Author/Authors :
Zhang، نويسنده , , Yuwei and Ge، نويسنده , , Junjie and Cui، نويسنده , , Zhiming and Liu، نويسنده , , Changpeng and Xing، نويسنده , , Wei and Zhang، نويسنده , , Jiujun and Lin، نويسنده , , Haidan and Na، نويسنده , , Hui، نويسنده ,
Abstract :
A series of sulphonated poly (ether ether ketone) (sPEEK) membranes for direct methanol fuel cells are successfully prepared under different humidity degree conditions. These membranes exhibit enhanced proton conductivity at high humidity degree. It is proved that the different proton conductivity is ascribed to the orientation arrangement of sulphonic acid groups, which is caused by environmental water in the preparing process of membranes. A model is established by analyzing the dynamics of membrane formation and proved by Field emission scanning electron microscopy (ESEM) and X-ray photoelectron spectroscopy (XPS).
Keywords :
proton conductivity , Fuel cells , Nanostructure , Humidity , Sulphonated poly (ether ether ketone)
