Synthesis by mechanical alloying and thermoelectric properties of Cu2Te

Sridhar, K.; Chattopadhyay, K.

doi:10.1016/s0925-8388(97)00266-1

Cited by 73 publications

(49 citation statements)

References 8 publications

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“…[1,2] Among them, tellurides are attractive materials for thermoelectric applications owing to their very high thermopower values and the fact that both p-and n-type materials can be obtained by doping. [3] For instance, silver telluride alloys possess interesting thermoelectrical, electrical, and magnetoresistive properties and find wide applications in the fields of thermoelectronics, magnetics, and sensors. The low-temperature phase of monoclinic silver telluride is a semiconductor with a narrow band gap, high carrier mobility, and low lattice thermal conductivity, whereas its high-temperature phase gives rise to superionic conductivity.…”

Section: Introductionmentioning

confidence: 99%

“…[8][9][10] Traditionally, metal tellurides have been synthesized by an elemental reaction at elevated temperatures, typically 500-600 8C, in evacuated tubes, [11] or by the reaction of aqueous metal-salt solutions with a toxic and malodorous gas H 2 Te, [12] or by mechanical alloying from elemental powders. [13] Parkin and co-workers reported a room-temperature route to synthesize Ag and Cu chalcogenides in liquid ammonia. [14] Most of the products Parkin obtained were amorphous and usually crystallized after thermal treatment at 300 8C.…”

Section: Introductionmentioning

confidence: 99%

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Controlled Hydrothermal Synthesis and Growth Mechanism of Various Nanostructured Films of Copper and Silver Tellurides

Zhang

Jia

et al. 2006

Chemistry A European J

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Various nanostructured films of copper and silver tellurides were hydrothermally grown on the corresponding metal substrates through reactions between metal foils and tellurium powder in different media. Interesting morphologies including nanowires, nanorods, nanobelts, nanosheets, and hierarchical dendrites were obtained. The nanostructured films were characterized by using X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and high-resolution TEM (HRTEM). A growth mechanism was proposed based on the characterization results. This study provides a low-temperature, solution-phase approach to grow low-dimensional, nanostructured metal tellurides with controllable morphologies.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Controlled Hydrothermal Synthesis and Growth Mechanism of Various Nanostructured Films of Copper and Silver Tellurides

Zhang

Jia

et al. 2006

Chemistry A European J

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“…1) For example, CuInTe 2 , 2) Pb 1Àx Sn x Te, 3) PbTe 4) and Ag 2 Te 5) have found application in highly efficient solar cells, photo-diode devices, mixed ionic-electronic conductive materials and thermo-element materials, respectively. Copper tellurides [6][7][8][9][10][11][12][13] also exhibit thermoelectronic properties and novel topological clusters, similar to C60 and carbon nanotubes. However, copper tellurides have rarely been the subject of study, and have thusfar been prepared only through dry processes such as sputtering and chemical vapor deposition.…”

Section: Introductionmentioning

confidence: 99%

Electrodeposition of a Copper-Tellurium Compound under Diffusion-Limiting Control

2003

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“…Various consolidating techniques have been used to fabricate bulk thermoelectric nanocomposites, such as spark plasma sintering [370,371], coldpressing [372][373][374], conventional sintering [375], hot-pressing sintering [365,376], and extrusion methods [373]. Cold-pressing is to mechanically compact the nanoparticles, thus leading to nanocomposites with relatively low density and poor mechanical strength.…”

Section: Consolidation Technologiesmentioning

confidence: 99%

Waste Thermal Energy Harvesting (I): Thermoelectric Effect

Kong

Hng

et al. 2014

Waste Energy Harvesting

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Waste thermal energy (heat) is the second type of energy to be discussed. Usually, it is generated in a process by way of fuel combustion or chemical reaction, and then ''dumped'' into the environment even though it could still be reused for some useful and economic purpose. The essential quality of heat is not the amount but rather its ''value.'' The strategy of how to recover this heat depends in part on the temperature of the waste heat gases and the economics involved.Waste thermal energy is one of the largest sources of inexpensive, clean, and fuel-free energy available. The vast amount of heat that is discharged into the atmosphere everyday is one of the best sources of clean, fuel-free, and inexpensive energy. According to the US Department of Energy (DOE), up to 50 % of all fuels burned in the US goes unused into the atmosphere as waste heat is released to the atmosphere. Research indicates that the energy currently wasted by the industrial facilities in the U.S. could produce as much as 20 % of the total US electrical output with the associated 20 % reduction in greenhouse gas emissions. Various sources that can be classified as waste thermal energy (heat) with their properties are listed in Tables 4.1 , 4.2, 4.3, and 4.4 [1].Among the large quantities of waste heat that have been directly discharged into the Earth's environment, much of it is at temperatures which are too low to recover by using the conventional electrical power generators. Thermoelectric power generation, also known as thermoelectricity, has been demonstrated as a promising technology in the direct conversion of low-grade thermal energy, such as waste heat energy into electrical power. Probably, the earliest application is the utilization of waste heat from a kerosene lamp to provide thermoelectric energy to power a wireless device. Thermoelectric generators have also been used to provide small amounts electricity to remote regions, for instance, Northern Sweden, as an L. B. Kong et al., Waste Energy Harvesting, Lecture Notes in Energy 24,

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Synthesis by mechanical alloying and thermoelectric properties of Cu2Te

Cited by 73 publications

References 8 publications

Controlled Hydrothermal Synthesis and Growth Mechanism of Various Nanostructured Films of Copper and Silver Tellurides

Controlled Hydrothermal Synthesis and Growth Mechanism of Various Nanostructured Films of Copper and Silver Tellurides

Electrodeposition of a Copper-Tellurium Compound under Diffusion-Limiting Control

Waste Thermal Energy Harvesting (I): Thermoelectric Effect

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