The big challenge of global phase‐down of carbon dioxide emissions leads us to alternatives in storing electric energy from renewable sources. For the worldwide use of batteries and fuel cells very high amounts of precious electrode materials are needed. Batteries require rare earth metals and environmentally harmful Lithium, PEM fuel cells require noble platinum and iridium. Thus, an economical and eco‐friendly alternative to lithium‐ion‐batteries should be found, especially for the use in domestic homes. In the on‐hand work, a well‐known type of fuel cell is revised and considered in the new context of global material usage. Therefore, an alkaline fuel cell with the classic design of an electrolyte gap in‐between the electrodes is observed. Gas‐diffusion‐electrodes are used, based on Raney‐nickel. Results are given for different catalysts: Raney‐nickel, Raney‐silver, manganic‐oxide, carbon and ruthenium. For the analysis current‐voltage‐characteristics, chronopotentiometry and SEM micrographs are used. The results are discussed in comparison to a unitized reversible PEM fuel cell. At low current density, the alkaline cell is obtaining round‐trip efficiencies close to 70%, while the PEM cell achieves only 60% efficiency. With Silver‐catalyst clear higher efficiencies up to 80% are presentable. The PEM fuel cell shows obvious better performance at high current densities.

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经典AFC的另一个机会？使用无铂气体扩散电极的经济高效的组合式碱性再生燃料电池的实验研究

全球逐步减少二氧化碳排放量的巨大挑战使我们找到了可再生能源储存电能的替代方案。为了在全世界范围内使用电池和燃料电池，需要大量的珍贵电极材料。电池需要稀土金属和对环境有害的锂，PEM燃料电池需要贵重的铂和铱。因此，应该找到一种经济且环保的锂离子电池替代品，尤其是在家庭中使用。在现有工作中，对一种著名的燃料电池进行了修改，并在全球材料使用的新环境中加以考虑。因此，可以观察到碱性燃料电池具有经典的电极间电解质间隙设计。使用基于阮内镍的气体扩散电极。给出了不同催化剂的结果：雷尼镍，雷尼银，氧化锰，碳和钌。为了分析电流-电压特性，使用了计时电位法和SEM显微照片。与单元可逆PEM燃料电池相比，对结果进行了讨论。在低电流密度下，碱性电池的往返效率接近70％，而PEM电池的效率仅为60％。使用银催化剂，可以实现高达80％的更高效率。PEM燃料电池在高电流密度下表现出明显更好的性能。碱性电池的往返效率接近70％，而PEM电池的效率仅为60％。使用银催化剂，可以实现高达80％的更高效率。PEM燃料电池在高电流密度下表现出明显更好的性能。碱性电池的往返效率接近70％，而PEM电池的效率仅为60％。使用银催化剂，可以实现高达80％的更高效率。PEM燃料电池在高电流密度下表现出明显更好的性能。