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 ,在合适的甲醇浓度和氧气压力下电池在室温具有一定的稳定放电性能
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.
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