Fabrication of Polyaniline/Graphene/Polyester Textile Electrode Materials for Flexible Supercapacitors with High Capacitance and Cycling Stability

2016 ◽  
Vol 11 (13) ◽  
pp. 1906-1912 ◽  
Author(s):  
Fu Shao ◽  
Shao-Wei Bian ◽  
Quan Zhu ◽  
Mei-Xia Guo ◽  
Si Liu ◽  
...  
Keyword(s):  
Electrode Materials ◽  
Cycling Stability ◽  
High Capacitance ◽  
Flexible Supercapacitors ◽  
Textile Electrode ◽  
Polyester Textile

Electrode materials and device architecture strategies for flexible supercapacitors in wearable energy storage

2021 ◽  
Vol 9 (13) ◽  
pp. 8099-8128
Author(s):  
Xinyu Zhang ◽  
Changzhong Jiang ◽  
Jing Liang ◽  
Wei Wu
Keyword(s):  
Energy Storage ◽  
Electrode Materials ◽  
Flexible Supercapacitors ◽  
Device Architecture

Efficient strategies of electrode materials and the device architecture for wearable flexible supercapacitors have been systematically summarized.

scholarly journals A Review of Electrospun Carbon Nanofiber-Based Negative Electrode Materials for Supercapacitors

Electrochem ◽  
2021 ◽  
Vol 2 (2) ◽  
pp. 236-250
Author(s):  
Arjun Prasad Tiwari ◽  
Tanka Mukhiya ◽  
Alagan Muthurasu ◽  
Kisan Chhetri ◽  
Minju Lee ◽  
...  
Keyword(s):  
Energy Storage ◽  
Electrode Materials ◽  
Carbon Nanofiber ◽  
Negative Electrode ◽  
Smart Devices ◽  
Potential Candidate ◽  
Free Standing ◽  
High Capacitance ◽  
Negative Electrode Materials ◽  
Carbon Based

The development of smart negative electrode materials with high capacitance for the uses in supercapacitors remains challenging. Although several types of electrode materials with high capacitance in energy storage have been reported, carbon-based materials are the most reliable electrodes due to their high conductivity, high power density, and excellent stability. The most common complaint about general carbon materials is that these electrode materials can hardly ever be used as free-standing electrodes. Free-standing carbon-based electrodes are in high demand and are a passionate topic of energy storage research. Electrospun nanofibers are a potential candidate to fill this gap. However, the as-spun carbon nanofibers (ECNFs) have low capacitance and low energy density on their own. To overcome the limitations of pure CNFs, increasing surface area, heteroatom doping and metal doping have been chosen. In this review, we introduce the negative electrode materials that have been developed so far. Moreover, this review focuses on the advances of electrospun nanofiber-based negative electrode materials and their limitations. We put forth a future perspective on how these limitations can be overcome to meet the demands of next-generation smart devices.

Fabrication of nickel-foam-supported layered zinc–cobalt hydroxide nanoflakes for high electrochemical performance in supercapacitors

2014 ◽  
Vol 50 (76) ◽  
pp. 11188-11191 ◽  
Author(s):  
Peng Yuan ◽  
Ning Zhang ◽  
Dan Zhang ◽  
Tao Liu ◽  
Limiao Chen ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Specific Capacitance ◽  
Electrode Materials ◽  
Solvothermal Method ◽  
Nickel Foam ◽  
Cycling Stability ◽  
Cobalt Hydroxide ◽  
Facile Solvothermal Method

Nickel foam supported Zn–Co hydroxide nanoflakes were fabricated by a facile solvothermal method, which exhibited excellent specific capacitance and remarkable cycling stability as electrode materials in supercapacitors.

scholarly journals Nanostructure selenium compounds as pseudocapacitive electrodes for high-performance asymmetric supercapacitor

2018 ◽  
Vol 5 (1) ◽  
pp. 171186 ◽  
Author(s):  
Guofu Ma ◽  
Fengting Hua ◽  
Kanjun Sun ◽  
Enke Fenga ◽  
Hui Peng ◽  
...  
Keyword(s):  
Electrode Materials ◽  
Rate Capability ◽  
Negative Electrode ◽  
High Specific Capacitance ◽  
High Energy ◽  
Cycling Stability ◽  
High Energy Density ◽  
Storage Device ◽  
Asymmetric Supercapacitor ◽  
Capacitance Performance

The electrochemical performance of an energy conversion and storage device like the supercapacitor mainly depends on the microstructure and morphology of the electrodes. In this paper, to improve the capacitance performance of the supercapacitor, the all-pseudocapacitive electrodes of lamella-like Bi 18 SeO 29 /BiSe as the negative electrode and flower-like Co 0.85 Se nanosheets as the positive electrode are synthesized by using a facile low-temperature one-step hydrothermal method. The microstructures and morphology of the electrode materials are carefully characterized, and the capacitance performances are also tested. The Bi 18 SeO 29 /BiSe and Co 0.85 Se have high specific capacitance (471.3 F g –1 and 255 F g –1 at 0.5 A g –1 ), high conductivity, outstanding cycling stability, as well as good rate capability. The assembled asymmetric supercapacitor completely based on the pseudocapacitive electrodes exhibits outstanding cycling stability (about 93% capacitance retention after 5000 cycles). Moreover, the devices exhibit high energy density of 24.2 Wh kg –1 at a power density of 871.2 W kg –1 in the voltage window of 0–1.6 V with 2 M KOH solution.

Hexagonal prism arrays constructed using ultrathin porous nanoflakes of carbon doped mixed-valence Co–Mn–Fe phosphides for ultrahigh areal capacitance and remarkable cycling stability

2019 ◽  
Vol 7 (9) ◽  
pp. 4431-4437 ◽  
Author(s):  
Richao Niu ◽  
Gengjie Wang ◽  
Yuying Ding ◽  
Shaochun Tang ◽  
Xuemin Hu ◽  
...  
Keyword(s):  
Mixed Valence ◽  
Rate Capability ◽  
Cycling Stability ◽  
Hexagonal Prism ◽  
High Capacitance ◽  
Carbon Doped ◽  
Areal Capacitance

With novel hierarchical hexagonal prism arrays, a carbon-doped mixed-valence Co–Mn–Fe phosphide electrode shows high capacitance, rate capability and cycling stability.

scholarly journals Systematic review of textile-based electrodes for long-term and continuous surface electromyography recording

2019 ◽  
Vol 90 (2) ◽  
pp. 227-244
Author(s):  
Li Guo ◽  
Leif Sandsjö ◽  
Max Ortiz-Catalan ◽  
Mikael Skrifvars
Keyword(s):  
Systematic Review ◽  
Health Monitoring ◽  
Surface Electromyography ◽  
Electrode Materials ◽  
Myoelectric Activity ◽  
Self Administration ◽  
Smart Textile ◽  
Textile Electrode ◽  
Future Work

This systematic review concerns the use of smart textiles enabled applications based on myoelectric activity. Electromyography (EMG) is the technique for recording and evaluating electric signals related to muscle activity (myoelectric). EMG is a well-established technique that provides a wealth of information for clinical diagnosis, monitoring, and treatment. Introducing sensor systems that allow for ubiquitous monitoring of health conditions using textile integrated solutions not only opens possibilities for ambulatory, long-term, and continuous health monitoring outside the hospital, but also for autonomous self-administration. Textile-based electrodes have demonstrated potential as a fully operational alternative to ‘standard’ Ag/AgCl electrodes for recording surface electromyography (sEMG) signals. As a substitute for Ag/AgCl electrodes fastened to the skin by taping or pre-gluing adhesive, textile-based electrodes have the advantages of being soft, flexible, and air permeable; thus, they have advantages in medicine and health monitoring, especially when self-administration, real-time, and long-term monitoring is required. Such advances have been achieved through various smart textile techniques; for instance, adding functions in textiles, including fibers, yarns, and fabrics, and various methods for incorporating functionality into textiles, such as knitting, weaving, embroidery, and coating. In this work, we reviewed articles from a textile perspective to provide an overview of sEMG applications enabled by smart textile strategies. The overview is based on a literature evaluation of 41 articles published in both peer-reviewed journals and conference proceedings focusing on electrode materials, fabrication methods, construction, and sEMG applications. We introduce four textile integration levels to further describe the various textile electrode sEMG applications reported in the reviewed literature. We conclude with suggestions for future work along with recommendations for the reporting of essential benchmarking information in current and future textile electrode applications.

scholarly journals Research Progress of Graphene-Based Materials on Flexible Supercapacitors

Coatings ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 892
Author(s):  
Yongquan Du ◽  
Peng Xiao ◽  
Jian Yuan ◽  
Jianwen Chen
Keyword(s):  
Flexible Electronics ◽  
Electrode Materials ◽  
Graphene Quantum Dots ◽  
High Specific Surface Area ◽  
Research Progress ◽  
Flexible Electrodes ◽  
Long Cycle Life ◽  
Advantages And Disadvantages ◽  
Flexible Supercapacitors ◽  
Materials Used

With the development of wearable and flexible electronic devices, there is an increasing demand for new types of flexible energy storage power supplies. The flexible supercapacitor has the advantages of fast charging and discharging, high power density, long cycle life, good flexibility, and bendability. Therefore, it exhibits great potential for use in flexible electronics. In flexible supercapacitors, graphene materials are often used as electrode materials due to the advantages of their high specific surface area, high conductivity, good mechanical properties, etc. In this review, the classification of flexible electrodes and some common flexible substrates are firstly summarized. Secondly, we introduced the advantages and disadvantages of five graphene-based materials used in flexible supercapacitors, including graphene quantum dots (GQDs), graphene fibers (GFbs), graphene films (GFs), graphene hydrogels (GHs), and graphene aerogels (GAs). Then, we summarized the latest developments in the application of five graphene-based materials for flexible electrodes. Finally, the defects and outlooks of GQDs, GFbs, GFs, GHs, and GAs used in flexible electrodes are given.

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