Abstract
In this report, copper iron sulfide nanoparticles with various composition were synthesized by a thermolysis based wet chemical method. These inherently sustainable nanoparticles were then fully characterized in terms of composition, structure, and morphology, as well as for suitability as a thermoelectric material. The merits of the material preparation include a straightforward bulk material formation where particles do not require any specialized treatment, such as spark plasma sintering or thermal heating. The Seebeck coefficient of the materials reveals P-type conductivity with a maximum value of 203 µV/K. The results give insight into how to design and create a new class of sustainable nanoparticle material for thermoelectric applications.
Highlights
In the field of energy materials, nanotechnology has already found many uses
The clumpy material itself may be sheets of nanoparticle material, which would be consistent with the morphology observed for the parent copper sulfide nanoparticle material [20,21]
We found that sample A possesses a Seebeck coefficient of 22 ± 1 μV/K, which is consistent with the reference value for closely related bulk materials such as digenite (Cu1.8S)
Summary
In the field of energy materials, nanotechnology has already found many uses. Nanotechnology has been used in thermoelectric materials, which have the Nanomaterials 2015, 5 potential to greatly enhance our current energy production efficiency. Thermoelectric materials rely on the Seebeck and Peltier effects to convert an electric current to a heat gradient, or vice versa. By utilizing these phenomena, thermoelectric materials can be used to generate electricity from nearly any heat source, for example an automobile engine, in steam turbine electricity generation, or even direct geothermal energy. Thermoelectric materials have not found widespread use because of their inherently low energy conversion efficiency, described by the dimensionless figure of merit, ZT
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