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Advances in Flexible Wearable Energy Devices and Systems

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

Deadline for manuscript submissions: closed (10 January 2023) | Viewed by 1727

Special Issue Editors


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Guest Editor
Frontiers Science Center for Transformative Molecules, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
Interests: flexible device; wearable device; fiber electronics; energy storage; battery; carbon nanomaterials; functional materials

E-Mail Website
Guest Editor
School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
Interests: flexible elctronics; wearable device; perovskite; solar cells; self-powered system

Special Issue Information

Dear Colleagues,

Efficient energy harvesting and storage devices are considered to be critical for the sustainable development of modern society. However, the current energy harvesting and storage systems that are generally bulky and rigid cannot afford the requirements for next-generation electronic devices including portability, flexibility, and wearability. To this end, energy harvesting and storage devices that are flexible and wearable have attracted extensive attention attributed to their unique and promising features. For instance, their high flexibility ensures the stable performance under complex deformations such as twisting and stretching in various applications. More specifically, wearability can accommodate the irregular substrates on human body, making them promising candidates for next-generation consumer electronics, virtual reality facilities, smart garments, and healthcare devices.

In this Special Issue, the latest achievements of flexible and wearable energy devices, including solar cells, triboelectric and piezoelectric generators, supercapacitors, and rechargeable batteries will be mainly presented. The integrated systems comprised of flexible and wearable energy harvesting/storage devices and electrical appliances (such as sensors, light-emitting diode, displayers, etc.) will be included. In addition, multi-functional flexible and wearable energy devices will be introduced towards real-world applications.

It is my pleasure to invite you to submit a manuscript for this Special Issue. Full papers, communications, and reviews are all welcome.

Prof. Dr. Hao Sun
Prof. Dr. Zhibin Yang
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

  • energy device
  • flexible
  • wearable
  • stretchable
  • integrated system
  • multi-functional
  • fiber
  • fabric

Published Papers (1 paper)

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Research

12 pages, 4987 KiB  
Article
Printing Formation of Flexible (001)-Oriented PZT Films on Plastic Substrates
by Tomohiko Nakajima and Yuuki Kitanaka
Materials 2023, 16(5), 2116; https://0-doi-org.brum.beds.ac.uk/10.3390/ma16052116 - 06 Mar 2023
Cited by 1 | Viewed by 1303
Abstract
High-quality, uniaxially oriented, and flexible PbZr0.52Ti0.48O3 (PZT) films were fabricated on flexible RbLaNb2O7/BaTiO3 (RLNO/BTO)-coated polyimide (PI) substrates. All layers were fabricated by a photo-assisted chemical solution deposition (PCSD) process using KrF laser irradiation [...] Read more.
High-quality, uniaxially oriented, and flexible PbZr0.52Ti0.48O3 (PZT) films were fabricated on flexible RbLaNb2O7/BaTiO3 (RLNO/BTO)-coated polyimide (PI) substrates. All layers were fabricated by a photo-assisted chemical solution deposition (PCSD) process using KrF laser irradiation for photocrystallization of the printed precursors. The Dion–Jacobson perovskite RLNO thin films on flexible PI sheets were employed as seed layers for the uniaxially oriented growth of PZT films. To obtain the uniaxially oriented RLNO seed layer, a BTO nanoparticle-dispersion interlayer was fabricated to avoid PI substrate surface damage under excess photothermal heating, and the RLNO has been orientedly grown only at around 40 mJ·cm−2 at 300 °C. The prepared RLNO seed layer on the BTO/PI substrate showed very high (010)-oriented growth with a very high Lotgering factor (F(010) = 1.0). By using the flexible (010)-oriented RLNO film on BTO/PI, PZT film crystal growth was possible via KrF laser irradiation of a sol–gel-derived precursor film at 50 mJ·cm−2 at 300 °C. The obtained PZT film showed highly (001)-oriented growth on the flexible plastic substrates with F(001) = 0.92 without any micro-cracks. The RLNO was only uniaxial-oriented grown at the top part of the RLNO amorphous precursor layer. The oriented grown and amorphous phases of RLNO would have two important roles for this multilayered film formation: (1) triggering orientation growth of the PZT film at the top and (2) the stress relaxation of the underneath BTO layer to suppress the micro-crack formation. This is the first time that PZT films have been crystallized directly on flexible substrates. The combined processes of photocrystallization and chemical solution deposition are a cost-effective and highly on-demand process for the fabrication of flexible devices. Full article
(This article belongs to the Special Issue Advances in Flexible Wearable Energy Devices and Systems)
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