Knowledge Management System of Hefei Institute of Physical Science，CAS
| Achieving High Thermoelectric Performance in p-Type BST/PbSe Nanocomposites through the Scattering Engineering Strategy | |
Jiang, Zhongsheng1,2; Ming, Hongwei1,2; Qin, Xiaoying1 ; Feng, Dan3,4; Zhang, Jian1; Song, Chunjun1; Li, Di1; Xin, Hongxing1; Li, Juncai1,2; He, Jiaqing3
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| 2020-10-14 | |
| Source Publication | ACS APPLIED MATERIALS & INTERFACES
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| ISSN | 1944-8244 |
| Corresponding Author | Qin, Xiaoying(xyqin@issp.ac.cn) |
| Abstract | To achieve high thermoelectric conversion efficiency in Bi0.4Sb1.6Te3 (BST) alloy is vital for its applications in low-grade energy harvesting. Here, we show that 56% increase in the power factor (PF) (from 16 to 25 mu W cm(-1) K-2) and 32% reduction of lattice thermal conductivity kappa(L )(from 0.56 to 0.38 W m(-1) K-1) as well as an approximately four-fold decrease in bipolar-effect contribution kappa(b) (from 0.48 to 0.12 W m(-1) K-1) can be achieved at 512 K through the incorporation of 0.2 vol % PbSe nanoparticles in the BST matrix. Analyses indicate that the remarkable increase in PF for the composite samples can be mainly attributed to strong electron scattering at the large interface barriers, inhibiting effectively the electron contribution to the total thermopower at elevated temperatures, while the large drop of kappa(L) and kappa(b) originates from enhanced phonon scattering by PbSe nanoinclusions as well as phase boundaries (among BST and PbSe nanophase) and suppression of electron transport, respectively. As a result, a maximum figure of merit (ZT) of 1.56 (at 400 K) and an average ZT (ZT(ave)) of 1.44 in the temperature range of 300-512 K are reached. Correspondingly, a record projected conversion efficiency eta = 11% is achieved at the cold side 300 K and hot side 512 K in the BST-based composite incorporated with 0.2 vol % PbSe nanoinclusions. |
| Keyword | thermoelectric materials BST carrier-scattering engineering conversion efficiency Debye-Callaway model |
| DOI | 10.1021/acsami.0c13542 |
| WOS Keyword | BISMUTH-ANTIMONY TELLURIDE ; FIGURE ; ENHANCEMENT ; COMPOSITES ; MERIT ; POWER ; PBTE |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | Natural Science Foundation of China[11674322] ; Natural Science Foundation of China[51672278] ; Natural Science Foundation of China[51972307] ; Leading Talents of Guangdong Province Program[00201517] |
| Funding Organization | Natural Science Foundation of China ; Leading Talents of Guangdong Province Program |
| WOS Research Area | Science & Technology - Other Topics ; Materials Science |
| WOS Subject | Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary |
| WOS ID | WOS:000582345700046 |
| Publisher | AMER CHEMICAL SOC |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.hfcas.ac.cn:8080/handle/334002/104843 |
| Collection | 中国科学院合肥物质科学研究院 |
| Corresponding Author | Qin, Xiaoying |
| Affiliation | 1.Chinese Acad Sci, Inst Solid State Phys, Key Lab Photovolta & Energy Conservat Mat, HFIPS, Hefei 230031, Peoples R China 2.Univ Sci & Technol China, Hefei 230026, Peoples R China 3.South Univ Sci & Technol China, Shenzhen 518055, Peoples R China 4.Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China |
| Recommended Citation GB/T 7714 | Jiang, Zhongsheng,Ming, Hongwei,Qin, Xiaoying,et al. Achieving High Thermoelectric Performance in p-Type BST/PbSe Nanocomposites through the Scattering Engineering Strategy[J]. ACS APPLIED MATERIALS & INTERFACES,2020,12. |
| APA | Jiang, Zhongsheng.,Ming, Hongwei.,Qin, Xiaoying.,Feng, Dan.,Zhang, Jian.,...&He, Jiaqing.(2020).Achieving High Thermoelectric Performance in p-Type BST/PbSe Nanocomposites through the Scattering Engineering Strategy.ACS APPLIED MATERIALS & INTERFACES,12. |
| MLA | Jiang, Zhongsheng,et al."Achieving High Thermoelectric Performance in p-Type BST/PbSe Nanocomposites through the Scattering Engineering Strategy".ACS APPLIED MATERIALS & INTERFACES 12(2020). |
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