New preparation of Oxygen-Permselective Membranes and their Application for the Air Battery of Next Generation

从促进氧传输的角度出发，研究了新一代空气电池用氧选择膜。通过检测氧在碳电极上的还原电流，用半电池电化学法测量了氧在膜中的渗透。这种方法对于含钴卟啉作为氧特定载体的膜的促进氧传递特别有效。在含有牛血红蛋白的液膜中也观察到了促进氧传递的现象。在多孔玻璃膜上成功地实现了氧的化学比表面扩散。该膜既表现出对氧的渗透选择性，又表现出较高的渗透性。用含氧表面扩散的并行模型分析了氧的强化扩散和比扩散。通过在膜上涂覆一层薄薄的氟聚合物或聚偏二氯乙烯聚合物，使膜具有阻隔水蒸气的性能。这些膜的氧促进因子提高到80。

Oxygen-permselective membranes for the air battery of next generation were studied from the view point of facilitated transport of oxygen. Oxygen permeation through membranes was measured electrochemically with a half cell by detecting the reduction current of the permeated oxygen on a carbon electrode. This method was especially effective for the facilitated oxygen transport thorugh the membranes containing cobaltporphyrin as an oxygen-specific fixed carrier. The facilitated oxygen transport was also observed for a liquid membrane containing bovine hemoglobin. Chemically specific surface diffusion of oxygen was successfully realized on a porous glass membrane modified on its pore surface with cobaltporphyrin. The membrane displayd both permselectivity for oxygen and high permeability. The enhanced and specific diffusion of oxygen was analyzed with a parallel model involving surface diffusion of oxygen. Barrier property against water vapor was given to the membranes by coating a thin layr of fluoro-polymer or by polyvinyliden chloride polymer. The facilitated factor of oxygen was augmented to 80 for these membranes.