Lo Vecchio Carmelo, Carbone Alessandra, Gatto Irene, Baglio Vincenzo
Consiglio Nazionale Delle Ricerche, Istituto di Tecnologie Avanzate per l'Energia "Nicola Giordano", CNR-ITAE, Via Salita Santa Lucia Sopra Contesse 5, 98126 Messina, Italy.
Polymers (Basel). 2023 Mar 21;15(6):1555. doi: 10.3390/polym15061555.
This paper describes the use of a commercial Fumasep FAA3-50 membrane as an anion exchange membrane (AEM) in alkaline direct methanol fuel cells (ADMFCs). The membrane, supplied in bromide form, is first exchanged in chloride and successively in the hydroxide form. Anionic conductivity measurements are carried out in both a KOH aqueous solution and in a KOH/methanol mixture. AEM-DMFC tests are performed by feeding 1 M methanol, with or without 1 M KOH as a supporting electrolyte. A maximum power density of 5.2 mW cm at 60 °C and 33.2 mW cm at 80 °C is reached in KOH-free feeding and in the alkaline mixture, respectively. These values are in good agreement with some results in the literature obtained with similar experimental conditions but with different anion exchange membranes (AEMs). Finally, methanol crossover is investigated and corresponds to a maximum value of 1.45 × 10 mol s cm at 50 °C in a 1 M KOH methanol solution, thus indicating that the Fumasep FAA3-50 membrane in OH form is a good candidate for ADMFC application.
本文描述了将商用Fumasep FAA3 - 50膜用作碱性直接甲醇燃料电池（ADMFC）中的阴离子交换膜（AEM）。该膜以溴化物形式供应，首先在氯化物中进行交换，然后依次转化为氢氧化物形式。在氢氧化钾水溶液和氢氧化钾/甲醇混合物中均进行了阴离子电导率测量。通过进料1 M甲醇（有无1 M氢氧化钾作为支持电解质）进行AEM - DMFC测试。在无氢氧化钾进料和碱性混合物中，分别在60℃时达到最大功率密度5.2 mW/cm²，在80℃时达到33.2 mW/cm²。这些值与文献中在类似实验条件下但使用不同阴离子交换膜（AEM）所获得的一些结果高度一致。最后，对甲醇渗透进行了研究，在50℃的1 M氢氧化钾甲醇溶液中，甲醇渗透最大值为1.45×10⁻⁷ mol s⁻¹ cm⁻²，这表明OH形式的Fumasep FAA3 - 50膜是ADMFC应用的良好候选材料。
