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Directly deposited Nafion/TiO2 composite membranes for high power medium temperature fuel cells

机译:用于高功率介质温度燃料电池的直接沉积Nafion / TiO2复合膜

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This work presents a simple production method for TiO _(2) reinforced Nafion? membranes which are stable up to a 120 °C operation temperature. The novel TiO _(2) reinforced membranes yield a maximum power density of 2.02 W cm ~(?2) at 120 °C; H _(2) /O _(2) ; 0.5/0.5 L min ~(?1) ; 90% RH, 300/300 kPa _(abs) . This is 2.8 times higher than the highest power density for TiO _(2) reinforced membranes so far published in literature. The described membranes even exceed the maximum power density of a commercial Nafion? HP membrane in an identical measurement setup at 100 °C and 120 °C. Compared to the commercial Nafion? HP membrane the maximum power density was increased by 27% and 9% at 100 °C and 120 °C, respectively. The membrane is manufactured by drop-casting a dispersion of Nafion? and TiO _(2) nanoparticles onto both the anode and cathode gas diffusion electrodes. Furthermore pure Nafion? membranes manufactured by the same method had higher membrane resistances at temperatures >100 °C than TiO _(2) -reinforced Nafion? membranes.
机译:这项工作提出了一种简单的TIO _(2)加强的Nafion生产方法?膜稳定至120℃的操作温度。新型TiO _(2)增强膜在120℃下产生2.02Wm〜(Δ2)的最大功率密度; H _(2)/ o _(2); 0.5 / 0.5 l min〜(?1); 90%RH,300/300 KPA _(ABS)。这比迄今为止在文献中发表的TiO _(2)增强膜的最高功率密度高2.8倍。所描述的膜甚至超过商业保险的最大功率密度? HP膜在100°C和120°C的相同测量设置中。与商业3afion相比? HP膜的最大功率密度分别在100°C和120℃下增加27%和9%。膜通过滴落浇注Nafion的分散来制造?和TiO _(2)纳米颗粒在阳极和阴极气体扩散电极上。还有纯净的保税吗?通过相同方法制造的膜在温度下具有较高的膜抗性> 100°C而不是TiO _(2) - 强迫Nafion?膜。

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