scholarly journals Comprehensive Review on Thermoelectric Electrodeposits: Enhancing Thermoelectric Performance Through Nanoengineering

2021 ◽  
Vol 9 ◽  
Author(s):  
Tingjun Wu ◽  
Jiwon Kim ◽  
Jae-Hong Lim ◽  
Min-Seok Kim ◽  
Nosang V. Myung
Keyword(s):  
Crystal Structure ◽  
Thermoelectric Materials ◽  
Cost Effective ◽  
Energy Conversion Efficiency ◽  
Device Fabrication ◽  
Synthesis Methods ◽  
Thermoelectric Devices ◽  
Power Generators ◽  
Compact Size ◽  
Nanoscale Science

Thermoelectric devices based power generation and cooling systemsystem have lot of advantages over conventional refrigerator and power generators, becausebecause of solid-state devicesdevices, compact size, good scalability, nono-emissions and low maintenance requirement with long operating lifetime. However, the applications of thermoelectric devices have been limited owingowing to their low energy conversion efficiency. It has drawn tremendous attention in the field of thermoelectric materials and devices in the 21st century because of the need of sustainable energy harvesting technology and the ability to develop higher performance thermoelectric materials through nanoscale science and defect engineering. Among various fabrication methods, electrodeposition is one of the most promising synthesis methods to fabricate devices because of its ability to control morphology, composition, crystallinity, and crystal structure of materials through controlling electrodeposition parameters. Additionally, it is an additive manufacturing technique with minimum waste materials that operates at near room temperature. Furthermore, its growth rate is significantly higher (i.e., a few hundred microns per hour) than the vacuum processes, which allows device fabrication in cost effective matter. In this paper, the latest development of various electrodeposited thermoelectric materials (i.e., Te, PbTe, Bi2Te3 and their derivatives, BiSe, BiS, Sb2Te3) in different forms including thin films, nanowires, and nanocomposites were comprehensively reviewed. Additionally, their thermoelectric properties are correlated to the composition, morphology, and crystal structure.

Highly efficient functional GexPb1−xTe based thermoelectric alloys

2014 ◽  
Vol 16 (37) ◽  
pp. 20120-20126 ◽  
Author(s):  
Yaniv Gelbstein ◽  
Joseph Davidow
Keyword(s):  
Energy Conversion ◽  
Fuel Consumption ◽  
Conversion Efficiency ◽  
Thermoelectric Materials ◽  
Waste Heat ◽  
Electrical Power ◽  
Electrical Energy ◽  
Energy Conversion Efficiency ◽  
Efficient Implementation ◽  
Thermoelectric Devices

Methods for enhancement of the direct thermal to electrical energy conversion efficiency, upon development of advanced thermoelectric materials, are constantly investigated mainly for an efficient implementation of thermoelectric devices in automotive vehicles, for utilizing the waste heat generated in such engines into useful electrical power and thereby reduction of the fuel consumption and CO2 emission levels.

Modification of Thermoelectric Properties Using Insertion Techniques

1998 ◽  
Vol 545 ◽  
Author(s):  
E. Hatzikraniotis ◽  
Th. Kyratsi ◽  
K. Chrissafis ◽  
K. M. Paraskevopoulos
Keyword(s):  
Crystal Structure ◽  
Thermoelectric Properties ◽  
Thermoelectric Materials ◽  
Cost Effective ◽  
Effective Alternative ◽  
Insertion Technique ◽  
Cost Effective Alternative ◽  
Insertion Techniques ◽  
Doping Technique ◽  
Foreign Species

AbstractIn this work is presented the application insertion techniques for the modification of the performance of thermoelectric materials. The results indicate that in cases as in Bi2Se3 compounds where insertion of foreign species in the lattice is possible due to its particular crystal structure, the insertion technique could be proved a valuable easy to apply and cost effective, alternative to doping technique. The techniques can produce homogeneous materials with electronic and thermoelectric properties finely tuned.

Pavonite homologues as potential n-type thermoelectric materials: crystal structure and performance

2021 ◽  
Author(s):  
Shangqing Qu ◽  
Jing Zhao ◽  
Zimin Jiang ◽  
Dequan Jiang ◽  
Yonggang Wang
Keyword(s):  
Crystal Structure ◽  
Thermoelectric Material ◽  
Thermoelectric Materials ◽  
Homologous Series ◽  
And Performance

The pavonite homologous series assembled from two basic modules is a potential n-type thermoelectric material.

Metal-like electrical conductivity in LaxSr2−xTiMoO6 oxides for high temperature thermoelectric power generation

2017 ◽  
Vol 46 (18) ◽  
pp. 5872-5879 ◽  
Author(s):  
Mandvi Saxena ◽  
Tanmoy Maiti
Keyword(s):  
Power Generation ◽  
Electrical Conductivity ◽  
High Temperature ◽  
Energy Conversion ◽  
Thermoelectric Power ◽  
Conversion Efficiency ◽  
Energy Conversion Efficiency ◽  
Power Generators ◽  
Thermoelectric Power Generation

Increasing electrical conductivity in oxides, which are inherently insulators, can be a potential route in developing oxide-based thermoelectric power generators with higher energy conversion efficiency.

Analytic Optimization of Cost Effective Thermoelectric Generation on Top of Rankine Cycle

2013 ◽  
Author(s):  
Kazuaki Yazawa ◽  
Yee Rui Koh ◽  
Ali Shakouri
Keyword(s):  
Steam Turbine ◽  
Fuel Efficiency ◽  
Cost Effective ◽  
Rankine Cycle ◽  
Energy Conversion Efficiency ◽  
Design Parameters ◽  
Steam Temperature ◽  
Combined System ◽  
Fuel Consumption Rate ◽  
The Impact

Thermoelectric (TE) generators have a potential advantage of the wide applicable temperature range by a proper selection of materials. In contrast, a steam turbine (ST) as a Rankine cycle thermodynamic generator is limited up to more or less 630 °C for the heat source. Unlike typical waste energy recovery systems, we propose a combined system placing a TE generator on top of a ST Rankine cycle generator. This system produces an additional power from the same energy source comparing to a stand-alone steam turbine system. Fuel efficiency is essential both for the economic efficiency and the ecological friendliness, especially for the global warming concern on the carbon dioxide (CO2) emission. We report our study of the overall performance of the combined system with primarily focusing on the design parameters of thermoelectric generators. The steam temperature connecting two individual generators gives a trade-off in the system design. Too much lower the temperature reduces the ST performance and too much higher the temperature reduces the temperature difference across the TE generator hence reduces the TE performance. Based on the analytic modeling, the optimum steam temperature to be designed is found near at the maximum power design of TE generator. This optimum point changes depending on the hours-of-operation. It is because the energy conversion efficiency directly connects to the fuel consumption rate. As the result, physical upper-limit temperature of steam for ST appeared to provide the best fuel economy. We also investigated the impact of improving the figure-of-merit (ZT) of TE materials. As like generic TE engines, reduction of thermal conductivity is the most influential parameter for improvement. We also discuss the cost-performance. The combined system provides the payback per power output at the initial and also provides the significantly better energy economy [$/KWh].

scholarly journals Screening for Cu–S based thermoelectric materials using crystal structure features

2017 ◽  
Vol 5 (10) ◽  
pp. 5013-5019 ◽  
Author(s):  
Rui-zhi Zhang ◽  
Kan Chen ◽  
Baoli Du ◽  
Michael J. Reece
Keyword(s):  
Crystal Structure ◽  
High Throughput ◽  
Thermoelectric Materials ◽  
High Throughput Screening

Using high throughput screening, thirteen compounds were identified as promising thermoelectric materials and two of them were successfully fabricated.

scholarly journals A Feasibility Study of Fabrication of Piezoelectric Energy Harvesters on Commercially Available Aluminum Foil

Energies ◽  
2019 ◽  
Vol 12 (14) ◽  
pp. 2797 ◽  
Author(s):  
Chongsei Yoon ◽  
Buil Jeon ◽  
Giwan Yoon
Keyword(s):  
Energy Harvesting ◽  
Elevated Temperatures ◽  
Aluminum Foil ◽  
Cost Effective ◽  
Device Fabrication ◽  
Point Of View ◽  
Plastic Substrate ◽  
Device Performance ◽  
Piezoelectric Energy ◽  
Energy Harvesting Devices

In this paper, we present zinc oxide (ZnO)-based flexible harvesting devices employing commercially available, cost-effective thin aluminum (Al) foils as substrates and conductive bottom electrodes. From the device fabrication point of view, Al-foils have a relatively high melting point, allowing for device processing and annealing treatments at elevated temperatures, which flexible plastic substrate materials cannot sustain because of their relatively low melting temperatures. Moreover, Al-foil is a highly cost-effective, commercially available material. In this work, we fabricated and characterized various kinds of multilayered thin-film energy harvesting devices, employing Al-foils in order to verify their device performance. The fabricated devices exhibited peak-to-peak output voltages ranging from 0.025 V to 0.140 V. These results suggest that it is feasible to employ Al-foils to fabricate energy-efficient energy harvesting devices at relatively high temperatures. It is anticipated that with further process optimization and device integration, device performance can be further improved.

Progress on Mg2Si Thermoelectric Materials

2014 ◽  
Vol 886 ◽  
pp. 71-74 ◽  
Author(s):  
Xiao Dong Luo ◽  
Hao Liu ◽  
Wen Lin Xu ◽  
Yong Xiang Zhu
Keyword(s):  
Thermoelectric Materials ◽  
Potential Application ◽  
Research Progress ◽  
Preparation Technique ◽  
Thermoelectric Devices ◽  
Existing Problems ◽  
Basic Performance ◽  
The Future

Mg2Si which is composed of less toxic and naturally abundant elements,has attracted more attention for its potential application to thermoelectric devices. In this paper, the basic performance and preparation technique of Mg2Si thermoelectric materials are introduced. reviewed the current research progress of Mg2Si thermoelectricity. And the paper points out the existing problems and the trend of study in the future.

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