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Flexible Electronics: Sensors, Energy and Health
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Flexible Electronics: Sensors, Energy and Health

A special issue of Electronics (ISSN 2079-9292). This special issue belongs to the section "Flexible Electronics".

Deadline for manuscript submissions: closed (15 August 2023) | Viewed by 4427

Special Issue Editors

Prof. Dr. Cao Guan

grade E-Mail Website
Guest Editor
Institute of Flexible Electronics, Northwestern Polytechnical University, Xi’an 710072, China
Interests: flexible energy storage; aqueous batteries; Zn-ion batteries; 3D printing
Dr. Xiangye Liu

E-Mail Website
Guest Editor
Institute of Flexible Electronics, Northwestern Polytechnical University, Xi’an 710072, China
Interests: synthesis of atomically thin 2D materials; investigation of energy reaction mechanisms based on on-chip micro devices; development of high-energy-density aqueous zinc ion batteries

Special Issue Information

Dear Colleagues,

With the fast development of materials and electronics, flexible electronics have attracted great research interest in sensing, detecting, energy storage and health-related applications. Flexible electronics are a new form of electronic technology in the fields of flexible electronic materials, devices, and systems. Compared with traditional electronic devices, flexible electronics have many natural advantages; they can withstand large deformations in terms of bending and even stretching, and they can cover the complex surface of the soft tissue of the human body. Flexible electronic devices can integrate electronic components of organic and inorganic materials well, and they have the characteristics of light weight and large deformation. Flexible electronics will have a huge impact in the fields of health care and brain–computer integration of the Internet of things, among others. This Special Issue aims to collect recent research on flexible electronics and their applications in sensor-, energy- and health-related areas, and highlights the future development of this rapidly expanding research area.

We are looking for submissions of original studies that highlight flexible materials and devices in sensing-, energy-, and health-related applications. Reviews which cover well-summarized prospects are also encouraged. The topics include, but are not limited to:

  • Flexible sensors;
  • Flexible energy-related areas (energy storage, conversion, and catalysis);
  • Flexible electronics for health;
  • Structure-function properties.

Prof. Dr. Cao Guan
Dr. Xiangye Liu
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. Electronics 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 2400 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

  • flexible electronics
  • sensors
  • energy storage
  • energy conversion
  • health monitoring

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Published Papers (2 papers)

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Research

12 pages, 3845 KiB  
Article
An Intelligent Glove of Synergistically Enhanced ZnO/PAN-Based Piezoelectric Sensors for Diversified Human–Machine Interaction Applications
by Min Wang, Xiaojuan Hou, Shuo Qian, Shuai Xian, Junbin Yu, Jian He and Xiujian Chou
Electronics 2023, 12(8), 1782; https://doi.org/10.3390/electronics12081782 - 10 Apr 2023
Cited by 4 | Viewed by 1836
Abstract
Human–machine interaction is now deeply integrated into our daily lives. However, the rigidity and high-power supply of traditional devices limit their further development. Herein, a high-performance flexible piezoelectric sensor (HFPS) based on a novel zinc oxide/polyacrylonitrile/Ecoflex (ZnO/PAN/Ecoflex) composite membrane is proposed. Due to [...] Read more.
Human–machine interaction is now deeply integrated into our daily lives. However, the rigidity and high-power supply of traditional devices limit their further development. Herein, a high-performance flexible piezoelectric sensor (HFPS) based on a novel zinc oxide/polyacrylonitrile/Ecoflex (ZnO/PAN/Ecoflex) composite membrane is proposed. Due to the synergistic piezoelectricity of ZnO and PAN, the output voltage/current of the HFPS is increased by 140%/100% compared to the pure Zno/Ecoflex composite membrane. Furthermore, the fabricated HFPSs also have excellent sensitivity, linearity, stability and flexibility under periodic pressure. On this basis, due to its flexibility, stretchability and battery-free characteristics, a self-powered HFPS-based intelligent glove is proposed to wirelessly control diverse electronic systems through human hand gestures. In the meanwhile, the intelligent glove has been successfully applied to car two-dimensional motion, light bulb control and fan control. With the advantages of simple operation, portability and low power consumption, the glove is expected to provide new application prospects for human–machine interaction systems. Full article
(This article belongs to the Special Issue Flexible Electronics: Sensors, Energy and Health)
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13 pages, 2455 KiB  
Article
Multi−Functional Gradient Fibrous Membranes Aiming at High Performance for Both Lithium–Sulfur and Zinc–Air Batteries
by Congli Zhang, Zeyu Geng, Ting Meng, Fei Ma, Xueya Xu, Yang Liu and Haifeng Zhang
Electronics 2023, 12(4), 885; https://doi.org/10.3390/electronics12040885 - 9 Feb 2023
Cited by 3 | Viewed by 1774
Abstract
Lithium–sulfur batteries have been considered one of the most promising energy storage batteries in the future of flexible and wearable electronics. However, the shuttling of polysulfides, low sulfur utilization, and bad cycle stability restricted the widespread application of lithium–sulfur batteries. Currently, gradient materials [...] Read more.
Lithium–sulfur batteries have been considered one of the most promising energy storage batteries in the future of flexible and wearable electronics. However, the shuttling of polysulfides, low sulfur utilization, and bad cycle stability restricted the widespread application of lithium–sulfur batteries. Currently, gradient materials with multiple functions can solve those defects simultaneously and can be applied to various parts of batteries. Herein, an electrospinningtriple−gradient Co−N−C/PVDF/PAN fibrous membrane was prepared and applied to lithium–sulfur batteries. The Co−N−C fibrous membrane provided efficient active sites, excellent electrode conductivity, and boosted polysulfide confinement. At the same time, the PVDF/PAN membrane enhances electron transfer and lithium−ion diffusion. As a result, the integrated S@Co−N−C/PVDF/PAN/Li battery delivered a high initial capacity of 1124.1 mA h g−1. Even under high sulfur loading (6 mg cm−2), this flexible Li–S battery still exhibits high areal capacity (846.9 mA h cm−2) without apparent capacity attenuation and security issues. Meanwhile, the gradient fibrous membranes can be used in zinc–air batteries, and the same double−gradient Co−N−C/PVDF membranes were also used as a binder−free air cathode with bifunctional catalytic activity and a facile hydrophobic and aerophile membrane, delivering remarkable cycling stability and small voltage gap in aqueous ZABs. The well−tunable structures and materials of the gradient strategy would bring inspiration for excellent performance in flexible and wearable energy storage devices. Full article
(This article belongs to the Special Issue Flexible Electronics: Sensors, Energy and Health)
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