Influence of current collector and cathode area di

Authors: JiWon Son HueSup Song

Publish Date: 2014/10/10

Volume: 1, Issue: 4, Pages: 313-316

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Abstract

The influence of the area difference between the current collector and the thinfilmprocessed cathode on the performance evaluation of the solid oxide fuel cell SOFC is investigated Two 2 cm by 2 cm anode supported SOFCs with a 1 cm by 1 cm cathode Cell10 and a 15 cm by 15 cm cathode Cell225 are fabricated and the performances are measured in a button cell test setup with a cathode current collection area of 1 cm by 1 cm Significantly different cell power outputs are measured The total power output of the Cell225 is 135~168 times to that of the Cell10 The discrepancy is considered to originate from two major reasons 1 limited lateral conduction and 2 thin thickness of the cathode The cell performance can be overestimated when the smaller area is chosen or underestimated when the larger area is chosen as the active area between the current collection area and the cathode area The present study identifies another important factor to be considered to exactly assess the performance of the SOFC implementing thinfilmprocessed electrode

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