Abstract
The cell performance and the polarization behavior of the fuel cell using alkaline NaBH 4–N 2H 4 solutions as the fuel were investigated. It was found that the use of different membrane: anion exchange membrane (AEM) or cation exchange membrane (CEM) would influence the cell performance and cathode polarization behavior. The direct borohydride fuel cell (DBFC) using CEM gave a higher power density than that using AEM, but the direct hydrazine fuel cell (DHFC) using CEM gave a lower power density compared with the DHFC using AEM. In the DBFCs using CEM, N 2H 4 addition in alkaline NaBH 4 solution improved the cell performance but it did not make any difference when adding more N 2H 4. On the other hand, in the DBFCs using AEM, cell performance was improved with increasing the amount of N 2H 4 in the anolyte.
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