期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 56, 期 13, 页码 3546-3551出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201612041
关键词
hollow nanostructures; Kirkendall effect; porous nanocomposites; thermal conductivity; thermoelectric materials
资金
- Office of Naval Research [N00014-16-1-2066]
- Defense Advanced Research Projects Agency (DARPA) [HR0011-15-2-0037]
- Solid-State Solar-Thermal Energy Conversion Centre (S3TEC)
- Energy Frontier Research Centre - U.S. Department of Energy, Office of Science, Basic Energy Sciences [DE-SC0001299]
- Materials Sciences Division of the Office of Basic Energy Sciences of the U.S. Department of Energy [DE-AC02-07CH11358]
To enhance the performance of thermoelectric materials and enable access to their widespread applications, it is beneficial yet challenging to synthesize hollow nanostructures in large quantities, with high porosity, low thermal conductivity (kappa) and excellent figure of merit (z T). Herein we report a scalable (ca. 11.0 g per batch) and low-temperature colloidal processing route for Bi2Te2.5Se0.5 hollow nanostructures. They are sintered into porous, bulk nanocomposites (phi 10 mm x h 10 mm) with low kappa (0.48 W m(-1) K-1) and the highest zT (1.18) among state-of-the-art Bi2Te3-xSex materilas. Additional benefits of the unprecedented low relative density (68-77%) are the large demand reduction of raw materials and the improved portability. This method can be adopted to fabricate other porous phase-transition and thermoelectric chalcogenide materials and will pave the way for the implementation of hollow nanostructures in other fields.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据