Demonstration of a thermoelectric device using electric double-layer gating: Simultaneous control of the thermoelectric properties of p-type and n-type carbon nanotubes

2021 ◽  
Vol 129 (4) ◽  
pp. 045101
Author(s):  
Takenori Fujii
Keyword(s):  
Carbon Nanotubes ◽  
Double Layer ◽  
Thermoelectric Properties ◽  
Electric Double Layer ◽  
Thermoelectric Device ◽  
Simultaneous Control ◽  
P Type

Electric Double-Layer Capacitors Based on Multiwalled Carbon Nanotubes: Can Nanostructuring of the Nanotubes Enhance Performance?

2015 ◽  
Vol 119 (7) ◽  
pp. 3538-3544 ◽  
Author(s):  
Anne-Riikka Rautio ◽  
Olli Pitkänen ◽  
Topias Järvinen ◽  
Ajaikumar Samikannu ◽  
Niina Halonen ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Multiwalled Carbon Nanotubes ◽  
Double Layer ◽  
Electric Double Layer ◽  
Multiwalled Carbon ◽  
Double Layer Capacitors ◽  
Electric Double Layer Capacitors

Power generation performance of π-structure thermoelectric device using NaCo2O4 and Mg2Si elements

2013 ◽  
Vol 1490 ◽  
pp. 185-190 ◽  
Author(s):  
Tomoyuki Nakamura ◽  
Kazuya Hatakeyama ◽  
Masahiro Minowa ◽  
Youhiko Mito ◽  
Koya Arai ◽  
...  
Keyword(s):  
Power Generation ◽  
Thermoelectric Power ◽  
Thermoelectric Properties ◽  
Waste Heat ◽  
Maximum Output Power ◽  
Magnesium Silicide ◽  
Thermoelectric Device ◽  
Maximum Output ◽  
Thermoelectric Power Generation ◽  
P Type

ABSTRACTThermoelectric power generation has been attracting attention as a technology for waste heat utilization in which thermal energy is directly converted into electric energy. It is well known that layered cobalt oxide compounds such as NaCo2O4 and Ca3Co4O9 have high thermoelectric properties in p-type oxide semiconductors. However, in most cases, the thermoelectric properties in n-type oxide materials are not as high. Therefore, n-type magnesium silicide (Mg2Si) has been studied as an alternative due to its non-toxicity, environmental friendliness, lightweight property, and comparative abundance compared with other TE systems. In this study, we fabricated π-structure thermoelectric power generation devices using p-type NaCo2O4 elements and n-type Mg2Si elements. The p- and n-type sintering bodies were fabricated by spark plasma sintering (SPS). To reduce the resistance at the interface between elements and electrodes, we processed the surface of the elements before fabricating the devices. The end face of a Mg2Si element was covered with Ni by SPS and that of a NaCo2O4 element was coated with Ag by silver paste and soldering.The thermoelectric device consisted of 18 pairs of p-type and n-type legs connected with Ag electrodes. The cross-sectional and thickness dimensions of the p-type elements were 3.0 mm × 5.0 mm × 7.6 mm (t) and those of the n-type elements were 3.0 mm × 3.0 mm × 7.6 mm (t). The open circuit voltage was 1.9 V and the maximum output power was 1.4 W at a heat source temperature of 873 K and a cooling water temperature of 283 K in air.

Electric double layer capacitors prepared with polyvinyl alcohol and multi-walled carbon nanotubes

2018 ◽  
Author(s):  
Carla Giselle Martins Real ◽  
Rafael Vicentini ◽  
Willian Gonçalves Nunes ◽  
Otávio Vilas Boas ◽  
Lenon Henrique Costa ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Polyvinyl Alcohol ◽  
Double Layer ◽  
Electric Double Layer ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes ◽  
Double Layer Capacitors ◽  
Electric Double Layer Capacitors

Electrochemical behavior of metallic and semiconducting single-wall carbon nanotubes for electric double-layer capacitor

Carbon ◽  
2012 ◽  
Vol 50 (3) ◽  
pp. 1422-1424 ◽  
Author(s):  
Yasuhiro Yamada ◽  
Takeshi Tanaka ◽  
Kenji Machida ◽  
Shunzo Suematsu ◽  
Kenji Tamamitsu ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Double Layer ◽  
Electrochemical Behavior ◽  
Electric Double Layer ◽  
Single Wall Carbon Nanotubes ◽  
Electric Double Layer Capacitor ◽  
Single Wall Carbon ◽  
Double Layer Capacitor
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