Example image of eyePlorer eyePlorer map for 'Direct methanol fuel cell': Methanol Proton exchange membrane fuel cell Fossil fuel reforming Hydrogen Molar concentration Reformed methanol fuel cell Anode Carbon dioxide Digital camera Laptop Mobile phone Compressed hydrogen Energy density Lithium-ion battery Flammability Toxicity 2005 United States Department of Transportation Catalysis Redox Cathode Ion Nafion Oxygen Electron Half-reaction Platinum Ruthenium Active transport Molecular diffusion Osmosis Carbon monoxide Gold Alkali anion exchange membrane Portable fuel cell applications Hydrogen technologies Methanol economy Formic acid fuel cell Fuel cell Hydrogen storage Glossary of fuel cell terms