scholarly journals Multilayer supercapacitor threads for woven flexible circuits

Circuit World ◽  
2015 ◽  
Vol 41 (4) ◽  
pp. 154-160
Author(s):  
Fulian Qiu ◽  
David Harrison
Keyword(s):  
Energy Storage ◽  
Electronic Devices ◽  
Dip Coating ◽  
Gel Electrolyte ◽  
Content Type ◽  
Storage Devices ◽  
Single Thread ◽  
Wearable Electronic ◽  
Pva Gel ◽  
Wearable Electronic Devices

Purpose – Wearable electronic devices have emerged which require compact, flexible power storage devices such as batteries and supercapacitors. Recently, energy storage devices have been developed based on supercapacitor threads. However, current supercapacitor energy storage threads which use electrolytes based on aqueous gels have a 1 V potential window. This is much lower than the voltage required by most electronic devices. This current contribution presents an approach for fabricating a multilayer supercapacitor working as a circuit unit, in which series combinations of the multiple layer structures can achieve a higher potential window, which can better meet the needs of wearable electronic devices. Design/methodology/approach – Two-capacitive layer thread supercapacitors were fabricated using a semi-automatic dip coating method by coating two capacitive layers sequentially on a 50 μm stainless steel core wire, each capacitive layer includes ink, aqueous-based gel electrolyte and silver conductive paint layers. Findings – Two capacitive layers of the single thread supercapacitor can work independently, or as combination circuits – parallel and series. Cyclic voltammograms showed that all flexible circuits have high electrochemical stability. For the case of series circuit configuration, with H3PO-polyvinyl alcohol (PVA) gel electrolyte, a working potential window of 2 V was achieved. Originality/value – A flexible single thread supercapacitor of multilayer structure, with working voltage above 1 V in H3PO4-PVA gel electrolyte, has not been reported before. A semi-automatic dip coating setup used to process the thread supercapacitor has high potential for transfer to an industrial environment for mass production.

Rationally designed Hierarchical C/TiO2/Ti multilayer Core-sheath Wires for High-performance Energy Storage Devices

Nanoscale ◽  
2021 ◽  
Author(s):  
Wei Cao ◽  
Yun Gong ◽  
Wenhao Wang ◽  
Mingzhou Chen ◽  
Junhe Yang ◽  
...  
Keyword(s):  
Energy Storage ◽  
High Performance ◽  
Electronic Devices ◽  
Energy Storage Devices ◽  
Power Sources ◽  
Storage Devices ◽  
Wearable Electronic ◽  
Wearable Electronic Devices

Fiber-shaped supercapacitors (FSCs) are promising power sources for wearable electronic devices due to their small size, excellent flexibility and deformability. The performance of FSCs has been severely affected by the...

scholarly journals Hierarchical Ni(OH)2/Cu(OH)2 interwoven nanosheets in situ grown on Ni–Cu–P alloy plated cotton fabric for flexible high-performance energy storage

2020 ◽  
Vol 2 (8) ◽  
pp. 3358-3366
Author(s):  
Man Zhou ◽  
Zhihang Jin ◽  
Lifang Su ◽  
Kai Li ◽  
Hong Zhao ◽  
...  
Keyword(s):  
Energy Storage ◽  
Cotton Fabric ◽  
High Performance ◽  
Mechanical Performance ◽  
Electronic Devices ◽  
High Conductivity ◽  
Wearable Electronic ◽  
Wearable Electronic Devices

Flexible Ni(OH)2/Cu(OH)2@Ni–Cu–P alloy coated on cotton fabric with high conductivity and excellent mechanical performance is available for future smart and wearable electronic devices.

Nature-inspired hierarchical materials for sensing and energy storage applications

2021 ◽  
Author(s):  
Chunping Xu ◽  
Alain R. Puente-Santiago ◽  
Daily Rodríguez-Padrón ◽  
Mario J. Muñoz-Batista ◽  
Md Ariful Ahsan ◽  
...  
Keyword(s):  
Energy Storage ◽  
High Performance ◽  
Materials Science ◽  
Electronic Devices ◽  
Hierarchical Materials ◽  
Science Community ◽  
Wearable Electronic ◽  
Hierarchical Architectures ◽  
Energy Storage Applications ◽  
Wearable Electronic Devices

Nature-inspired hierarchical architectures have recently drawn enormous interest in the materials science community, being considered as promising materials for the development of high-performance wearable electronic devices.

Characteristics of Discharge Currents Measured through Body-Attached Metal for Modeling ESD from Wearable Electronic Devices

2016 ◽  
Vol E99.B (1) ◽  
pp. 186-191 ◽  
Author(s):  
Takeshi ISHIDA ◽  
Fengchao XIAO ◽  
Yoshio KAMI ◽  
Osamu FUJIWARA ◽  
Shuichi NITTA
Keyword(s):  
Electronic Devices ◽  
Wearable Electronic ◽  
Wearable Electronic Devices

scholarly journals Recent Progress of Fluxgate Magnetic Sensors: Basic Research and Application

Sensors ◽  
2021 ◽  
Vol 21 (4) ◽  
pp. 1500
Author(s):  
Songrui Wei ◽  
Xiaoqi Liao ◽  
Han Zhang ◽  
Jianhua Pang ◽  
Yan Zhou
Keyword(s):  
Recent Progress ◽  
Electronic Devices ◽  
Basic Research ◽  
Research Direction ◽  
Magnetic Sensor ◽  
Magnetic Sensors ◽  
Future Research ◽  
Calibration Methods ◽  
Wearable Electronic ◽  
Wearable Electronic Devices

Fluxgate magnetic sensors are especially important in detecting weak magnetic fields. The mechanism of a fluxgate magnetic sensor is based on Faraday’s law of electromagnetic induction. The structure of a fluxgate magnetic sensor mainly consists of excitation windings, core and sensing windings, similar to the structure of a transformer. To date, they have been applied to many fields such as geophysics and astro-observations, wearable electronic devices and non-destructive testing. In this review, we report the recent progress in both the basic research and applications of fluxgate magnetic sensors, especially in the past two years. Regarding the basic research, we focus on the progress in lowering the noise, better calibration methods and increasing the sensitivity. Concerning applications, we introduce recent work about fluxgate magnetometers on spacecraft, unmanned aerial vehicles, wearable electronic devices and defect detection in coiled tubing. Based on the above work, we hope that we can have a clearer prospect about the future research direction of fluxgate magnetic sensor.

Engineering flexible carbon nanofibers concatenated MOFs-derived hollow octahedral CoFe2O4 as anode materials for enhanced lithium storage

2021 ◽  
Author(s):  
Fangfang Xue ◽  
Yangyang Li ◽  
Chen Liu ◽  
Zhigang Zhang ◽  
Jun Lin ◽  
...  
Keyword(s):  
Mechanical Property ◽  
Anode Materials ◽  
Electrode Materials ◽  
Electronic Devices ◽  
High Capacity ◽  
Lithium Ion ◽  
Lithium Storage ◽  
Excellent Mechanical Property ◽  
Wearable Electronic ◽  
Wearable Electronic Devices

Constructing suitable electrode materials with high capacity and excellent mechanical property is indispensable for flexible lithium-ion batteries (LIBs) to satisfy the growing flexible and wearable electronic devices. Herein, a necklace-like...

scholarly journals Textile-Based Triboelectric Nanogenerators for Wearable Self-Powered Microsystems

Micromachines ◽  
2021 ◽  
Vol 12 (2) ◽  
pp. 158
Author(s):  
Peng Huang ◽  
Dan-Liang Wen ◽  
Yu Qiu ◽  
Ming-Hong Yang ◽  
Cheng Tu ◽  
...  
Keyword(s):  
Rapid Development ◽  
Electronic Devices ◽  
Quantitative Relationship ◽  
Triboelectric Nanogenerator ◽  
Output Performance ◽  
Integrated Microsystems ◽  
Wearable Electronic ◽  
Self Powered ◽  
Representative Work ◽  
Wearable Electronic Devices

In recent years, wearable electronic devices have made considerable progress thanks to the rapid development of the Internet of Things. However, even though some of them have preliminarily achieved miniaturization and wearability, the drawbacks of frequent charging and physical rigidity of conventional lithium batteries, which are currently the most commonly used power source of wearable electronic devices, have become technical bottlenecks that need to be broken through urgently. In order to address the above challenges, the technology based on triboelectric effect, i.e., triboelectric nanogenerator (TENG), is proposed to harvest energy from ambient environment and considered as one of the most promising methods to integrate with functional electronic devices to form wearable self-powered microsystems. Benefited from excellent flexibility, high output performance, no materials limitation, and a quantitative relationship between environmental stimulation inputs and corresponding electrical outputs, TENGs present great advantages in wearable energy harvesting, active sensing, and driving actuators. Furthermore, combined with the superiorities of TENGs and fabrics, textile-based TENGs (T-TENGs) possess remarkable breathability and better non-planar surface adaptability, which are more conducive to the integrated wearable electronic devices and attract considerable attention. Herein, for the purpose of advancing the development of wearable electronic devices, this article reviews the recent development in materials for the construction of T-TENGs and methods for the enhancement of electrical output performance. More importantly, this article mainly focuses on the recent representative work, in which T-TENGs-based active sensors, T-TENGs-based self-driven actuators, and T-TENGs-based self-powered microsystems are studied. In addition, this paper summarizes the critical challenges and future opportunities of T-TENG-based wearable integrated microsystems.

scholarly journals Exfoliation in a low boiling point solvent and electrochemical applications of MoO3

2020 ◽  
Vol 11 ◽  
pp. 662-670
Author(s):  
Matangi Sricharan ◽  
Bikesh Gupta ◽  
Sreejesh Moolayadukkam ◽  
H S S Ramakrishna Matte
Keyword(s):  
Energy Storage ◽  
Electrode Material ◽  
Electronic Devices ◽  
High Specific Capacitance ◽  
Two Dimensional ◽  
Energy Storage Devices ◽  
Intrinsic Nature ◽  
Storage Devices ◽  
Scan Rate ◽  
First Time

MoO3 is a versatile two-dimensional transition metal oxide having applications in areas such as energy storage devices, electronic devices and catalysis. To efficiently utilize the properties of MoO3 arising from its two-dimensional nature exfoliation is necessary. In this work, the exfoliation of MoO3 is carried out in 2-butanone for the first time. The achieved concentration of the dispersion is about 0.57 mg·mL−1 with a yield of 5.7%, which are the highest values reported to date. These high values of concentration and yield can be attributed to a favorable matching of energies involved in exfoliation and stabilization of MoO3 nanosheets in 2-butanone. Interestingly, the MoO3 dispersion in 2-butanone retains its intrinsic nature even after exposure to sunlight for 24 h. The composites of MoO3 nanosheets were used as an electrode material for supercapacitors and showed a high specific capacitance of 201 F·g−1 in a three-electrode configuration at a scan rate of 50 mV·s−1.

Sign in / Sign up

Export Citation Format

Share Document