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Simultaneously optimized thermoelectric and mechanical performance of p-type polycrystalline SnSe enabled by CNTs addition
Liu, Xiaofang1,2; Wang, Hengyang1,2; Chen, Yao1,2; Zhang, Bin1,3; Zhang, Hong1,2; Zheng, Sikang4; Chen, Xianhua1,2; Lu, Xu4; Wang, Guoyu5; Zhou, Xiaoyuan2,3,4
2022-09-01
摘要A series of SnSe/carbon nanotubes (SnSe/CNTs) composites, with homogeneous distribution of CNTs, were fabricated by combining solution synthesis with fast sintering. Enabled by CNTs addition, both the electrical conductivity and power factor are improved significantly; the lattice thermal conductivity is suppressed due to strengthened phonon scattering. As a result, a maximum zT of 0.90 is obtained in the SnSe/CNTs composite with 0.20 wt.% CNTs, - 90% higher than that of SnSe. In addition, the composite with 0.35 wt.% CNTs exhibits a dramatically increased compressive strength of 135 MPa, representing an - 81% increase. This work offers a composite design strategy for synergistically improving both thermoelectric and mechanical properties of polycrystalline SnSe.
关键词Thermoelectric Mechanical property SnSe Carbon nanotubes Solution synthesis ? tot
DOI10.1016/j.scriptamat.2022.114846
发表期刊SCRIPTA MATERIALIA
ISSN1359-6462
卷号218页码:5
通讯作者Zhang, Bin() ; Han, Guang()
收录类别SCI
WOS记录号WOS:000833888500003
语种英语