Article
Physics, Applied
Gwansik Kim, Kyungmi Lee, Hyunjun Shin, Jeongmin Kim, Joonyeon Chang, Jong Wook Roh, Wooyoung Lee
Summary: By investigating Cu-doped Bi2Te2.7Se0.3, it was found that Cu atoms preferentially occupied Bi sites and then intercalated into the van der Waals gap. This mechanism allowed for systematic control of the electrical transport properties of the Cu-doped samples, while also reducing the thermal conductivities through enhanced point defect phonon scattering. As a result, the dimensionless thermoelectric figure of merit (ZT) of the Cu-doped sample increased by more than 92%, reaching 0.98 at 323 K.
APPLIED PHYSICS LETTERS
(2022)
Review
Engineering, Electrical & Electronic
Qihao Zhang, Kangfa Deng, Lennart Wilkens, Heiko Reith, Kornelius Nielsch
Summary: This review examines the development of micro-thermoelectric devices, exploring progress in device design, integration, and performance, as well as the potential applications of the technology in cooling, power generation, and sensing. These devices offer faster response time, higher resolution, and greater power density compared to their commercial counterparts, making them crucial for highly integrated electronic devices, the Internet of Things, and flexible and wearable technology.
NATURE ELECTRONICS
(2022)
Article
Materials Science, Ceramics
Hao Zhao, Baoyin Xu, Zhanhui Ding, Yanfeng Xue, Jing Yang, Wei Zhao, Yongfeng Li, Bin Yao, Hongdong Li, Yucheng Lan
Summary: By fabricating porous structures, the thermal conductivity of Bismuth telluride was reduced, leading to improved thermoelectric properties. The study showed that porous (Bi,Sb)2Te3 materials with increased porosity and pore size had significantly lower thermal conductivity. This method of preparing porous thermoelectric materials has potential for enhancing thermoelectric performances.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Lidong Chen, Zhe Guo, Qiang Zhang, Gang Wu, Xiaojian Tan, Yinong Yin, Haoyang Hu, Guo-Qiang Liu, Jun Jiang
Summary: This study successfully improved the thermoelectric properties of p-type Bi2Te3-based materials by adding BN particles, resulting in increased thermopower and maintained high carrier mobilities, leading to a significantly improved power factor. Additionally, the total thermal conductivity was effectively suppressed due to decreased electrical conductivity and the introduction of phonon scattering centers. Moreover, the Vickers hardness and compressive strength of the composite material were also improved.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Article
Chemistry, Multidisciplinary
Savvas Hadjipanteli, Panagiotis S. Ioannou, Theodora Krasia-Christoforou, Theodora Kyratsi
Summary: Organic-based thermoelectric composites show great potential in low-temperature heat-to-electrical energy conversion applications due to their low toxicity, cost-effectiveness, facile synthesis and easy processing. This study focuses on the preparation of polyaniline/bismuth antimony telluride composites via mechanical mixing and investigates the effects of processing parameters and additive content on the thermoelectric performance of the composites. Experimental results reveal that the processing temperature and additive content have significant impacts on the thermoelectric performance of the composites.
APPLIED SCIENCES-BASEL
(2023)
Article
Nanoscience & Nanotechnology
Chul-hee Lee, Peyala Dharmaiah, Dong Hwan Kim, Duck Ki Yoon, Tae Hoon Kim, Sung Ho Song, Soon-Jik Hong
Summary: In this study, economically feasible single-step water atomization (WA) was used to synthesize Cu-doped BST powder, which was then consolidated into large-scale bulk samples using spark plasma sintering (SPS). The incorporation of Cu greatly improved the electrical conductivity and inhibited the bipolar thermal conductivity of BST. The resulting samples showed higher ZT values in the mid-temperature range, making them suitable for the fabrication of industrial thermoelectric modules.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Materials Science, Multidisciplinary
Wenjie Huang, Xiaojian Tan, Jianfeng Cai, Shuai Zhuang, Chuandong Zhou, Jiehua Wu, Guoqiang Liu, Bo Liang, Jun Jiang
Summary: In this study, the thermoelectric performance of zone-melted n-type Bi2Te2.7Se0.3 material is significantly improved by co-doping with BiI3 and SnSb2Te4. BiI3, a non-toxic and non-hygroscopic electron dopant, effectively enhances the power factor and partially suppresses the bipolar effect of n-type Bi2Te2.7Se0.3. SnSb2Te4 doping introduces new scattering centers, resulting in a relatively low lattice thermal conductivity of 0.72 W m(-1) K-1 at 300 K. As a result, a maximum ZT value of 1.30 at 325 K and an average ZT value of 1.00 in the temperature range of 300-500 K are achieved in the Bi2Te2.Se-7(0.3) + 0.15 wt% BiI3 + 0.15 wt% SnSb2Te4 sample. This work provides a feasible approach to effectively improve the thermoelectric performance of n-type zone-melted Bi2Te3.
MATERIALS TODAY PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Amir Pakdel, Atta Ullah Khan, Florent Pawula, Sylvie Hebert, Takao Mori
Summary: This study reports the incorporation of ultra-small Bi nanoparticles into Bi0.5Sb1.5Te3/Sb2O3 nanocomposites and their effects on the thermal and electrical transport properties. It was found that the minute Bi nanoprecipitates increase the charge carrier concentration, act as scattering sites, and shift the maximum Seebeck coefficient values to higher temperatures.
ADVANCED MATERIALS INTERFACES
(2022)
Article
Materials Science, Ceramics
Minsu Kim, Dabin Park, Jooheon Kim
Summary: Carbon cloth was used as a flexible substrate to synthesize bismuth telluride particles with added selenium for improved thermoelectric performance. The maximum power factor reached 1300 mu W/mK(2) for the 30% Se-doped sample, demonstrating the potential of carbon cloth substrate for low temperature range applications.
CERAMICS INTERNATIONAL
(2022)
Article
Green & Sustainable Science & Technology
M. Wehbe, J. Dgheim, E. Sassine
Summary: This article discusses the utilization of thermoelectric effect in cinder blocks to generate electricity in houses, presenting results from numerical simulations and optimization. The study demonstrates the performance of thermoelectric generators (TEG) and suggests enhancements to improve thermoelectric performance.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2022)
Article
Nanoscience & Nanotechnology
Yifeng Tong, Wenjie Huang, Xiaojian Tan, Longbing Yi, Shuai Zhuang, Jiehua Wu, Kun Song, Guoqiang Liu, Genlin Zhang, Jun Jiang
Summary: This study demonstrates the significant improvement in thermoelectric properties of Bi0.5Sb1.5Te3 through the addition of Cu8GeSe6 composite. The composite effectively boosts carrier concentration and limits thermal conductivity, resulting in improved conversion efficiency. The findings hold promising applications in low-grade energy recovery.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Nanoscience & Nanotechnology
Jose F. Serrano-Claumarchirant, Bejan Hamawandi, Adem B. Ergul, Andres Cantarero, Clara M. Gomez, Pankaj Priyadarshi, Neophytos Neophytou, Muhammet S. Toprak
Summary: This study focuses on the development of large-area thermoelectric films using hybrid materials. By blending TE materials with polymers and using a specific solvent, durable polymer, and additive in the ink formulation, the researchers successfully fabricated large-area homogeneous hybrid TE films with improved conductivity and TE power factor.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Yiqun Du, Boya Zhang, Wenyang Zhang, Huixin Jin, Jingyu Qin, Jiaqi Wan, Jianxin Zhang, Guowen Chen
Summary: The construction of heterostructured Bi2Te3/Sb2Te3 nanoflakes enables rapid charge transfer and high capacity in aluminum batteries, improving energy storage performance.
ENERGY STORAGE MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Kaleem Ahmad, Zeyad Almutairi
Summary: Solid solutions based on bismuth telluride are commonly used in industries for thermoelectric applications close to room temperature, but their efficiency is limited. This study focuses on improving the energy conversion efficiency of Bi2Te3 by mixing it with carbon nanotubes, utilizing nanostructuring and quantum confinement effects. The addition of carbon nanotubes enhances the electrical conductivity and Seebeck coefficient, leading to improved power factor and thermal conductivity reduction, resulting in a substantial improvement in the thermoelectric figure of merit of the composite.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Physics, Applied
Adele Leon, Shantanu Misra, Petr Levinsky, Jiri Hejtmanek, Bartlomiej Wiendlocha, Bertrand Lenoir, Christophe Candolfi
Summary: By inserting Pb into Bi2Te2Se, the electronic properties of the material have been successfully transformed from lightly doped n-type to heavily doped p-type, resulting in high power factors and low thermal conductivity values. This favorable combination of thermoelectric properties yields a peak dimensionless figure of merit ZT of 0.70 at 425 K in the direction perpendicular to the pressing direction.
APPLIED PHYSICS LETTERS
(2021)
