Thermoelectric Nanocomposite for Energy Harvesting

Ghafari, Ehsan; Severgnini, Frederico M.; Ghahari, SeyedAli; Feng, Yining; Lee, Eu Jin; Zhang, Chaoyi; Jiang, Xiaodong; Lü, Na

doi:10.1002/9783527342501.ch8

Cited by 5 publications

(4 citation statements)

References 83 publications

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“…It has two prominent features such as its melting point is very high ~1300 K and it has magnificent stability at high temperatures, which is why this material has been used in RTGs by NASA, for the Mars mission in 2013, and other high temperature applications. Nevertheless, the main challenges associated with this material are its high κ lat due to the low mass of SiGe, and their strong chemical bonds, which further minimize the ZT . Thus, the optimization of SiGe alloys is mainly based on the reduction of its κ lat .…”

Section: High Performance Inorganic Te Materialsmentioning

confidence: 99%

“…Nevertheless, the main challenges associated with this material are its high κ lat due to the low mass of SiGe, and their strong chemical bonds, which further minimize the ZT. 22,33,457 Thus, the optimization of SiGe alloys is mainly based on the reduction of its κ lat . Typically, the ZT value of n-type SiGe alloys is higher than p-type SiGe due to its high κ t and higher n. For instance, the ZT value of n-type SiGe alloys is 1.3 and its κ t is about 2.8 Wm −1 K −1 at 1173 K, while for p-type SiGe, the maximum ZT value is about ~0.5.…”

Section: Sige Alloysmentioning

confidence: 99%

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Inorganic thermoelectric materials: A review

et al. 2020

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Summary Thermoelectric generator, which converts heat into electrical energy, has great potential to power portable devices. Nevertheless, the efficiency of a thermoelectric generator suffers due to inefficient thermoelectric material performance. In the last two decades, the performance of inorganic thermoelectric materials has been significantly advanced through rigorous efforts and novel techniques. In this review, major issues and recent advancements that are associated with the efficiency of inorganic thermoelectric materials are encapsulated. In addition, miscellaneous optimization strategies, such as band engineering, energy filtering, modulation doping, and low dimensional materials to improve the performance of inorganic thermoelectric materials are reported. The methodological reviews and analyses showed that all these techniques have significantly enhanced the Seebeck coefficient, electrical conductivity, and reduced the thermal conductivity, consequently, improved ZT value to 2.42, 2.6, and 1.85 for near‐room, medium, and high temperature inorganic thermoelectric material, respectively. Moreover, this review also focuses on the performance of silicon nanowires and their common fabrication techniques, which have the potential for thermoelectric power generation. Finally, the key outcomes along with future directions from this review are discussed at the end of this article.

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Section: High Performance Inorganic Te Materialsmentioning

confidence: 99%

Section: Sige Alloysmentioning

confidence: 99%

Inorganic thermoelectric materials: A review

et al. 2020

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“…These materials offer reliable, pollution-free, and enduring solutions for power generation, refrigeration, and temperature control. 1,2 However, the widespread commercialization of these materials is hindered by the low energy-conversion efficiency they offer. To overcome this challenge, we need to focus on the properties of thermoelectric materials.…”

Section: Introductionmentioning

confidence: 99%

Exploring the multifaceted properties: electronic, magnetic, Curie temperature, elastic, thermal, and thermoelectric characteristics of gadolinium-filled PtSb₃ skutterudite

Nayak,

Gupta

2024

RSC Adv.

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“…This effect has been applied to develop several devices such as energy harvester which can be used in applications where outside power is unavailable, and batteries are not a feasible option. The energy harvester nanogenerator can also be used as [1][2][3][4][5][6][7][8][9][10][11][12] an individual power source for small electronic devices. In civil engineering, this can be applied to power the wireless sensor for health monitoring of the bridges.…”

Section: Introductionmentioning

confidence: 99%

An Efficient Polyvinylidene Fluoride (PVDF) Nanogenerator for Energy Harvesting in Low Frequency Range

Ghafari¹,

Nantung²,

Lü³

2019

ES Mater.Manuf.

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There are abundant mechanical energy available in low frequency range, which can be directly converted into electricity using piezoelectric energy harvester. However, very few piezoelectric energy harvester have high conversion efficiency at low frequency range. This study aims to develop an efficient piezoelectric nanogenerator which can be used in low frequency range for energy harvesting applications using PVDF polymers. The feasibility of using PVDF device for energy harvesting was assessed by using a mechanical vibration setup. In addition, the effect of both amplitude and frequency on the voltage output of the PVDF energy harvester has been studied. According to the results, the optimized frequency range for the device was found to be 45 Hz. The results indicated that the voltage output starts to decay at a higher frequency which can be due to the insufficient time for the PVDF nanofiber to be recovered from the induced strain. The variation of the amplitude has a great influence on the voltage output of the piezoelectric device. The voltage output of the PVDF device is enhanced with increasing the amplitude due to the higher amount of induced strain. In fact, the amount of induced strain is the primary source of the available mechanical energy which can be fed into the piezoelectric device to be converted to the electrical energy. The results clearly show that both frequency and amplitude can affect the voltage output of the piezoelectric device. The highest obtained voltage output can be obtained at the frequency range between 30-45 Hz.

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Thermoelectric Nanocomposite for Energy Harvesting

Cited by 5 publications

References 83 publications

Inorganic thermoelectric materials: A review

Inorganic thermoelectric materials: A review

Exploring the multifaceted properties: electronic, magnetic, Curie temperature, elastic, thermal, and thermoelectric characteristics of gadolinium-filled PtSb₃ skutterudite

An Efficient Polyvinylidene Fluoride (PVDF) Nanogenerator for Energy Harvesting in Low Frequency Range

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Thermoelectric Nanocomposite for Energy Harvesting

Cited by 5 publications

References 83 publications

Inorganic thermoelectric materials: A review

Inorganic thermoelectric materials: A review

Exploring the multifaceted properties: electronic, magnetic, Curie temperature, elastic, thermal, and thermoelectric characteristics of gadolinium-filled PtSb3 skutterudite

An Efficient Polyvinylidene Fluoride (PVDF) Nanogenerator for Energy Harvesting in Low Frequency Range

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Product

Resources

About

Exploring the multifaceted properties: electronic, magnetic, Curie temperature, elastic, thermal, and thermoelectric characteristics of gadolinium-filled PtSb₃ skutterudite