直接甲醇燃料电池性能

Performance of a Direct Methanol Fuel Cell

采用商品Pt_Ru/C和Pt/C催化剂制备成甲醇阳极和氧阴极 ,Nafion_115为固体电解质膜 ,组装成面积为 9cm2 单电池 ,研究了电池在放电运转过程中各种操作条件 ,如温度 ,氧气压力 ,甲醇浓度等对电池性能的影响 ,并考察了电池室温放电性能随时间的变化 .发现增加电池的温度和氧气压力均可明显提高电池性能 。

A direct methanol fuel cell with 9cm 2 active area consists of Pt_Ru/C anode,Pt/C cathode and Nafion 115 membrane.The effect of operating conditions:methanol solution concentration,oxygen pressure and cell temperature on the cell performances was investigated.The results show that performance of single cell was enhanced by increasing oxygen pressure and cell temperature,and a maximum power density 75 mW/cm 2 was obtained in the range of 250_300 mA/cm 2 current density,0.2 MPa oxygen pressure,1.0 mol/L methanol concentration and 75 ℃ cell temperature.When cell operating at room temperature,a relatively low,but a stable performance of cell was also observed.