Abstract
Though solar cells are one of the promising technologies to address the energy crisis, this technology is still far from commercialization. Thermoelectric materials offer a novel opportunity to convert energy between thermal and electrical aspects, which show the feasibility to improve the performance of solar cells via heat management and light harvesting. Polymer–inorganic thermoelectric nanocomposites consisting of inorganic nanomaterials and functional organic polymers represent one kind of advanced hybrid nanomaterials with tunable optical and electrical characteristics and fascinating interfacial and surface chemistry. During the past decades, they have attracted extensive research interest due to their diverse composition, easy synthesis, and large surface area. Such advanced nanomaterials not only inherit low thermal conductivity from polymers and high Seebeck coefficient, and high electrical conductivity from inorganic materials, but also benefit from the additional interface between each component. In this review, we provide an overview of interfacial chemistry engineering and electrical feature of various polymer–inorganic thermoelectric hybrid nanomaterials, including synthetic methods, properties, and applications in thermoelectric devices. In addition, the prospect and challenges of polymer–inorganic nanocomposites are discussed in the field of thermoelectric energy.
Highlights
Thermoelectric materials represent a functional material capable of direct mutual conversion between heat and electricity
The corresponding thermoelectric performance is defined as thermoelectric figure of merit ZT
In order to obtain a large value of ZT
Summary
Thermoelectric materials represent a functional material capable of direct mutual conversion between heat and electricity. They inherit the advantageous characteristics from each component such as high σ and S of inorganic materials, and low κ of polymeric materials, but they possess novel interfacial chemistry Their morphology, electrical features, and interfacial and surface chemistry play a vital role in the related application, which can be rationally designed via the well-established synthetic approaches. Due to these outstanding characteristics, polymer–inorganic nanomaterials can promote the value of ZT with enhanced compatibility, which leads to superior activity and stability in thermoelectric devices. The challenges of polymer–inorganic nanomaterials in thermoelectric devices will be discussed in depth
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