High-performance lead-free cubic GeTe-based thermoelectric alloy
文献类型：期刊论文
| 作者 | Liu, Ming1; Zhu, Jianbo1,2; Cui, Bo3; Guo, Fengkai1; Liu, Zihang1; Zhu, Yuke1; Guo, Muchun1; Sun, Yuxin1; Zhang, Qian4; Zhang, Yongsheng2 |
| 刊名 | CELL REPORTS PHYSICAL SCIENCE
 |
| 出版日期 | 2022-06-15 |
| 卷号 | 3 |
| DOI | 10.1016/j.xcrp.2022.100902 |
| 通讯作者 | Guo, Fengkai(fkguo@hit.edu.cn) ; Zhang, Yongsheng(yshzhang@theory.issp.ac.cn) ; Sui, Jiehe(suijiehe@hit.edu.cn) |
| 英文摘要 | The ferroelectric phase transition of GeTe thermoelectric materials caused by the 4s(2) lone-pair electrons of Ge2+ leads to the sudden change of thermal expansion coefficient, which severely restrains its practical applications. Herein, we demonstrate a successful way to suppress the ferroelectric phase-transition temperature down to below room temperature in GeTe. Our approach involves LiSbTe2 alloying, where the charge distribution is manipulated to reduce the influence of the stereochemical activity of the cation lone-pair electrons on the crystal structure. LiSbTe2 alloying can also promote multi-band convergence and enhance phonon scattering. Consequently, a superior ZT(ave) of 1.38 within 300-773 K is achieved in cubic (GeTe)(0.70)(LiSbTe2)(0.30) alloys, which is significantly higher than the reported results for room temperature or near-room temperature cubic GeTe systems so far. Moreover, the calculated conversion efficiency of 17% is also the highest among all nontoxic p-type polycrystalline thermoelectric materials. This work takes a solid step forward in the application of GeTe. |
| WOS关键词 | THERMAL-CONDUCTIVITY ; BAND CONVERGENCE ; POWER ; EFFICIENCY ; SUPPRESSION ; CONVERSION ; MODULES ; FIGURE ; MERIT |
| 资助项目 | National Natural Science Foundation of China[52130106] ; National Natural Science Foundation of China[52101247] ; National Natural Science Foundation of China[51871082] ; National Natural Science Foundation of China[11774347] ; Fundamental Research Funds for the Central Universities[HIT.OCEF.2021014] ; Heilongjiang Touyan Team |
| WOS研究方向 | Chemistry ; Energy & Fuels ; Materials Science ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000881723800007 |
| 出版者 | ELSEVIER |
| 资助机构 | National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Heilongjiang Touyan Team |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/130166]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Guo, Fengkai; Zhang, Yongsheng; Sui, Jiehe |
| 作者单位 | 1.Harbin Inst Technol, State Key Lab Adv Welding & Joining, Harbin 150001, Peoples R China 2.Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Peoples R China 3.China Acad Engn Phys, Inst Nucl Phys & Chem, Mianyang 621900, Peoples R China 4.Harbin Inst Technol, Inst Mat Genome & Big Data, Sch Mat Sci & Engn, Shenzhen 518055, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Ming,Zhu, Jianbo,Cui, Bo,et al. High-performance lead-free cubic GeTe-based thermoelectric alloy[J]. CELL REPORTS PHYSICAL SCIENCE,2022,3. |
| APA | Liu, Ming.,Zhu, Jianbo.,Cui, Bo.,Guo, Fengkai.,Liu, Zihang.,...&Sui, Jiehe.(2022).High-performance lead-free cubic GeTe-based thermoelectric alloy.CELL REPORTS PHYSICAL SCIENCE,3. |
| MLA | Liu, Ming,et al."High-performance lead-free cubic GeTe-based thermoelectric alloy".CELL REPORTS PHYSICAL SCIENCE 3(2022). |
入库方式： OAI收割
来源：合肥物质科学研究院
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