Transient investigation of passive alkaline membrane direct methanol fuel cell

摘要: Abstract Passive direct methanol fuel cell (DMFC) is considered as an attractive power source for portable devices. In this study, a transient multiphase model passive alkaline anion exchange membrane DMFC (AAEM-DMFC) developed. The results show that the density decreases during operation and more difficult to maintain stable with higher current or lower voltage. efficiency increases increment of decrement With certain concentration, optimal energy achieved at moderate Increasing initial concentration in reservoir can improve but decrease efficiency. Anode micro-porous layer (MPL) increase high (or low density) cause negative effect on density). Cathode MPL shows similar less significant effect. Generally, whether use should be determined by different operating conditions demand.