|
1
|
Xu Y, Wang G, Qian P, Su Y. Element segregation and thermal stability of Ni–Rh nanoparticles. J SOLID STATE CHEM 2022. [DOI: 10.1016/j.jssc.2022.123096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
|
2
|
Wang H, Zheng S, Wu H, Xiong X, Xiong Q, Wang H, Wang Y, Zhang B, Lu X, Han G, Wang G, Zhou X. Realizing Enhanced Thermoelectric Performance and Hardness in Icosahedral Cu 5 FeS 4-x Se x with High-Density Twin Boundaries. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2104592. [PMID: 34741422 DOI: 10.1002/smll.202104592] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Revised: 09/12/2021] [Indexed: 06/13/2023]
Abstract
Bornite (Cu5 FeS4 ) is an Earth-abundant, nontoxic thermoelectric material. Herein, twin engineering and Se alloying are combined in order to further improve its thermoelectric performance. Cu5 FeS4-x Sex (0 ≤ x ≤ 0.4) icosahedral nanoparticles, containing high-density twin boundaries, have been synthesized by a colloidal method. Spark plasma sintering retains twin boundaries in the pellets sintered from Cu5 FeS4-x Sex colloidal powders. Thermoelectric property measurement demonstrates that alloying Se increases the carrier concentration, leading to much-improved power factor in Se-substituted Cu5 FeS4 , for example, 0.84 mW m-1 K-2 at 726 K for Cu5 FeS3.6 Se0.4 ; low lattice thermal conductivity is also achieved, due to intrinsic structural complexity, distorted crystal structure, and existing twin boundaries and point defects. As a result, a maximum zT of 0.75 is attained for Cu5 FeS3.6 Se0.4 at 726 K, which is about 23% higher than that of Cu5 FeS4 and compares favorably to that of reported Cu5 FeS4 -based materials. In addition, the Cu5 FeS4-x Sex samples containing twin boundaries also obtain improved hardness compared to the ones fabricated by melting-annealing or ball milling. This work demonstrates an effective twin engineering-composition tuning strategy toward enhanced thermoelectric and mechanical properties of Cu5 FeS4 -based materials.
Collapse
Affiliation(s)
- Huan Wang
- College of Physics, Chongqing University, Chongqing, 401331, P. R. China
| | - Sikang Zheng
- College of Physics, Chongqing University, Chongqing, 401331, P. R. China
| | - Hong Wu
- College of Physics, Chongqing University, Chongqing, 401331, P. R. China
| | - Xin Xiong
- College of Physics, Chongqing University, Chongqing, 401331, P. R. China
| | - Qihong Xiong
- College of Physics, Chongqing University, Chongqing, 401331, P. R. China
| | - Hengyang Wang
- College of Materials Science and Engineering, Chongqing University, Chongqing, 400044, P. R. China
| | - Yang Wang
- College of Physics, Chongqing University, Chongqing, 401331, P. R. China
| | - Bin Zhang
- Analytical and Testing Center, Chongqing University, Chongqing, 401331, P. R. China
| | - Xu Lu
- College of Physics, Chongqing University, Chongqing, 401331, P. R. China
| | - Guang Han
- College of Materials Science and Engineering, Chongqing University, Chongqing, 400044, P. R. China
| | - Guoyu Wang
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, 400714, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100044, P. R. China
| | - Xiaoyuan Zhou
- College of Physics, Chongqing University, Chongqing, 401331, P. R. China
- Analytical and Testing Center, Chongqing University, Chongqing, 401331, P. R. China
| |
Collapse
|
|
3
|
Saleem F, Zhang Z, Cui X, Gong Y, Chen B, Lai Z, Yun Q, Gu L, Zhang H. Elemental Segregation in Multimetallic Core–Shell Nanoplates. J Am Chem Soc 2019; 141:14496-14500. [DOI: 10.1021/jacs.9b05197] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Faisal Saleem
- Center for Programmable
Materials, School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Zhicheng Zhang
- Center for Programmable
Materials, School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Xiaoya Cui
- Center for Programmable
Materials, School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Yue Gong
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190 China
| | - Bo Chen
- Center for Programmable
Materials, School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Zhuangchai Lai
- Center for Programmable
Materials, School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Qinbai Yun
- Center for Programmable
Materials, School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Lin Gu
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190 China
- School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Hua Zhang
- Center for Programmable
Materials, School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
- Department of Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China
| |
Collapse
|