Flexible thermoelectric power generator with Y-type structure using electrochemical deposition process

Huu, Trung Nguyen; Van, Toan Nguyen; Ono, Takahito

doi:10.1016/j.apenergy.2017.05.005

Cited by 122 publications

(50 citation statements)

References 30 publications

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“…Figure c,d shows that the fabricated device has reasonable flexibility in bending, where 24 pairs of Bi 2 Te 3 /Sb 2 Te 3 units are integrated into an area of 1 cm 2 . By attaching the device to the human body (310 K) surrounded by an ambient environment (288 K), an open‐circuit voltage of 56 mV and output power density of 3 µW cm −2 were achieved . Figure e shows reported results of higher output performance at higher applied temperatures.…”

Section: Fabrication and Design Of Fte Devicesmentioning

confidence: 97%

“…Rational structure design of FTE devices can contribute to higher output performance and versatile applications in a wide range of areas . In this section, we discuss and compare different structures proposed for FTE devices, including the π‐type structure and its derivatives, rolled‐up structures, fiber‐based structures, and single‐leg structures . By introducing and discussing the different fabrication techniques and related mechanisms of each design approach, we emphasize the structural impact on power output and practical applications.…”

Section: Fabrication and Design Of Fte Devicesmentioning

confidence: 99%

“…Although a few attempts to design a structure with lateral units have been reported, the energy harvesting of such a structure is in the lateral direction rather than the vertical direction (the vertical direction is the most desired direction in practical applications). To overcome this challenge, a Y‐type structure has been proposed where thermal energy can be vertically harvested with lateral TE legs . Figure a shows a schematic diagram of the Y‐type structure, in which Cu columns act not only in the role of metallic interconnectors, but also guide the heat flux to transfer heat generated vertically to laterally.…”

Section: Fabrication and Design Of Fte Devicesmentioning

confidence: 99%

Section: Fabrication and Design Of Fte Devicesmentioning

confidence: 99%

“…To overcome this challenge, a Y-type structure has been proposed where thermal energy can be vertically harvested with lateral TE legs. [374] Figure 24a shows a schematic diagram of the Y-type structure, in which Cu columns act not only in the role of metallic interconnectors, but also guide the heat flux to transfer heat generated vertically to laterally. Figure 24b shows a schematic illustration of the fabrication process.…”

Section: Wwwadvmatde Wwwadvancedsciencenewscommentioning

confidence: 99%

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Flexible Thermoelectric Materials and Generators: Challenges and Innovations

et al. 2019

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The urgent need for ecofriendly, stable, long‐lifetime power sources is driving the booming market for miniaturized and integrated electronics, including wearable and medical implantable devices. Flexible thermoelectric materials and devices are receiving increasing attention, due to their capability to convert heat into electricity directly by conformably attaching them onto heat sources. Polymer‐based flexible thermoelectric materials are particularly fascinating because of their intrinsic flexibility, affordability, and low toxicity. There are other promising alternatives including inorganic‐based flexible thermoelectrics that have high energy‐conversion efficiency, large power output, and stability at relatively high temperature. Herein, the state‐of‐the‐art in the development of flexible thermoelectric materials and devices is summarized, including exploring the fundamentals behind the performance of flexible thermoelectric materials and devices by relating materials chemistry and physics to properties. By taking insights from carrier and phonon transport, the limitations of high‐performance flexible thermoelectric materials and the underlying mechanisms associated with each optimization strategy are highlighted. Finally, the remaining challenges in flexible thermoelectric materials are discussed in conclusion, and suggestions and a framework to guide future development are provided, which may pave the way for a bright future for flexible thermoelectric devices in the energy market.

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Section: Fabrication and Design Of Fte Devicesmentioning

confidence: 97%

Section: Fabrication and Design Of Fte Devicesmentioning

confidence: 99%

Section: Fabrication and Design Of Fte Devicesmentioning

confidence: 99%

Section: Fabrication and Design Of Fte Devicesmentioning

confidence: 99%

Section: Wwwadvmatde Wwwadvancedsciencenewscommentioning

confidence: 99%

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Flexible Thermoelectric Materials and Generators: Challenges and Innovations

et al. 2019

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Energy Harvesting and Storage with Soft and Stretchable Materials

et al. 2021

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Soft robotics can interact with humans safely. 3) Devices built from stretchable materials have a greater mechanical degree of freedom. This allows electronics, displays, and sensors to be integrated into places that would be difficult or impossible with rigid devices and enables new types of human-computer interfaces. It also allows robotics to have enhanced levels of dexterity and complexity in movement (consider the octopus as an inspiring example). 4) Devices that can be deformed elastically can be engineered to have new or emerging properties, such as antennas that change frequency with elongation, [21] intelligent materials that can perform unconventional forms of logic, [22,23] or composites that change thermal conductivity, [24] electrical conductivity, [25] or dielectric properties with deformation. [26][27][28] Most robotic and electronic devices require electricity to function, as shown on the left side of Figure 1A. Electricity can power sensors, enable computation, drive locomotion, and transmit information. Although most devices use electricity from an outlet, such "tethered" devices create notable limitations. In addition to limiting the degree of freedom of robotic materials, plug-in devices must be within a chords-length of a functioning outlet, thereby confining the range of use of such devices. Although battery operated devices can operate for some time without being plugged-in, the need to do so periodically is at best a nuisance that limits the operating time of a device. At worst, it can lead to issues such as lack of compliance with wearable devices (that is, the device is taken off for charging and never put back on) or disruptions in operation (a particular problem for health care devices or remotely deployed devices). Thus, there is a compelling interest in harvesting energy from the ambient to create tetherless devices or even devices that need less charging. Figure 1A (right side) provides examples of applications that may benefit from harvesting, such as internetof-things (IOT) devices, soft robots, wearables, implantables, and deployables (that is, devices sent to remote locations that do not have electrical outlets). Energy Harvesting CategoriesStrategies to harness energy typically convert waste or otherwise unused energy from the ambient into electricity. Although This review highlights various modes of converting ambient sources of energy into electricity using soft and stretchable materials. These mechanical properties are useful for emerging classes of stretchable electronics, e-skins, bio-integrated wearables, and soft robotics. The ability to harness energy from the environment allows these types of devices to be tetherless, thereby leading to a greater range of motion (in the case of robotics), better compliance (in the case of wearables and e-skins), and increased application space (in the case of electronics). A variety of energy sources are available including mechanical (vibrations, human motion, wind/fluid motion), electromagnetic (radio frequency (RF), solar), and ther...

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Recent Advances in the Nanomaterials, Design, Fabrication Approaches of Thermoelectric Nanogenerators for Various Applications

Kim

Kumar

Annamalai

et al. 2022

Adv Materials Inter

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power-dense, owing to their tuneable nanostructures. Hence, smaller TENGs are better suited for small form-factor applications like wearable electronics, internet of things (IoT) devices, and self-powered sensors. However, the higher complexity and cost of TENGs than TEGs inhibit their widespread adoption. This review appraises the latest advances in TENG materials, design, and fabrication in optimizing the performance of TENGs, making TENGs more viable for real-world applications. More precisely, this work examines how nanostructure engineering, nanomaterial compositing, and post-synthesis treatment approaches have enhanced the TE properties of common and promising TE materials, including tellurides, selenides, metal oxides, metal alloys, silicon, carbon nanomaterials, and organic compounds. Given that the TE material is a key component in TENGs, this review highlights how to optimize other vital parameters, including the TENG configuration, contact interface, form factor, heat sink use, and folded shape for specific applications. Lastly, critical attributes of TENGs used in wearable electronics, sensors, implantable electronics, solar energy conversion, and waste heat recovery are analyzed.

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Flexible thermoelectric power generator with Y-type structure using electrochemical deposition process

Cited by 122 publications

References 30 publications

Flexible Thermoelectric Materials and Generators: Challenges and Innovations

Flexible Thermoelectric Materials and Generators: Challenges and Innovations

Energy Harvesting and Storage with Soft and Stretchable Materials

Recent Advances in the Nanomaterials, Design, Fabrication Approaches of Thermoelectric Nanogenerators for Various Applications

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