High-performance flexible thermoelectric generator by control of electronic structure of directly spun carbon nanotube webs with various molecular dopants

Abstract

Thermally treated carbon nanotube webs for effective n-type doping are used for a flexible thermoelectric generator with a high power output.

Preparation of Highly Stable Black Phosphorus by Gold Decoration for High‐Performance Thermoelectric Generators

“…Interestingly, the decrease in the Seebeck coefficient with increase in the Au NP content is relatively small as compared to the increase in electrical conductivity. Such increased electrical conductivity, alongside limited reduction of the Seebeck coefficient by the introduction of the energy barrier provided by its heterojunction architecture, leads to a dramatically increased power factor for the Au‐decorated BP. Consequently, the power factor of the Au‐decorated BP efficiently increases from 0.025 to 68.5 µV m −1 K −2 at the optimized Au NP‐to‐BP molar ratio of 0.06 (Figure b).…”

Chloride transport in conductive polymer films for an n-type thermoelectric platform

“…Various types of hybrid composites made of organic and inorganic TE materials have been reported since the metal coordination n-type polymer poly[K x (Ni-ett)] having PF of 66 mW m À1 K À2 was reported. 17 Some examples include hybrids of single-walled carbon nanotubes (CNTs) and PEDOT:FeCl 4 treated by tetrakis-(dimethylamino)ethylene (PF of B1050 mW m À1 K À2 ), 18 poly(Ni-ett) film (PF of B360 mW m À1 K À2 ), 19 benzyl viologendoped CNT webs (PF of 3.1 mW m À1 K À2 ), 20 and the hybrid superlattices of TiS 2 /[(hexylammonium) x (H 2 O) y (DMSO)] (PF of 450 mW m À1 K À2 ). 21 However, few of them are stable under ambient conditions, 22 limiting their practical application.…”

“…21 However, few of them are stable under ambient conditions, 22 limiting their practical application. In addition, most of the conductive inorganic or carbon materials have high thermal conductivity (k), 20 which results in a low TE figure of merit, ZT = PF Â T/k, where T is the absolute temperature of the material. Therefore, in order to realize an efficient TE generator, n-type ionic TE materials could be an alternative.…”

Enhanced figure of merit of poly(9,9‐di‐n‐octylfluorene‐alt‐benzothiadiazole) and SWCNT thermoelectric composites by doping with FeCl3

“…In general, thermoelectric materials can be divided into two types: organic thermoelectric materials and inorganic thermoelectric materials. It has been several decades since the development of inorganic thermoelectrics, and several inorganic thermoelectric materials have been applied to new batteries, refrigeration devices, microsensors, and so forth . However, inorganic thermoelectric materials have several drawbacks, such as high cost, toxicity, complicated manufacture process, and rare resources, which hinder their wide applications .…”