Impact of Air Temperature and Humidity on Performance of Heat-Source-Free Water-Floating Single-Walled Carbon Nanotube Thermoelectric Generators for IoT Sensors.

ABSTRACT: Thermoelectric generators (TEGs), which can generate electricity simply by floating in water, have high potential for application as power supplies of IoT sensors. However, few studies on single-wall carbon nanotube (SWCNT)-TEGs have examined the effects of the power generation environment. Therefore, we investigated the impact of the relative humidity and temperature on the TEG performance. The SWCNT-TEGs were measured in environments with air temperature controlled at 25-40 °C and relative humidity controlled at 50-90%. Evaporative cooling occurs under environmental conditions with lower relative humidity and higher temperatures, resulting in higher output voltages. The SWCNT-TEG output voltage at 50% relative humidity and 40 °C was 0.26 mV, which was approximately 1.6 times higher than

SUBMITTER: Nakazawa Y 

PROVIDER: S-EPMC12736923 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature