Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5149370 | Journal of Power Sources | 2017 | 10 Pages |
Abstract
In this work, electrochemical performance and parasitic losses are combined in an overall system-level efficiency metric for a high performance, all-vanadium redox flow battery. It was found that pressure drop and parasitic pumping losses are relatively negligible for high performance cells, i.e., those capable of operating at a high current density while at a low flow rate. Through this finding, the Equal Path Length (EPL) flow field architecture was proposed and evaluated. This design has superior mass transport characteristics in comparison with the standard serpentine and interdigitated designs at the expense of increased pressure drop. An Aspect Ratio (AR) design is discussed and evaluated, which demonstrates decreased pressure drop compared to the EPL design, while maintaining similar electrochemical performance under most conditions. This AR design is capable of leading to improved system energy efficiency for flow batteries of all chemistries.
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
Jacob Houser, Alan Pezeshki, Jason T. Clement, Douglas Aaron, Matthew M. Mench,