| Citation: |
Yuxin Huang, Liangwei Fu, Biao Xu. Single-atom thermoelectric materials: a new opportunity[J]. Materials Lab, 2023, 2(2): 220059. doi: 10.54227/mlab.20220059
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Single-atom thermoelectric materials: a new opportunity
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Abstract
Single-atom materials show great potential in the field of thermoelectrics due to their distinguishing features such as maximum atom utilization efficiency, unique electronic structure, guest−host interactions, and a tunable coordination environment. Herein, the concept of single-atom thermoelectric materials is presented. Thereafter, we introduce characterization techniques including high-angle annular dark field scanning transmission electron microscopy (HAADF-STEM) and X-ray absorption fine structure spectroscopy (XAFS) for identifying the specific coordination environment of single atoms. Furthermore, a typical work demonstrating the effect of single atoms on the thermoelectric transport properties of Bi2S3 is provided. Finally, we propose possible future development paths for single-atom thermoelectric materials. This paper provides a reference for further studies of single-atom thermoelectric materials.
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Keywords:
- Single-atom /
- thermoelectric /
- materials /
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- bismuth /
- sulfide /
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- HAADF-STEM /
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- XAFS /
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- solvothermal /
/ - synthesis
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Author Biographies
Yuxin Huang is now a postgraduate student under the supervision of Prof. Biao Xu at Nanjing University of Science and Technology, China. He received his B.S. degree at the School of Chemical Engineering and Materials from Quanzhou Normal University, China, in 2022. His current research focuses on thermoelectric materials and devices. 
Liangwei Fu is an associate professor of the School of Chemistry and Chemical Engineering at Nanjing University of Science and Technology, China. He received his Ph.D. degree from Huazhong University of Science and Technology in 2015. Afterward, he worked as a postdoctoral fellow at Southern University of Science and Technology, Shenzhen (2016-2018) and Sungkyunkwan University, Korea (2018-2021). He joined Prof. Xu Biao's group in 2021. His research areas are developing of new high-performance nanocomposite thermoelectric materials and revealing the electrical and thermal transport mechanism of thermoelectric materials. 
Biao Xu is a young professor of the School of Chemistry and Chemical Engineering at Nanjing University of Science and Technology, China. He received his B.S. degree in 2009 and Ph.D. degree in 2014 from Tsinghua University. Afterward, he worked as a postdoctoral fellow in Department of Chemical Engineering at Iowa State University, USA (2014-2017). His research areas are nanophase synthesis, performance and application studies of thermoelectric materials and devices. -
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Yuxin Huang, Liangwei Fu, Biao Xu. Single-atom thermoelectric materials: a new opportunity[J]. Materials Lab, 2023, 2(2): 220059. doi: 10.54227/mlab.20220059
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Figure 1.
a The HAADF-STEM image of Bi2S3−0.5 wt % Pt1 and its crystal structure, SAED, EDS elemental mapping analysis. In the relative elemental analysis, the green, yellow, and red colors are representing Bi, S, and Pt elements, respectively. b Corresponding FT-EXAFS curves and their fitting lines. c Wavelet transform (WT) plots of Bi2S3−Pt1 samples, PtS2, Bi2S3−Ptn samples and Pt foil standard. d XPS of Pt 4f spectra for Bi2S3−Pt1, Bi2S3−Ptn samples[18]. Copyright 2022, American Chemical Society.
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Figure 2.
a The lattice thermal conductivity and correspondingly simulated results. b The ZT value of Bi2S3 substrate and Bi2S3−Pt samples[18]. Copyright 2022, American Chemical Society.
