DATE2025.02.18 #Press Releases
A Big Step in Liquid-State Electric Cooling Technology
- The maximum temperature difference achieved in the refrigeration technology using a battery reaction -
Summary
A research group led by Graduate Student Yusuke Wakayama, Graduate Student Fumitoshi Matoba (at the time of this study), Assistant Professor Hongyao Zhou and Professor Teppei Yamada of the Graduate School of Science at the University of Tokyo observed the largest temperature change in the cooling effect caused by the endothermic process of a redox reaction.
The team developed an experimental method to measure the electrochemical Peltier effect with improved accuracy from the earlier studies and a theoretical model to predict the temperature change induced between a pair of electrodes. Through the modeling and the experimental optimizations, the team observed the largest temperature change caused by the electrochemical Peltier effect by using much smaller current (less than one percent) than the earlier studies. The electrochemical Peltier effect can readily be integrated into an existing liquid cooling technology by circulating the liquid electrolyte while applying electricity. This liquid-state electric cooling technology is expected to show a great advantage in a local cooling which can efficiently carry away heat from the hot spot generated in CPU or solar cells, for example.
Figure：Measurement protocols developed for the electrochemical Peltier effect and the representative results of the experiments and the simulations.
The adverse effect from Joule heating can be eliminated by measuring the temperature change while alternating the direction of the electric current. The largest temperature change induced by the electrochemical Peltier effect is recorded in this study.
Journal
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Journal name Advanced Energy MaterialsTitle of paper