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本文讨论了中等电流密度下,以多孔石墨作空气(氧)多孔电极的集流器的可能性.据理论分析,石墨有效扩散系数D为0.01cm~2/sec时,电极适宜厚度约为2一4mm.增大D,厚度尚可适度增大.为使极化分布基本均匀,电极可作成带长方形汇流框的形式.长1米、宽约40厘米的电极,当O_2还原活性不太高时,可用2cm宽、3cm高的边框.电极可以两两相背粘合,适当布置通气孔道,以形成中空的、可通空气的气体扩散电极.
This article discusses the possibility of using porous graphite as a current collector for air (oxygen) porous electrodes at moderate current densities.According to the theoretical analysis, when the effective diffusion coefficient D of graphite is 0.01cm ~ 2 / sec, the suitable electrode thickness is about 2 A 4mm. Increase D, the thickness can be moderately increased. In order to make the polarization distribution is uniform, the electrode can be made with a rectangular form of confluence box .1 meter long, 40 cm wide electrode, when the O2 reduction activity is not too high When 2cm wide and 3cm high are available, the electrodes can be bonded back and forth and the vents can be properly arranged to form a hollow, air-permeable gas diffusion electrode.