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Cellulose Fiber-Based Hierarchical Porous Bismuth Telluride for High-Performance Flexible and Tailorable Thermoelectrics
Jin, Q; Shi, WB; Zhao, Y; Qiao, JX; Qiu, JH; Sun, C; Lei, H; Tai, KP; Jiang, X; Jiang, X (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China.; Lei, H (reprint author), Chinese Acad Sci, Inst Met Res, Surface Engn Mat Div, Shenyang 110016, Liaoning, Peoples R China.; Jiang, X (reprint author), Univ Siegen, Inst Mat Engn, Paul Bonatz Str 9-11, D-57076 Siegen, Germany.
2018-01-17
发表期刊ACS APPLIED MATERIALS & INTERFACES
ISSN1944-8244
卷号10期号:2页码:1743-1751
摘要Porous modification is a general approach to endowing the rigid inorganic thermoelectric (TE) materials with considerable flexibility, however, by which the TE performances are severely sacrificed. Thus, there remains an ongoing struggle against the trade-off between TE properties and flexibility. Herein, we develop a novel strategy to combine Bi2Te3 thick film with ubiquitous cellulose fibers (CFs) via an unbalanced magnetron sputtering technique. Owing to the nano-micro hierarchical porous structures and the excellent resistance to crack propagation of the Bi2Te3/CF architectures, the obtained sample with a nominal Bi2Te3 deposition thickness of tens of micrometers exhibits excellent mechanically reliable flexibility, of which the bending deformation radius could be as small as a few millimeters. Furthermore, the Bi2Te3/CF with rational internal resistance and tailorable shapes and dimensions are successfully fabricated for practical use in TE devices. Enhanced Seebeck coefficients are observed in the Bi2Te3/CF as compared to the dense Bi2Te3 films, and the lattice thermal conductivity is remarkably reduced due to the strong phonon scattering effect. As a result, the TE figure of merit, ZT, is achieved as high as similar to 0.38 at 473 K, which competes with the best flexible TEs and can be further improved by optimizing the carrier concentrations. We believe this developed technique not only opens up a new window to engineer flexible TE materials for practical applications but also promotes the robust development of the fields, such as paper-based flexible electronics and thin-film electronics.; Porous modification is a general approach to endowing the rigid inorganic thermoelectric (TE) materials with considerable flexibility, however, by which the TE performances are severely sacrificed. Thus, there remains an ongoing struggle against the trade-off between TE properties and flexibility. Herein, we develop a novel strategy to combine Bi2Te3 thick film with ubiquitous cellulose fibers (CFs) via an unbalanced magnetron sputtering technique. Owing to the nano-micro hierarchical porous structures and the excellent resistance to crack propagation of the Bi2Te3/CF architectures, the obtained sample with a nominal Bi2Te3 deposition thickness of tens of micrometers exhibits excellent mechanically reliable flexibility, of which the bending deformation radius could be as small as a few millimeters. Furthermore, the Bi2Te3/CF with rational internal resistance and tailorable shapes and dimensions are successfully fabricated for practical use in TE devices. Enhanced Seebeck coefficients are observed in the Bi2Te3/CF as compared to the dense Bi2Te3 films, and the lattice thermal conductivity is remarkably reduced due to the strong phonon scattering effect. As a result, the TE figure of merit, ZT, is achieved as high as similar to 0.38 at 473 K, which competes with the best flexible TEs and can be further improved by optimizing the carrier concentrations. We believe this developed technique not only opens up a new window to engineer flexible TE materials for practical applications but also promotes the robust development of the fields, such as paper-based flexible electronics and thin-film electronics.
部门归属[jin, qun ; zhao, yang ; qiao, jixiang ; qiu, jianhang ; tai, kaiping ; jiang, xin] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, liaoning, peoples r china ; [jin, qun] univ chinese acad sci, shenyang 110016, liaoning, peoples r china ; [shi, wenbo ; zhao, yang ; qiao, jixiang] univ sci & technol china, sch mat sci & engn, shenyang 110016, liaoning, peoples r china ; [shi, wenbo ; sun, chao ; lei, hao] chinese acad sci, inst met res, surface engn mat div, shenyang 110016, liaoning, peoples r china ; [jiang, xin] univ siegen, inst mat engn, paul bonatz str 9-11, d-57076 siegen, germany
关键词Thermal-conductivity Surface Oxidation Crack-propagation Power-factor Devices Film Enhancement Nanotechnology Nanocomposites Thermopower
学科领域Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
资助者National Natural Science Foundation of China [51402310, 51571193]; Chinese Academy of Sciences; Innovation Foundation of Institute of Metal Research
收录类别SCI
语种英语
文献类型期刊论文
条目标识符http://ir.imr.ac.cn/handle/321006/79578
专题中国科学院金属研究所
通讯作者Tai, KP; Jiang, X (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China.; Lei, H (reprint author), Chinese Acad Sci, Inst Met Res, Surface Engn Mat Div, Shenyang 110016, Liaoning, Peoples R China.; Jiang, X (reprint author), Univ Siegen, Inst Mat Engn, Paul Bonatz Str 9-11, D-57076 Siegen, Germany.
推荐引用方式
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Jin, Q,Shi, WB,Zhao, Y,et al. Cellulose Fiber-Based Hierarchical Porous Bismuth Telluride for High-Performance Flexible and Tailorable Thermoelectrics[J]. ACS APPLIED MATERIALS & INTERFACES,2018,10(2):1743-1751.
APA Jin, Q.,Shi, WB.,Zhao, Y.,Qiao, JX.,Qiu, JH.,...&Jiang, X .(2018).Cellulose Fiber-Based Hierarchical Porous Bismuth Telluride for High-Performance Flexible and Tailorable Thermoelectrics.ACS APPLIED MATERIALS & INTERFACES,10(2),1743-1751.
MLA Jin, Q,et al."Cellulose Fiber-Based Hierarchical Porous Bismuth Telluride for High-Performance Flexible and Tailorable Thermoelectrics".ACS APPLIED MATERIALS & INTERFACES 10.2(2018):1743-1751.
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