Exceptionally High Power Factor Ag2Se/Se/Polypyrrole Composite Films for Flexible Thermoelectric Generators

Li, Yating1; Lou, Qing2; Yang, Jianmin2; Cai, Kefeng1; Liu, Ying1; Lu, Yiming1; Qiu, Yang2; Lu, Yao2; Wang, Zixing1; Wu, Miaomiao1; He, Jiaqing2; Shen, Shirley3

2021-11-01

10.1002/adfm.202106902

ADVANCED FUNCTIONAL MATERIALS   影响因子和分区

1616-301X

1616-3028

A facile method to prepare flexible n-type Ag2Se/Se/polypyrrole (PPy) composite films is developed. First, Ag2Se nanostructures (NSs) are wet chemically synthesized; PPy is then in situ polymerized at the surface of the Ag2Se NSs; and finally, the Ag2Se/Se/PPy composite film on a porous nylon membrane is fabricated by a vacuum-assisted filtration process followed by hot pressing. An optimal composite film shows an exceptionally high power factor of approximate to 2240 mu W m(-1) K-2 at 300 K, mainly because of the synergistic effect between well-developed crystalline Ag2Se grains and a small amount of Se and PPy. The film also possesses outstanding flexibility (only about 6.5% decrease in electrical conductivity after 1000 times bending along a rod with a radius of 4 mm). Moreover, a flexible thermoelectric generator composed of six legs of the film outputs a voltage of 21.2 mV and a maximum power of 4.04 mu W (corresponding power density of 37.6 W m(-2)) at a temperature difference of 34.1 K, verifying exceptionally high thermoelectric properties. This work shows the promise of the as-prepared composite film for practical applications in wearable devices and will surely promote the research and development of flexible TE generators.

Ag Se-2 composite films flexible thermoelectric generators polypyrrole thermoelectric

SCI ; EI

英语

NI论文

通讯

National Natural Science Foundation of China[51972234,51632010] ; International Scientific and Technological Innovation Cooperation Project between the Governments of Key National R&D Program of China[2018YFE0111500]

Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics

Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter

WOS:000714623000001

WILEY-V C H VERLAG GMBH

20214511118550

Electric power factor ; Electronic equipment ; Hot pressing ; Microfiltration ; Nanocomposite films ; Polypyrroles ; Selenium compounds ; Silver compounds ; Thermoelectricity

Thermoelectric Energy:615.4 ; Electricity: Basic Concepts and Phenomena:701.1 ; Semiconducting Materials:712.1 ; Chemical Operations:802.3 ; Organic Polymers:815.1.1

MATERIALS SCIENCE

Web of Science

1.Tongji Univ, Sch Mat Sci & Engn, Shanghai Key Lab Dev & Applicat Met Funct Mat, Key Lab Adv Civil Engn Mat,Minist Educ, 4800 Caoan Rd, Shanghai 201804, Peoples R China
2.Southern Univ Sci & Technol, Dept Phys, Shenzhen 518055, Peoples R China
3.CSIRO Mfg, Gate 5,Normanby Rd, Clayton North, Vic 3168, Australia

Li, Yating,Lou, Qing,Yang, Jianmin,et al. Exceptionally High Power Factor Ag2Se/Se/Polypyrrole Composite Films for Flexible Thermoelectric Generators[J]. ADVANCED FUNCTIONAL MATERIALS,2021,32.

Li, Yating.,Lou, Qing.,Yang, Jianmin.,Cai, Kefeng.,Liu, Ying.,...&Shen, Shirley.(2021).Exceptionally High Power Factor Ag2Se/Se/Polypyrrole Composite Films for Flexible Thermoelectric Generators.ADVANCED FUNCTIONAL MATERIALS,32.

Li, Yating,et al."Exceptionally High Power Factor Ag2Se/Se/Polypyrrole Composite Films for Flexible Thermoelectric Generators".ADVANCED FUNCTIONAL MATERIALS 32(2021).