Direct Methanol Fuel Cell (DMFC) Operation Explained #114408 (License: Personal Use)

This diagram illustrates the core electrochemical processes in a direct methanol fuel cell (DMFC): at the anode, methanol reacts with hydroxide ions to produce carbon dioxide, water, and electrons; at the cathode, oxygen combines with water and electrons to regenerate hydroxide ions. The proton exchange membrane (or OH⁻-conducting electrolyte) enables ion crossover while separating reactants, and the resulting electron flow powers external devices like the depicted light bulb.

Used in educational materials, engineering textbooks, and clean-energy websites to explain fuel cell fundamentals; targets students, researchers, and sustainability professionals seeking technical clarity on portable hydrogen-free fuel cells.