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High Performance and Flexible Polyvinyl Pyrrolidone/Ag/AgTe Ternary Composite Film for Thermoelectric Power Generator.

08:00 EDT 14th August 2019 | BioPortfolio

Summary of "High Performance and Flexible Polyvinyl Pyrrolidone/Ag/AgTe Ternary Composite Film for Thermoelectric Power Generator."

In this work, polyvinyl pyrrolidone (PVP) coated Ag-rich AgTe nanowires (NWs) were synthesized by a wet chemical method using PVP coated Te NWs as templates, and flexible PVP/Ag/AgTe ternary composite film on nylon membrane was prepared by vacuum assisted filtration followed by heat treatment. TEM and STEM observations of the focused ion beam (FIB) prepared sample reveal that the composite film shows a porous network-like structure and that the Ag and AgTe exist as nanoparticles and NWs, respectively, both bonded with PVP. The Ag nanoparticles are formed by separation of the Ag-rich AgTe NWs during the heat treatment. For the composite film staring from a Ag/Te initial molar ratio of 6:1, a high power factor of 216.5 μW/mK is achieved at 300 K, and it increases to 370.1 μW/mK at 393 K. Bending tests demonstrate excellent flexibility of the hybrid film. A thermoelectric (TE) prototype composed of five-leg of the hybrid film is assembled and the maximum output power of 469 nW is obtained at a temperature gradient of 39.6 K, corresponding to a maximum power density of 341 µW/cm. This work provides an effective route to composite film with high TE performance and excellent flexibility for wearable TE generators.

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This article was published in the following journal.

Name: ACS applied materials & interfaces
ISSN: 1944-8252
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Medical and Biotech [MESH] Definitions

A polyvinyl resin used extensively in the manufacture of plastics, including medical devices, tubing, and other packaging. It is also used as a rubber substitute.

A polymer prepared from polyvinyl acetates by replacement of the acetate groups with hydroxyl groups. It is used as a pharmaceutic aid and ophthalmic lubricant as well as in the manufacture of surface coatings artificial sponges, cosmetics, and other products.

Performance of an act one or more times, with a view to its fixation or improvement; any performance of an act or behavior that leads to learning.

A personality trait characterized by a person's striving for flawlessness and setting excessively high performance standards, accompanied by overly critical self-evaluations and concerns regarding others' evaluations.

Carrying out of specific physical routines or procedures by one who is trained or skilled in physical activity. Performance is influenced by a combination of physiological, psychological, and socio-cultural factors.

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