Method for modifying the surface of metal polar plate and polar plate for fuel cell

• Main Authors: HUANG, CHING-YING, HSIEH, HO-YEN, WANG, WEN-LIN
• Format: Patent
• Language: Chinese; English
• Published: 01.03.2014
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE

The disclosure provides a method for modifying the surface of metal polar plate comprising: providing a metallic substrate having a flow field structure and an adhesive layer formed thereon; dispensing expansive graphite powders onto the adhesive layer, and press-fitting the expansive graphite powders and the metallic substrate with a mold to form a graphite layer on the metallic substrate, wherein the mold is structurally corresponding to the flow field structure of the metallic substrate. The disclosure further provides a polar plate for fuel cell.