Investigation of a Stack for Direct Dimethyl Ether Fuel Cell

In this study, we investigated a stack of direct dimethyl ether fuel cell (DDFC). A small passive DDFC stack had been developed, and a good uniformity could be observed from all single cells. The open-circuit voltage (OCV) of the stack was around 4 V, and its maximum power was 300 mW. No matter which means was adopted, only the values of current and voltage can be changed. The total output power of the stack remains the same. Therefore, based on the different requirements of electrical appliances on discharge, different ways of electric connection can be adopted for the stack.