Achieving High Thermoelectric Performance of n-Type Bi2Te2.79Se0.21 Sintered Materials by Hot-Stacked Deformation
文献类型：期刊论文
| 作者 | Xiong, Chenglong; Shi, Fanfan; Wang, Hongxiang; Cai, Jianfeng; Zhao, Simao; Tan, Xiaojian; Hu, Haoyang; Liu, Guoqiang; Noudem, Jacques G.; Jiang, Jun |
| 刊名 | ACS APPLIED MATERIALS & INTERFACES
 |
| 出版日期 | 2021 |
| 卷号 | 13期号:13页码:15429-15436 |
| 关键词 | FIGURE MERIT POWER ALLOYS CONDUCTIVITY EFFICIENCY ZT |
| 英文摘要 | Bismuth telluride has been the only commercial thermoelectric candidate, but the n-type sintered material lags well behind the p-type one in the zT value, which severely limits the further development of thermoelectrics. Here, we report a promising technique named hot-stacked deformation to effectively improve the thermoelectric properties of n-type Bi2Te2.79Se0.21 + 0.067 wt % BiCl3 materials based on zone-melting ingots. It is found that a high grain alignment is maintained during the plastic deformation and the carrier concentration is properly optimized owing to the donor-like effect, leading to an enhanced power factor. Moreover, the lattice thermal conductivity is obviously suppressed due to the emerged phonon scattering centers of dense grain boundaries and dislocations. These effects synergistically yield a maximum zT value of 1.38 and an average zT(ave) of 1.18 between 300 and 500 K in the hot-stacked deformed sample, which is approximately 42% higher than those of the zone-melting ingots. |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/22035]  |
| 专题 | 中国科学院宁波材料技术与工程研究所 2021专题_期刊论文 |
| 作者单位 | 1.Jiang, J (corresponding author), Univ Chinese Acad Sci, Beijing 101408, Peoples R China. 2.Jiang, J (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Peoples R China. 3.Tan, XJ |
| 推荐引用方式 GB/T 7714 | Xiong, Chenglong,Shi, Fanfan,Wang, Hongxiang,et al. Achieving High Thermoelectric Performance of n-Type Bi2Te2.79Se0.21 Sintered Materials by Hot-Stacked Deformation[J]. ACS APPLIED MATERIALS & INTERFACES,2021,13(13):15429-15436. |
| APA | Xiong, Chenglong.,Shi, Fanfan.,Wang, Hongxiang.,Cai, Jianfeng.,Zhao, Simao.,...&Jiang, Jun.(2021).Achieving High Thermoelectric Performance of n-Type Bi2Te2.79Se0.21 Sintered Materials by Hot-Stacked Deformation.ACS APPLIED MATERIALS & INTERFACES,13(13),15429-15436. |
| MLA | Xiong, Chenglong,et al."Achieving High Thermoelectric Performance of n-Type Bi2Te2.79Se0.21 Sintered Materials by Hot-Stacked Deformation".ACS APPLIED MATERIALS & INTERFACES 13.13(2021):15429-15436. |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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