Shaukat, Shingruf, Tabish, Asif Nadeem, Irshad, Muneeb, Akbar, Samina, Farhat, Iqra, and Fan, Liyuan (2024) A comprehensive study on effective triple‐phase boundary density and its correlation with active anode thickness in solid oxide fuel cells. Energy Science & Engineering, 12 (9). pp. 3883-3894.

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Abstract

Solid oxide fuel cells (SOFCs) are highly promising devices for efficient and low-emission energy conversion. The effective triple-phase boundary (TPB) density refers to the fraction of percolated TPB density that effectively contributes to the current production during cell operation. This is one of the most fundamental and least understood aspects of the cell design and performance assessment. This study methodically investigates the effective TPB density, using a computational fluid dynamics model based on the TPB-based kinetics and its correlation with the active anode thickness. Experimental data from previously published studies with varying thicknesses of anode functional layer and operating regimes are utilized to validate the model. The results of this study reaffirm that a significant fraction of the percolated TPB density in SOFCs remains unused during cell operation. This finding emphasizes the need to consider the effective TPB density for theoretical and experimental investigations focusing on optimizing cell performance. Furthermore, an inverse relationship is observed between the effective TPB density and the active anode thickness; a lower active anode thickness corresponds to a higher effective TPB density and vice versa. These findings contribute to advancing sustainable energy systems by guiding the development of more efficient SOFC designs and operational strategies that effectively utilize TPB sites.

Item ID:	85540
Item Type:	Article (Research - C1)
ISSN:	2050-0505
Copyright Information:	© 2024 The Author(s). Energy Science & Engineering published by Society of Chemical Industry and John Wiley & Sons Ltd. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited
Date Deposited:	20 May 2025 04:08
FoR Codes:	40 ENGINEERING > 4004 Chemical engineering > 400404 Electrochemical energy storage and conversion @ 100%
SEO Codes:	28 EXPANDING KNOWLEDGE > 2801 Expanding knowledge > 280110 Expanding knowledge in engineering @ 100%
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