Nanostructured Carbon Electrodes for Increased Power Density in Flow Thermo-electrochemical Generator Heat Sinks

[+] Author and Article Information
Ali Hussain Kazim

George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, USA; Department of Mechanical Engineering, University of Engineering and Technology, Lahore, Lahore, Punjab 54890, PK

Dr. Baratunde A. Cola

Associate Professor, George W. Woodruff School of Mechanical Engineering, School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, USA

1Corresponding author.

ASME doi:10.1115/1.4040819 History: Received December 14, 2017; Revised June 30, 2018


Heat is a by-product of all energy conversion mechanisms. Efforts to utilize and dissipate heat remains a challenge for further development and optimization of energy conversion devices. Stationary thermo-electrochemical cell is a low cost method to harvest heat, however it suffers from low power density. Flow thermo-electrochemical cell (fTEC) heat sink presents itself as a unique solution as it can simultaneously scavenge and remove heat to maintain devices in the operating range. In this work, Multi-walled nanotube electrodes have been used and electrode configuration has been changed to maximize the temperature difference over a small inter electrode separation. As a result power per unit area of fTEC heat sink has been improved more than 7-fold to 0.36 W/m^2.

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