适用于百瓦功率级DMFC的燃料稀释装置

A methanol dilution device for multi-hundred watt DMFC

甲醇穿透是影响直接甲醇燃料电池(DMFC)性能的主要技术障碍,降低甲醇穿透对DMFC性能影响的一个重要手段是实现进料浓度对输出功率的随动变化。设计了一种适用于百瓦功率级DMFC的稀释装置,该甲醇稀释装置结构简单,不需外部能源驱动,甲醇在流动过程中就可以实现快速实时稀释。通过实验和仿真验证了稀释装置的性能,实验数据显示该稀释装置可以实现输出溶液浓度的实时控制。

The methanol crossover is the main technical barrier that affects the performance of the direct methanol fuel cells （DMFC）. The main way of reducing the effect of methanol crossover on the performance of DMFC is to ensure the feed concentration dynamicly changing with the DMFC output power. A methanol dilution device was designed for the multi-hundred watt DMFC system with simple structure and no need of external energy, and the feed methanol could be instantly diluted while in flowing. The performance of the dilution device is verified by experiments and simulation, and the experiment data shows that the device can implement real-time control of the solution concentration.