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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
a.h.kazim@gatech.edu

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
cola@gatech.edu

1Corresponding author.

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

Abstract

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.

Copyright (c) 2018 by ASME
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