Triaxial braided piezo fiber energy harvesters for self-powered wearable technologies

Mokhtari, Fatemeh; Foroughi, Javad; Zheng, Tian; Cheng, Zhenxiang; Spinks, Geoffrey M.

doi:10.1039/c8ta10964h

Cited by 111 publications

(98 citation statements)

References 55 publications

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“…As‐spun PVDF fiber generated a maximum voltage output of 480 mV, while the voltage output of the braided PVDF/BT 10 fiber was found to be 1100 mV. This value is 229% and 250% higher, respectively, than PVDF fiber or previously reported for melt‐spun hybrid PVDF/BT fiber with the same 10 wt% content of BT nanoparticles 49,19. The voltage output of the braided PVDF/BT 20 with more than 10 wt% BT nanoparticles generated a maximum voltage output of 895 mV which is much lower compared to the braided PVDF/BT 10 fiber.…”

Section: Resultsmentioning

confidence: 54%

“…It was found that the force sensitivity of the textile energy harvesters was 3, 4, and 10 V N −1 for woven, braided, and knitted energy generators, respectively. The results revealed that the knitted energy generators exhibited an almost 6.3‐fold increase in the value (10 V N −1 ) compared to the recent reported 49…”

Section: Resultsmentioning

confidence: 54%

“…The elongation at break of the as‐prepared PVDF and PVDF/BT 10 nanocomposite fibers were 137% and 80%, respectively. These values are 685% and 400% higher than previously reported for melt‐spun PVDF fiber 49,56. The use of 20 wt% BT nanoparticles in the polymer matrix produced PVDF/BT 20 fiber with significantly lower Young's modulus and tensile strength compared with the PVDF fiber.…”

Section: Resultsmentioning

confidence: 62%

“…Initial evaluation of piezoelectric energy harvesting performance of the hybrid fibers used the triaxial braided textile structure described in our previously reported results 49. The dielectric constant (ε r ) and dielectric loss (tan δ) of the as‐prepared braided wearable energy generators were measured at room temperature in a frequency range up to 10 6 Hz as shown in Figure a,b.…”

Section: Resultsmentioning

confidence: 99%

“…The force sensitivity and power output of the wearable energy harvesters based on PVDF/BT 10 textile structure were compared, as shown in Figure a. The sensitivity of the wearable energy generators was assessed by a ratio of voltage output to the applied force when the textiles were subjected to compress using repeated impact as shown in Figure S7 in the Supporting Information 49. The voltage output of the piezoelectric textiles was proportional to the applied force.…”

Section: Resultsmentioning

confidence: 99%

See 4 more Smart Citations

Wearable Electronic Textiles from Nanostructured Piezoelectric Fibers

Mokhtari

Spinks

Fay

et al. 2020

Adv Materials Technologies

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137

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to produce a new generation of smart garments.Such affordable smart garments could fulfil diverse applications, ranging from work wear in specific industries to the almost infinite scenarios of personal use including energy harvesting/storage, force/pressure measurement, porosity or color variation, and sensors (movement, temperature, chemicals). [1][2][3][4][5][6][7] However, performance, scalability, and cost problems have restricted the deployment of currently available smart textiles. To build smart textiles on an industrial scale, method of manufacturing and material selection are two important requirements. The approach of new energy materials and novel fabrication methods are essential to develop wearable technologies. Wearable energy generating devices that can be seamlessly integrated into garments are a critical component of the wearable electronics genre. Currently flexible fiber energy harvesters have attracted significant attention due to their ability to be integrated into fabrics, or stitched into existing textiles. Large-scale production of energy harvester fibers using conventional manufacturing processes, however, is still a challenge.Energy harvesting from environmental mechanical sources such as body movements including finger imparting, [8] pushing, [9] stretching, [10] bending, [11] twisting, [12] air flow, [13] transportation movement, [14] and sound waves [15] has attracted widespread attention to promote flexible self-powered devices. [16] The best common mechanical energy harvesting methods are based on piezoelectric materials. [17] Piezoelectric materials can be classified in three categories: piezoelectric ceramics, piezoelectric polymers, and piezoelectric composites. [18] Unlike the energy harvesters utilizing solar or thermal energy, performance of piezoelectric generators is generally not limited by environmental factors. [19] Piezoelectric generators have received massive interest in energy harvesting technology due to their unique ability to capture the ambient vibrations to generate electric signals. [20] The unique energy transduction of piezoelectric materials enables their applications in fields of energy harvesting, actuators, [21] sensors, [22] structural health monitoring, and use in biomedical devices. [23] Numerous approaches have been used to fabricate piezoelectric generators, such as coating, [24] spinning, [25] depositing, [26] and printing. [27] Wearable energy harvesting is of practical interest for many years and for diverse applications, including development of self-powered wireless sensors within garments for human health monitoring. Herein, a novel approach is reported to create wearable energy generators and sensors using nanostructured hybrid piezoelectric fibers and exploiting the enormous variety of textile architectures. It is found that high performance hybrid piezofiber is obtained using a barium titanate (BT) nanoparticle and poly(vinylidene fluoride) (PVDF) with a mass ratio of 1:10. These fibers are knitted to form a wearable energy generator that pr...

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Section: Resultsmentioning

confidence: 54%

Section: Resultsmentioning

confidence: 54%

Section: Resultsmentioning

confidence: 62%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

See 3 more Smart Citations

Wearable Electronic Textiles from Nanostructured Piezoelectric Fibers

Mokhtari

Spinks

Fay

et al. 2020

Adv Materials Technologies

Self Cite

137

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show abstract

Energy Harvesting Fibers

2021

Textile‐Based Energy Harvesting and Storage Devices for Wearable Electronics

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Fiber/Fabric‐Based Piezoelectric and Triboelectric Nanogenerators for Flexible/Stretchable and Wearable Electronics and Artificial Intelligence

2019

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fields is breaking out, such as the Internet of Things (IoTs), big data, humanoid robotics, and artificial intelligence (AI). Nowadays, the rapid advancement of these functional electronic devices is transforming the way people communicate with each other and with their surroundings, which has integrated our world into an intelligent information network. Owing to that no electronics works without electricity, the processes of human informatization and intelligence depend on broad energy supplies and powerful power supports. In other words, electric power can be regarded as the flowing blood that keeps every components of the current society running normally and healthily. However, with the rapid consumption of conventional fossil fuels as well as the growing voice of environmental protection, the current energy structure and its supply status are facing unprecedented challenges. On the one hand, the overwhelming energy crisis and ecological deterioration have become huge bottlenecks restricting socioeconomic development.[1] Some serious situations may even worsen to the root of interstate interest conflicts or the disaster that threatens the survival of mankind. In this case, the transform of energy structure from scarce, pollution-prone, and irreproducible mineral resources to abundant, environmentally friendly, and renewable green energies is desperately required. On the other hand, the traditional centralized, immobile, and ordered energy supply patterns based on power plants are incompatible with the present development of functional electronics associated with individual person, which follows a general trend of miniaturization, portability, and low power. As the information age is coming, billions of things must be connected with sensors for various measurements, perceptions, controls, and data transmissions. [2] These mobile, human-oriented, randomly and massively distributed sensing networks also require the corresponding matched power supply system. Therefore, it turns out that the unreasonable energy structures as well as the mismatched supply pattern lead to the current development dilemma.Portable power supplies and self-powered systems are the most promising solutions for the above straits. For wearable power sources, one of the compromises is to choose small-size Integration of advanced nanogenerator technology with conventional textile processes fosters the emergence of textile-based nanogenerators (NGs), which will inevitably promote the rapid development and widespread applications of next-generation wearable electronics and multifaceted artificial intelligence systems. NGs endow smart textiles with mechanical energy harvesting and multifunctional self-powered sensing capabilities, while textiles provide a versatile flexible design carrier and extensive wearable application platform for their development. However, due to the lack of an effective interactive platform and communication channel between researchers specializing in NGs and those good at textiles, it is rather difficult to achieve fiber...

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Triaxial braided piezo fiber energy harvesters for self-powered wearable technologies

Abstract: A new strategy of a triaxial architecture based on piezoelectric fibers, silver coated nylon and braiding technology as a wearable energy harvesting generator.

Cited by 111 publications

References 55 publications

Wearable Electronic Textiles from Nanostructured Piezoelectric Fibers

Wearable Electronic Textiles from Nanostructured Piezoelectric Fibers

Energy Harvesting Fibers

Fiber/Fabric‐Based Piezoelectric and Triboelectric Nanogenerators for Flexible/Stretchable and Wearable Electronics and Artificial Intelligence

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