How do DMFC fuel cells work?
Low-temperature fuel cells are suitable for mobile applications because they generate electricity at low temperatures. The two main types are hydrogen fuel cells and direct methanol fuel cells (DMFC). The SiamGPI portable power systems uses DMFC technology because methanol is safer and more affordable. A mixture of methanol and water is introduced to the anode side by a patented internal water-management system. Ambient air is pumped into the fuel cell on the cathode side. An electrical circuit connects the anode and the cathode sides. Upon contact with the platinum catalyst, methanol releases its electrons which flow in the direction of the cathode. At the same time, protons are released and these penetrate the membrane to the cathode. There, oxygen reacts with the proton and electrons to form pure water. During the chemical process, the fuel cell heats up to about 40° C, releasing water as vapor and carbon dioxide. The amount of water vapor and carbon dioxide released is comparable t
