摘要
对燃料电池用质子交换膜的研究进展进行了简要的概述,特别是从膜材料角度分类.较详细的介绍了全氟化质子交换膜,部分氟化质子交换膜,接枝、交联、共混型质子交换膜等的特性及最新的研究状况,并对其发展前景进行了探讨.
Membrane fouling and degradation always restrict the development of membrane technology. In any membrane processes of liquid separated, concentration polarization is a primary reason that results in membrane fouling. Therefore, reducing concentration polarization amounts to relieving membrane fouling. In this article, firstly the phenomenon of concentration polarization on membrane surface, the concentration polarization model and the calculation of mass transfer coefficient are introduced, anf furthermore one ordinary experimentation is provided for predicting the degree of concentration polarization on membrane surface. Then the effects of operational condition on the membrane surface＇s concentration polarization are analyzed quantitatively, including applied pressure and solution circular flow. Lastly, a little advice on how to reduce membrane fouling that is brought about by concentration polorization is given.
出处
《膜科学与技术》
CAS
CSCD
北大核心
2005年第6期75-79,共5页
Membrane Science and Technology
基金
辽宁省教育厅高等学校科学研究项目资助(20040095)
