METHOD FOR MANUFACTURING SEPARATOR

• Main Authors: KONO TAKASHI, AISAKA TAKASHI
• Format: Patent
• Language: Chinese; English
• Published: 16.08.2022
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The present invention relates to a method for manufacturing a separator for a fuel cell in which a layer having corrosion resistance and conductivity is formed on a stainless steel substrate, the method comprising: (i) a step for obtaining a stainless steel substrate having a passivation layer removed by removing a passivation layer on the surface of the stainless steel substrate; (ii) a step in which a corrosion-resistant and conductive layer is formed on the surface of the stainless steel substrate having the passivation layer removed, thereby obtaining a stainless steel substrate having a corrosion-resistant and conductive layer formed thereon; and (iii) a step in which the stainless steel substrate having a corrosion-resistant conductive layer formed thereon is annealed in a temperature range of 250 DEG C or more and less than 550 DEG C under oxygen-containing conditions. 本发明涉及分隔体的制造方法，是在不锈钢基材上成膜有具有耐蚀性和导电性的层的燃料电池用分隔体的制造方法，包括：(i)将不锈钢基材表面上的钝化层去除，得到钝化层去除不锈钢基材的工序；(ii)在钝化层去除不锈钢基材表面上将具有耐蚀性和导电性的层成膜，得到耐蚀性导电层成膜不锈钢