Energy-specific equilibrium in nanowires for efficient thermoelectric power generation

2005 ◽  
Vol 886 ◽  
Author(s):  
Heiner Linke ◽  
Tammy Humphrey ◽  
Mark O'Dwyer
Keyword(s):  
Power Generation ◽  
Thermoelectric Power ◽  
Room Temperature ◽  
High Efficiency ◽  
Power Conversion ◽  
Electric Energy ◽  
Recent Theory ◽  
Electronic Density ◽  
Thermoelectric Power Generation ◽  
Efficient Power

ABSTRACTThere is great scientific, economic and environmental interest in the development of thermoelectric materials capable of direct thermal-to-electric energy conversion with high efficiency. Recent theory predicts that in materials with a fine-tuned electronic density of states, electrons can be placed in energy-specific equilibrium, and the efficiency of thermoelectric power generation can approach the fundamental Carnot limit. Here we review the relevant theory of energy-specific equilibrium. We describe a concept for a proof-of principle demonstration of near-Carnot efficient power conversion involving a single, ballistic nanowire at low temperatures, and we discuss the potential for room-temperature applications in diffusive materials.

High efficiency GeTe-based materials and modules for thermoelectric power generation

2021 ◽  
Author(s):  
Tong Xing ◽  
Qingfeng Song ◽  
Pengfei Qiu ◽  
Qihao Zhang ◽  
Ming Gu ◽  
...  
Keyword(s):  
Power Generation ◽  
Thermoelectric Power ◽  
Heat Recovery ◽  
Waste Heat Recovery ◽  
High Efficiency ◽  
Waste Heat ◽  
Thermoelectric Performance ◽  
Thermoelectric Generators ◽  
Thermoelectric Power Generation

GeTe-based materials have a great potential to be used in thermoelectric generators for waste heat recovery due to their excellent thermoelectric performance, but their module research is greatly lagging behind...

Improved Reversibility of Liquid Lithium-Ammonia Solutions in Vacuum Tube

2014 ◽  
Vol 605 ◽  
pp. 306-309
Author(s):  
Miae Kim ◽  
Ji Beom Kim ◽  
Joon Hyeon Jeon
Keyword(s):  
Power Generation ◽  
Thermoelectric Power ◽  
Conversion Efficiency ◽  
High Efficiency ◽  
Liquid Lithium ◽  
Thermoelectric Power Generation ◽  
Thermoelectric Conversion ◽  
Pressure Equilibrium ◽  
Long Time ◽  
Solution Reaction

Lithium-ammonia (Li-NH3) solutions are possible to be successfully made under the vacuum condition but there still remains a problem of undergoing stable and reliable decomposition in vacuum for high-efficiency thermoelectric power generation. This paper describes a new method, which uses a tube giving pressure equilibrium between closed ends, for improving the thermoelectric conversion efficiency of Li-NH3solutions in vacuum. Thermoelectric experimental results show that solution reaction in the tube proceeds stably and efficiently, and this potentially leads to the improved reversibility of the reaction for deriving the long-time, high-efficiency thermoelectric power.

scholarly journals Observation and Characterization of the Thermoelectric Power Generation

2017 ◽  
Vol 8 (1) ◽  
pp. 94
Author(s):  
A. J. Jin ◽  
Q. Li ◽  
D. Liu ◽  
C. An ◽  
Y. Zhang
Keyword(s):  
Power Generation ◽  
Thermoelectric Power ◽  
Alternative Energy ◽  
Response Curve ◽  
High Efficiency ◽  
Total Output ◽  
Large Power ◽  
Thermoelectric Power Generation ◽  
New Findings

Authors report methodical studies on some novel, alternative energy technologies, and produced results of a thermoelectric power generation (TEPG) system. For the sake of evaluating critical thermoelectric (TE) features, they have invented the state-of-the-art equipment that has important specification capability. The studies cover the efficiency and many aspects of TEPG features as follows. A thermoelectric module is measured in situ that includes TE efficiency, force response curve, current-voltage (I-V) and power-voltage (P-V) characterization, and power temperature (P-T) response curve. They have improved both the higher total output power and the more efficient TEPG efficiency than their comparison TE devices and systems in their studies. In addition, authors will present a series of design, construction, and characterization of a thermal electric generation system which aims to achieve a large power output and high efficiency for the energy harvesting application. Furthermore, their studies lead to important knowledge of TEPG systems in terms of multi-stack modules and of the optimization in TEPG applications. Finally, the prototypes are built for both the tabletop and other applications with new findings. Several sets of prototype TEPG are developed for experimental investigation and data analysis, followed by the summary and conclusions based on the data.

High efficiency Bi2Te3-based materials and devices for thermoelectric power generation between 100 and 300 °C

2016 ◽  
Vol 9 (10) ◽  
pp. 3120-3127 ◽  
Author(s):  
Feng Hao ◽  
Pengfei Qiu ◽  
Yunshan Tang ◽  
Shengqiang Bai ◽  
Tong Xing ◽  
...  
Keyword(s):  
Power Generation ◽  
Temperature Gradient ◽  
Energy Conversion ◽  
Thermoelectric Power ◽  
Thermoelectric Materials ◽  
High Efficiency ◽  
Thermoelectric Power Generation ◽  
Conversion Efficiencies

High efficiency Bi2Te3-based thermoelectric materials and devices with energy conversion efficiencies of up to 6.0% under a temperature gradient of 217 K.

High‐Efficiency Thermoelectric Power Generation Enabled by Homogeneous Incorporation of MXene in (Bi,Sb) 2 Te 3 Matrix

2019 ◽  
Vol 10 (2) ◽  
pp. 1902986 ◽  
Author(s):  
Xiaofang Lu ◽  
Qihao Zhang ◽  
Jincheng Liao ◽  
Hongyi Chen ◽  
Yuchi Fan ◽  
...  
Keyword(s):  
Power Generation ◽  
Thermoelectric Power ◽  
High Efficiency ◽  
Thermoelectric Power Generation

Enhanced Thermoelectric Figure of Merit in P-Type DDy(Fe1-XCox)4Sb12

2011 ◽  
Vol 170 ◽  
pp. 240-243 ◽  
Author(s):  
Gerda Rogl ◽  
Andriy Grytsiv ◽  
Peter Rogl ◽  
Ernst Bauer ◽  
Michael Zehetbauer
Keyword(s):  
Power Generation ◽  
Thermoelectric Power ◽  
Figure Of Merit ◽  
High Efficiency ◽  
Thermoelectric Figure Of Merit ◽  
Thermoelectric Figure ◽  
Thermoelectric Power Generation ◽  
Temperature Range ◽  
P Type ◽  
Co Concentrations

Thermoelectric (TE) properties of skutterudites DDy(Fe1-xCox)4Sb12 for 0.2  x 0.3 were studied in the temperature range from 300 K to 800 K and compared with values for x = 0. Didymium (DD, 4.76 mass % Pr and 95.24 mass % Nd) was used as natural double filler. At Co-concentrations 0.225  x  0.25 maximum TE-performance was obtained with impressive power-factors (4.5 mW/mK2) and ZTs (ZT1.2 at 700 K). Furthermore these skutterudites maintain the high ZT over a broad temperature range providing an excellent p-leg for high-efficiency thermoelectric power generation.

Metal-Semiconductor Nanocomposites for High Efficiency Thermoelectric Power Generation

2013 ◽  
Author(s):  
Ali Shakouri ◽  
Nobby Kobayashi ◽  
Zhixi Bian ◽  
John Bowers ◽  
Art Gossard ◽  
...  
Keyword(s):  
Power Generation ◽  
Thermoelectric Power ◽  
High Efficiency ◽  
Thermoelectric Power Generation ◽  
Semiconductor Nanocomposites

scholarly journals Oligoyne Molecular Junctions for Efficient Room Temperature Thermoelectric Power Generation

Nano Letters ◽  
2015 ◽  
Vol 15 (11) ◽  
pp. 7467-7472 ◽  
Author(s):  
Hatef Sadeghi ◽  
Sara Sangtarash ◽  
Colin J. Lambert
Keyword(s):  
Power Generation ◽  
Thermoelectric Power ◽  
Room Temperature ◽  
Molecular Junctions ◽  
Thermoelectric Power Generation

scholarly journals Thermoelectric Power Generation from Lanthanum Strontium Titanium Oxide at Room Temperature through the Addition of Graphene

2015 ◽  
Vol 7 (29) ◽  
pp. 15898-15908 ◽  
Author(s):  
Yue Lin ◽  
Colin Norman ◽  
Deepanshu Srivastava ◽  
Feridoon Azough ◽  
Li Wang ◽  
...  
Keyword(s):  
Power Generation ◽  
Thermoelectric Power ◽  
Titanium Oxide ◽  
Room Temperature ◽  
Thermoelectric Power Generation ◽  
Strontium Titanium Oxide ◽  
Lanthanum Strontium
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