Solution-Based Synthesis and Processing of Metal Chalcogenides for Thermoelectric Applications

Shah, Kwok Wei; Wang, Suxi; Zheng, Yun; Xu, Jianwei

doi:10.3390/app9071511

Cited by 15 publications

(9 citation statements)

References 133 publications

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“…The observed maximum values of the surface and the volume power density are 1.7 μW cm –2 and 4.9 μW cm –3 at 70 °C, respectively. The power-output characteristics are comparable to literature estimates for materials such as Te/polymer composites, expensive polymers such as poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS), TiS 2 , CuSe, and other metal chalcogenide based devices, indicating that Cu 2 S could serve as a potentially competitive basis for thermoelectric devices. − Also, as the new type of flexible thermoelectric devices are becoming more popular, − Cu x S can be utilized to replace expensive compounds in combination with polymer/organic compounds …”

Section: Results and Discussionsupporting

confidence: 66%

Economical and Facile Route to Produce Gram-Scale and Phase-Selective Copper Sulfides for Thermoelectric Applications

Mulla

Jones

Dunnill

2020

ACS Sustainable Chem. Eng.

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Producing thermoelectric materials without energy-intensive processes is essential to reduce the production costs and for wide-scale applications. Copper sulfides have recently been identified as new and promising environmentally friendly thermoelectric materials. Here, an economical synthetic route for the gram-scale preparation of copper sulfide is developed that enables selective control of the copper oxidation state, in turn allowing the stoichiometry to be tuned to optimize the thermoelectric characteristics of the product. Through this facile and scalable protocol, CuS, Cu 1.75 S, Cu 1.80 S, and Cu 2 S powders have been synthesized in conjunction with X-ray diffraction, X-ray photoelectron spectroscopy, and energy-dispersive X-ray spectroscopy to verify the stoichiometry of each material. The as-prepared compounds were further characterized by thermoelectric measurements and the performance of a test generator module containing ten p-type Cu 2 S legs was subsequently investigated. Upon heating one side of the module to 70 °C, the device produced an output voltage of 30.9 mV and a corresponding power output of 3.4 μW, which is comparable to the power outputs of many of devices fabricated with expensive and toxic thermoelectric elements. This work presents a novel pathway for the development of low-cost thermoelectric devices by introducing a facile, tunable, and high-yield Cu x S synthesis procedure that may be readily adapted to other metal sulfides.

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Section: Results and Discussionsupporting

confidence: 66%

Economical and Facile Route to Produce Gram-Scale and Phase-Selective Copper Sulfides for Thermoelectric Applications

Mulla

Jones

Dunnill

2020

ACS Sustainable Chem. Eng.

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“…In addition to powder metallurgy methods, solution-based synthesis has shown great potential in grain boundary engineering for TE materials. 97,248,249 Solution-based routes have several advantages over solid-state synthesis, in particular low reaction temperature and facile control of microstructures. Numerous metal chalcogenide nanocrystals have been synthesized in solution, including PbTe, Cu2Se, SnSe, and Bi2Te3based compounds.…”

Section: Planar Defectsmentioning

confidence: 99%

Defect engineering in thermoelectric materials: what have we learned?

et al. 2021

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“…To alter the speed of nucleation and the formation of the products, the kinetic and thermodynamic parameters can also be easily tuned. [303] The nanoparticle shape is determined by the crystal structure of the material and the free energy of each facet.…”

Section: Solution Chemical Synthesismentioning

confidence: 99%

Energy‐Saving Pathways for Thermoelectric Nanomaterial Synthesis: Hydrothermal/Solvothermal, Microwave‐Assisted, Solution‐Based, and Powder Processing

2022

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The pillars of Green Chemistry necessitate the development of new chemical methodologies and processes that can benefit chemical synthesis in terms of energy efficiency, conservation of resources, product selectivity, operational simplicity and, crucially, health, safety, and environmental impact. Implementation of green principles whenever possible can spur the growth of benign scientific technologies by considering environmental, economical, and societal sustainability in parallel. These principles seem especially important in the context of the manufacture of materials for sustainable energy and environmental applications. In this review, the production of energy conversion materials is taken as an exemplar, by examining the recent growth in the energy-efficient synthesis of thermoelectric nanomaterials for use in devices for thermal energy harvesting. Specifically, "soft chemistry" techniques such as solution-based, solvothermal, microwave-assisted, and mechanochemical (ball-milling) methods as viable and sustainable alternatives to processes performed at high temperature and/or pressure are focused. How some of these new approaches are also considered to thermoelectric materials fabrication can influence the properties and performance of the nanomaterials so-produced and the prospects of developing such techniques further.

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Solution-Based Synthesis and Processing of Metal Chalcogenides for Thermoelectric Applications

Cited by 15 publications

References 133 publications

Economical and Facile Route to Produce Gram-Scale and Phase-Selective Copper Sulfides for Thermoelectric Applications

Economical and Facile Route to Produce Gram-Scale and Phase-Selective Copper Sulfides for Thermoelectric Applications

Defect engineering in thermoelectric materials: what have we learned?

Energy‐Saving Pathways for Thermoelectric Nanomaterial Synthesis: Hydrothermal/Solvothermal, Microwave‐Assisted, Solution‐Based, and Powder Processing

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