直接甲醇燃料电池膜及阴极模拟

MEMBRANE AND CATHODE NUMERICAL SIMULATION OF A DIRECT METHANOL FUEL CELLS

本文提出一个针对直接甲醇燃料电池膜及阴极的二维、多组分稳态数学模型．模型根据直接甲醇膜燃料电池膜及阴极运行工况特性,考虑质量、动量、组分守恒以及电池中的电化学过程而建立,并应用了计算流体动力学(CFD)技术．模拟结果表明传质对直接甲醇燃料电池的性能影响很大;本文还进行了直接甲醇燃料电池阴极水管理的初步探讨．

A two-dimension, multicompoment steady-state numerical simulation approach is presented to evaluation a direct methanol fuel cells （DMFC）. The model is applied to simulate the membrane and the cathode sides of DMFC. The model is based on the conservation of mass, momentum, species, and combines the electrochemistry process in the DMFC. The numerical model is created using an advanced computational fluid dynamics （CFD） technique. The simulative results reveal that： the mass transfer has great influence on the performance of DMFC. The water management in DMFC was analyzed simply.