期刊
MATERIALS
卷 15, 期 5, 页码 -出版社
MDPI
DOI: 10.3390/ma15051924
关键词
carbon nanotubes; ZnO nanowires; thermoelectric properties
类别
资金
- National Centre for Research and Development, Poland [LIDER/0001/L-8/16/NCBR/2017]
- National Agency for Academic Exchange of Poland [PPI/APM/2018/1/0004]
Carbon nanotubes (CNTs) have unique properties that make them ideal for thermogenerators. By molecular doping and adding ZnO nanowires, the performance of CNT thermogenerators can be greatly enhanced, increasing their application potential.
Carbon nanotubes (CNTs) have a wide range of unique properties, which have kept them at the forefront of research in recent decades. Due to their electrical and thermal characteristics, they are often evaluated as key components of thermogenerators. One can create thermogenerators exclusively from CNTs, without any metal counterpart, by properly selecting dopants to obtain n- and p-doped CNTs. However, the performance of CNT thermogenerators remains insufficient to reach wide commercial implementation. This study shows that molecular doping and the inclusion of ZnO nanowires (NWs) can greatly increase their application potential. Moreover, prototype modules, based on single-walled CNTs (SWCNTs), ZnO NWs, polyethyleneimine, and triazole, reveal notable capabilities for generating electrical energy, while ensuring fully scalable performance. Upon doping and the addition of ZnO nanowires, the electrical conductivity of pure SWCNTs (211 S/cm) was increased by a factor of three. Moreover, the proposed strategy enhanced the Power Factor values from 18.99 (unmodified SWCNTs) to 34.9 and 42.91 mu W/m center dot K-2 for CNTs triazole and polyethyleneimine + ZnO NWs inclusion, respectively.
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