SEARCH Articles Figures Tables Direct alcohol fuel cells membranes Direct fuel cell Direct membrane fuel cells cell configurations Direct membrane fuel cells methanol crossover Direct membrane fuel cells performance degradation Direct membranes Direct methanol fuel cell membrane thickness Direct methanol fuel cell proton-exchange membrane Direct methanol fuel cell, membrane stability Direct methanol fuel cells exchange membrane Direct methanol fuel cells membrane Direct methanol fuel cells membrane electrode assembly Energy conversion membranes direct methanol fuel cells Fuel cell membrane Fuel direction Membrane technology direct methanol fuel cells Proton exchange membrane -based direct methanol fuel cell