Printed flexible thermoelectric materials and devices

2021 ◽  
Author(s):  
Jiaqing Zang ◽  
Jiayi Chen ◽  
Zhewei Chen ◽  
Ya Li ◽  
Jiye Zhang ◽  
...  
Keyword(s):  
Solid State ◽  
Thermoelectric Materials ◽  
Rapid Development ◽  
Low Grade ◽  
Application Potential ◽  
Low Grade Heat ◽  
Flexible Thermoelectric ◽  
Solid State Cooling

The innate capability of direct heat-electricity conversion endows thermoelectric (TE) materials great application potential in the fields of low-grade heat harvesting, solid-state cooling, and sensing. Recently, the rapid development of...

High‐Performance Flexible Thermoelectric Devices Based on All‐Inorganic Hybrid Films for Harvesting Low‐Grade Heat

2019 ◽  
Vol 29 (25) ◽  
pp. 1900304 ◽  
Author(s):  
Bo Wu ◽  
Yang Guo ◽  
Chengyi Hou ◽  
Qinghong Zhang ◽  
Yaogang Li ◽  
...  
Keyword(s):  
High Performance ◽  
Low Grade ◽  
Hybrid Films ◽  
Thermoelectric Devices ◽  
Inorganic Hybrid ◽  
Low Grade Heat ◽  
Flexible Thermoelectric

Hybrid Thermoelectrics

2020 ◽  
Vol 50 (1) ◽  
pp. 319-344
Author(s):  
Jia Liang ◽  
Shujia Yin ◽  
Chunlei Wan
Keyword(s):  
Solid State ◽  
Hybrid Materials ◽  
Thermoelectric Materials ◽  
Hybrid Composites ◽  
Inorganic Materials ◽  
Atomic Scale ◽  
Thermoelectric Performance ◽  
New Techniques ◽  
Compositional Diversity ◽  
Solid State Cooling

Constructing hybrid composites with organic and inorganic materials at different length scales provides unconventional opportunities in the field of thermoelectric materials, which are classified as hybrid crystal, superlattice, and nanocomposite. A variety of new techniques have been proposed to fabricate hybrid thermoelectric materials with homogeneous microstructures and intimate interfaces, which are critical for good thermoelectric performance. The combination of organic and inorganic materials at the nano or atomic scale can cause strong perturbation in the structural, electron, and phonon characteristics, providing new mechanisms to decouple electrical and thermal transport properties that are not attainable in the pure organic or inorganic counterparts. Because of their increasing thermoelectric performance, compositional diversity, mechanical flexibility, and ease of fabrication, hybrid materials have become the most promising candidates for flexible energy harvesting and solid-state cooling.

An over 10% module efficiency using non-Bi2Te3 thermoelectric materials for recovering heat of <600 K

2021 ◽  
Author(s):  
Zhonglin Bu ◽  
Xinyue Zhang ◽  
Yixin Hu ◽  
Zhiwei Chen ◽  
Siqi Lin ◽  
...  
Keyword(s):  
Solid State ◽  
Thermoelectric Materials ◽  
Heat Recovery ◽  
Waste Heat Recovery ◽  
Waste Heat ◽  
Low Grade ◽  
Thermoelectric Modules ◽  
Module Efficiency

Thermoelectric technology offers unique advantages of all solid-state, silent and emission-free for waste-heat recovery applications. Yet existing thermoelectric modules, in particular for recovering low-grade but abundant heat of <600 K,...

scholarly journals Seebeck Tensor Analysis of (p × n)-type Transverse Thermoelectric Materials

MRS Advances ◽  
2019 ◽  
Vol 4 (08) ◽  
pp. 491-497
Author(s):  
Qing Shao ◽  
Arun Mannodi Kanakkithodi ◽  
Yi Xia ◽  
Maria K.Y. Chan ◽  
Matthew Grayson
Keyword(s):  
Solid State ◽  
Power Factor ◽  
Thermoelectric Materials ◽  
Room Temperature ◽  
Electrical Current ◽  
Anisotropic Materials ◽  
Inorganic Materials ◽  
Tensor Analysis ◽  
Seebeck Coefficients ◽  
Solid State Cooling

ABSTRACTSingle-leg (p × n)-type transverse thermoelectrics (TTE) are reviewed as an alternative to conventional or “longitudinal” double-leg thermoelectrics for applications at room temperature and below. As the name suggests, this unique behavior of (p × n)-type transverse thermoelectrics results from choosing ambipolar anisotropic materials that have a Seebeck tensor with orthogonal p- and n-type Seebeck coefficients, leading to transverse relation between net heat and net electrical current. One feature of such materials is that they can operate near intrinsic doping and, therefore will not suffer from dopant freeze-out, opening the possibility of new cryogenic operation for solid state cooling. In this work, a Seebeck tensor analysis of thermoelectric materials is presented. To compare the performance of transverse thermoelectric materials, a transverse power factor PF⊥ is introduced. Materials searches based on these simple criteria reveal that over 1/4 of the database of about 48,000 inorganic materials could potentially function as (p × n)-type TTE’s, demonstrating the underappreciated prevalence of this class of materials.

Efficient Co-Harvesting of Solar Energy and Low-Grade Heat by Molecular Photoswitches for High Energy Density, Long-Term Stable Solar Thermal Battery

2019 ◽  
Author(s):  
Zhao-Yang Zhang ◽  
Tao LI
Keyword(s):  
Energy Density ◽  
Solar Energy ◽  
High Performance ◽  
High Energy ◽  
Solar Thermal ◽  
High Energy Density ◽  
Low Grade ◽  
Thermal Battery ◽  
Low Grade Heat

Solar energy and ambient heat are two inexhaustible energy sources for addressing the global challenge of energy and sustainability. Solar thermal battery based on molecular switches that can store solar energy and release it as heat has recently attracted great interest, but its development is severely limited by both low energy density and short storage stability. On the other hand, the efficient recovery and upgrading of low-grade heat, especially that of the ambient heat, has been a great challenge. Here we report that solar energy and ambient heat can be simultaneously harvested and stored, which is enabled by room-temperature photochemical crystal-to-liquid transitions of small-molecule photoswitches. The two forms of energy are released together to produce high-temperature heat during the reverse photochemical phase change. This strategy, combined with molecular design, provides high energy density of 320-370 J/g and long-term storage stability (half-life of about 3 months). On this basis, we fabricate high-performance, flexible film devices of solar thermal battery, which can be readily recharged at room temperature with good cycling ability, show fast rate of heat release, and produce high-temperature heat that is >20<sup> o</sup>C higher than the ambient temperature. Our work opens up a new avenue to harvest ambient heat, and demonstrate a feasible strategy to develop high-performance solar thermal battery.

Efficient Co-Harvesting of Solar Energy and Low-Grade Heat by Molecular Photoswitches for High Energy Density, Long-Term Stable Solar Thermal Battery

2019 ◽  
Author(s):  
Zhao-Yang Zhang ◽  
Tao LI
Keyword(s):  
Energy Density ◽  
Solar Energy ◽  
High Performance ◽  
High Energy ◽  
Solar Thermal ◽  
High Energy Density ◽  
Low Grade ◽  
Thermal Battery ◽  
Low Grade Heat

Solar energy and ambient heat are two inexhaustible energy sources for addressing the global challenge of energy and sustainability. Solar thermal battery based on molecular switches that can store solar energy and release it as heat has recently attracted great interest, but its development is severely limited by both low energy density and short storage stability. On the other hand, the efficient recovery and upgrading of low-grade heat, especially that of the ambient heat, has been a great challenge. Here we report that solar energy and ambient heat can be simultaneously harvested and stored, which is enabled by room-temperature photochemical crystal-to-liquid transitions of small-molecule photoswitches. The two forms of energy are released together to produce high-temperature heat during the reverse photochemical phase change. This strategy, combined with molecular design, provides high energy density of 320-370 J/g and long-term storage stability (half-life of about 3 months). On this basis, we fabricate high-performance, flexible film devices of solar thermal battery, which can be readily recharged at room temperature with good cycling ability, show fast rate of heat release, and produce high-temperature heat that is >20<sup> o</sup>C higher than the ambient temperature. Our work opens up a new avenue to harvest ambient heat, and demonstrate a feasible strategy to develop high-performance solar thermal battery.

scholarly journals Thermally regenerative electrochemical cycle for low-grade heat harnessing

2021 ◽  
Vol 2 (2) ◽  
pp. 021304
Author(s):  
Hang Zhang ◽  
Qing Wang
Keyword(s):  
Low Grade ◽  
Low Grade Heat
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