scholarly journals MoS2 nano flakes with self-adaptive contacts for efficient thermoelectric energy harvesting

Nanoscale ◽  
2018 ◽  
Vol 10 (16) ◽  
pp. 7575-7580 ◽  
Author(s):  
Qingqing Wu ◽  
Hatef Sadeghi ◽  
Colin J. Lambert
Keyword(s):  
Energy Harvesting ◽  
Waste Heat ◽  
Seebeck Effect ◽  
Efficient Conversion ◽  
Thermoelectric Energy ◽  
Thermoelectric Energy Harvesting ◽  
Low Dimensional ◽  
Self Adaptive

We examine the potential of the low-dimensional material MoS2 for the efficient conversion of waste heat to electricity via the Seebeck effect.

scholarly journals Performance Evaluation of Thermoelectric Energy Harvesting System on Operating Rolling Stock

Micromachines ◽  
2018 ◽  
Vol 9 (7) ◽  
pp. 359 ◽  
Author(s):  
Dahoon Ahn ◽  
Kyungwho Choi
Keyword(s):  
Energy Harvesting ◽  
Low Power ◽  
High Speed ◽  
Waste Heat ◽  
Rolling Stock ◽  
Maximum Speed ◽  
Thermoelectric Energy ◽  
Thermoelectric Energy Harvesting ◽  
Energy Harvesting System ◽  
Power Sensor

During rolling stock operation, various kinds of energy such as vibration, heat, and train-induced wind are dissipated. The amount of energy dissipation cannot be overlooked when a heavy railroad vehicle operates at high speed. Therefore, if the wasted energy is effectively harvested, it can be used to power components like low power sensor nodes. This study aims to review a method of collecting waste heat, caused by the axle bearing of bogie in a rolling stock. A thermoelectric module (TEM) was used to convert the temperature gradient between the surface of the axle bearing housing and the outdoor air into electric energy. In this study, the output performance by temperature difference in the TEM was lab-tested and maximized by computational fluid analysis of the cooling fins. The optimized thermoelectric energy harvesting system (TEHS) was designed and applied on a rolling stock to analyze the power-generating performance under operation. When the rolling stock was operated for approximately 57 min including an interval of maximum speed of 300 km/h, the maximum open circuit voltage was measured at approximately 0.4 V. Based on this study, the system is expected to be utilized as a self-powered independent monitoring system if applied to a low-power sensor node in the future.

scholarly journals Intercalation Electrochemistry for Thermoelectric Energy Harvesting from Temperature Fluctuations

2022 ◽  
Author(s):  
Christian Heubner ◽  
Tobias Liebmann ◽  
Michael Schneider ◽  
Alexander Michaelis
Keyword(s):  
Energy Harvesting ◽  
Waste Heat ◽  
Temperature Fluctuations ◽  
Low Grade ◽  
Crucial Step ◽  
Thermoelectric Energy ◽  
Thermoelectric Energy Harvesting ◽  
Effective Use ◽  
The Way

The effective use of energy from sustainable sources is considered a crucial step on the way to a CO2-neutral economy. Low-grade waste heat (< 100°C) is widely and ubiquitously available,...

Thermoelectric Energy Harvesting Electronic Skin (e-Skin) Patch with Reconfigurable Carbon Nanotube Clays

Nano Energy ◽  
2021 ◽  
pp. 106156
Author(s):  
Min Hyouk Kim ◽  
Chang Hee Cho ◽  
Jun Su Kim ◽  
Tae Uk Nam ◽  
Woo-Sik Kim ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Energy Harvesting ◽  
Skin Patch ◽  
Electronic Skin ◽  
Thermoelectric Energy ◽  
Thermoelectric Energy Harvesting

scholarly journals Analysis of Thermoelectric Energy Harvesting with Graphene Aerogel-Supported Form-Stable Phase Change Materials

Nanomaterials ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 2192 ◽  
Author(s):  
Chengbin Yu ◽  
Young Seok Song
Keyword(s):  
Energy Harvesting ◽  
Phase Change ◽  
Stable Phase ◽  
Maximum Output ◽  
Graphene Aerogel ◽  
External Temperature ◽  
Heating And Cooling ◽  
Thermoelectric Power Generator ◽  
Thermoelectric Energy ◽  
Thermoelectric Energy Harvesting

Graphene aerogel-supported phase change material (PCM) composites sustain the initial solid state without any leakage problem when they are melted. The high portion of pure PCM in the composite can absorb or release a relatively large amount of heat during heating and cooling. In this study, these form-stable PCM composites were used to construct a thermoelectric power generator for collecting electrical energy under the external temperature change. The Seebeck effect and the temperature difference between the two sides of the thermal device were applied for thermoelectric energy harvesting. Two different PCM composites were used to collect the thermoelectric energy harvesting due to the different phase transition field in the heating and cooling processes. The graphene nano-platelet (GNP) filler was embedded to increase the thermal conductivities of PCM composites. Maximum output current was investigated by utilizing these two PCM composites with different GNP filler ratios. The thermoelectric energy harvesting efficiencies during heating and cooling were 62.26% and 39.96%, respectively. In addition, a finite element method (FEM) numerical analysis was conducted to model the output profiles.

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