Development of the new surface treatment to be suitable for a stainless steel separator for polymer electrolyte fuel cell

商业上可用的燃料电池太贵了，需要降低成本。特别是，分离器的成本降低是必要的。本研究采用一种新的表面处理方法对不锈钢隔膜进行表面处理，以提高其导电性。首先，我们将不锈钢薄板浸泡在酒精和石墨粉的混合物中，使石墨均匀地附着在不锈钢薄板的表面。然后，将不锈钢夹在新的不锈钢薄板中，并进行冷轧，使其与石墨粉牢固结合。

A commercially available fuel cell is too expensive, and cost reduction of it is required. Particularly, cost reduction of the separator is necessary. In this study, a new surface treatment has been applied to the separator of stainless steel, which is a candidate material for a low price separator, to improve electric conductivity. At first, we immersed stainless steel sheets in the mixture of alcohol and graphite powder to adhere graphite to the surface of stainless steel sheets uniformly. Then, the stainless steel was sandwiched with new stainless steel sheets and cold-rolled to adhere graphite powder strongly.