介绍了水向双极性膜中迁移的速度与膜的最大电流密度之间的关系 .理论分析和初步实验说明水的迁移可以用溶解扩散机理来描述 ,为提高膜的最大电流密度必须提高膜对水的迁移能力 . The relationship between the rate of migration of water to the bipolar membrane and the maximum current density of the membrane is introduced.The theoretical analysis and preliminary experiments show that the migration of water can be described by the mechanism of dissolution and diffusion and the membrane must be enhanced to increase the maximum current density of the membrane Migration to water.