特种Nafion溶液制备及其在PEMFC中的应用研究

Nafion溶液在燃料电池、电极修饰、电化学分析、电化学催化等领域具有广泛用途。采用特种高沸点溶剂，获得了溶铸性能优良Nafion的溶液。比较溶铸Nafion膜与原始Nafion膜的IR光谱可以看出，Nafion溶液制备方法未对Nafion膜的化学组成与分子结构产生影响，但溶铸膜的分子排列更加规整有序。将该溶液在PEMFC中应用，其性能优于目前的商品水—醇体系Nafion溶液。
关 键 词 电化学; Nafion溶液; 质子交换膜; 质子交换膜燃料电池

Abstract Nafion solution has been widely applied in many fields, for example, the fuel cell, the modifying electrode, the electrochemistry analysis, and the electrochemistry catalyze. The technique of preparation of special Nafion solution by using high boiling-point dissolvent is reported. Comparing the IR spectrum of the casting Nafion membrane with the original Nafion membrane, it is know that the preparation method of special Nafion solution could not change the chemical composition and the molecule structure of the Nafion membrane, and that the molecule arrangement of the casting Nafion membrane is more orderliness than the original Nafion membrane. This solution obtained in the technique has more superiority property than the Nafion solution of water-alcohols (low boiling-point) system when it is used in the PEMFC.
Key words electrochemistry; Nafion solution; proton exchange membranes; PEMFC