N-Type Flexible Films and a Thermoelectric Generator of Single-Walled Carbon Nanotube-Grafted Tin Selenide Nanocrystal Composites

Author(s):  
Jueshuo Fan ◽  
Xiaodong Wang ◽  
Fusheng Liu ◽  
Zhijun Chen ◽  
Guangming Chen
2016 ◽  
Vol 4 (37) ◽  
pp. 14187-14193 ◽  
Author(s):  
Guangbao Wu ◽  
Caiyan Gao ◽  
Guangming Chen ◽  
Xin Wang ◽  
Hanfu Wang

A new strategy to realize p- to n-type conversion of a SWCNT is proposed by diethylenetriamine doping and subsequent CaH2 reduction. The module with a multilayered stacked structure reveals excellent thermoelectric performance.


2020 ◽  
Vol 4 (1) ◽  
Author(s):  
Yichuan Zhang ◽  
Liang Deng ◽  
Haicai Lv ◽  
Guangming Chen

Abstract Polymer thermoelectric (TE) composites have witnessed explosive developments in recent years, arising from their promising prospect for lightweight flexible electronics and capability of harvesting waste-heat. In sharp contrast with intrinsically conducting polymers (CPs), the insulating thermoplastics have seldom been employed as the matrices for flexible TE composites despite their advantages of low costs, controllable melt-flowing behaviors and excellent mechanical properties. Here, we report flexible films of polycarbonate/single-walled carbon nanotube (PC/SWCNT) composites with improved trade-off between TE and mechanical performances. The SWCNTs with 1D nanostructure were dramatically aligned by PC melt-flowing under hot-pressing in the radial direction. The composite maximum power factor reaches 4.8 ± 0.8 μW m−1 K−2 at 10 wt% SWCNTs in the aligned direction, which is higher than most previously reported thermoplastics-based TE composites at the same SWCNT loading and even comparable to some intrinsically CPs and their composites. In addition, these composites display significantly higher tensile modulus and strength than CPs and their composites. This study paves an effective way to fabricate flexible films of polymer composites with simultaneously high TE and mechanical performances via judicious alignment of SWCNTs in thermoplastic polymers.


MRS Advances ◽  
2019 ◽  
Vol 4 (3-4) ◽  
pp. 147-153 ◽  
Author(s):  
Masatoshi Ishimaru ◽  
Akihito Kubo ◽  
Tsuyoshi Kawai ◽  
Yoshiyuki Nonoguchi

ABSTRACTThe upcoming IoT society requires portable energy harvesters including thermoelectric generators around room temperature. Here we show a prototype, lightweight thermoelectric generator based on doped single-walled carbon nanotubes. The generator is fabricated by the standard printing and cut-and-paste techniques. The 12 cm-scale generator with a commercial DC-DC converter exhibits thermoelectric outputs high enough to drive small devices such as a light-emitting diode (LED). We believe such demonstration facilitates the studies not only of further improvements in the thermoelectric properties of carbon nanotube materials but also of the novel design for thermoelectric generators on the basis of thermal engineering.


AIP Advances ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 045306
Author(s):  
Georg Daniel Förster ◽  
Thomas D. Swinburne ◽  
Hua Jiang ◽  
Esko Kauppinen ◽  
Christophe Bichara

2021 ◽  
Vol 129 (1) ◽  
pp. 014309
Author(s):  
Kasidet Jing Trerayapiwat ◽  
Sven Lohmann ◽  
Xuedan Ma ◽  
Sahar Sharifzadeh

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