| 摘要 |
A porous electrode substrate in which carbon fibers dispersed in the structure thereof have a fiber diameter of 3-15μm and a fiber length of 2-30mm, and are joined to one another by a resin carbide, wherein the pore distribution satisfies the following conditions when measuring the porous electrode substrate using the mercury press-in method. (Conditions) A pore distribution curve in which the horizontal axis is a common logarithmic display, wherein the diameter interval of 1-100μm comprises 80 or more measurement points at equal intervals along the common logarithmic display, and the skewness S of the pore distribution in the diameter interval of 1-100μm is -2.0<S<-0.8, while the kurtosis K thereof is 3.5<K<10. |
