a variety of devices has increased. Nevertheless, it is important to know the degradation behavior of these capacitors at high temperatures because they are expected to be used in severe environments. Therefore, degradation tests at 25 °C and 80 °C were carried out in the current study to analyze the degradation behavior. Steam-activated carbon, Ketjen black, and PTFE were used as the electrodes, conductive material, and binder, respectively, and KOH was used as the electrolyte. The impedance and capacitance were calculated from the voltage and current in the device using the alternating current (AC) impedance method. The results showed that the impedance increased and the capacitance decreased over 14 days at 80 °C, which is the inverse of what we observed at 25 °C. Rapid degradation was also confirmed from the 80 °C degradation test. The residual voltage after measuring the current and voltage was a prominent factor influencing this rapid degradation. Full article
(This article belongs to the Special Issue Development of Energy Storage Devices)
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8 pages, 2519 KiB  
Article
Modeling of Equivalent Circuit Analysis of Degraded Electric Double-Layer Capacitors
by Tomoki Omori, Masahiro Nakanishi and Daisuke Tashima
Materials 2021, 14(2), 435; https://doi.org/10.3390/ma14020435 - 17 Jan 2021
Cited by 3 | Viewed by 1769
Abstract
The demand for electric double-layer capacitors (EDLCs) has recently increased, especially for regenerative braking systems in electric or hybrid vehicles. However, using EDLCs under high temperature often enhances their degradation. Continuously monitoring EDLC degradation is important to prevent sudden malfunction and rapid drops [...] Read more.
The demand for electric double-layer capacitors (EDLCs) has recently increased, especially for regenerative braking systems in electric or hybrid vehicles. However, using EDLCs under high temperature often enhances their degradation. Continuously monitoring EDLC degradation is important to prevent sudden malfunction and rapid drops in efficiency. Therefore, it is useful to diagnose the degradation at a lower frequency than that used in charge/discharge. Unused and degraded EDLCs were analyzed using the alternating current impedance method for measurements over a wide frequency range. Each result had a different spectrum up to 1 kHz. In addition, we show the basic inside condition of EDLCs with equivalent circuit analysis. This paper explores the possibility of degradation diagnosis at a high frequency and the basic physical mechanism. Full article
(This article belongs to the Special Issue Development of Energy Storage Devices)
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