| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a gas diffusion layer in which a hollow portion is formed and a movement of fuel and its by-product are smoothed to improve a performance of a fuel cell, and provided its manufacturing method. <P>SOLUTION: A hollow portion, which is made hollow in up and down directions in a gas diffusion layer 30 of a fuel battery cell of which an operation temperature is 100°C or less, is formed by using a frame with a specific pattern or by using a micro-needle 21 or a micro-lens 22, and diffusion resistance inside the gas diffusion layer is lowered, and fuel and a reactant can easily be moved through the hollow portion, and a reaction can smoothly be carried out even in a state that a fuel partial pressure is low, and the fuel cell performance can be improved. <P>COPYRIGHT: (C)2009,JPO&INPIT |
