种高功率密度PEMFC电堆专用极板制造方法

• Format: Patent
• Language: Chinese
• Published: 21.11.2017
• Subjects: BASIC ELECTRIC ELEMENTS; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; 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; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE

本发明公开种高功率密度PEMFC电堆专用极板制造方法，包括如下步骤：将碳纤维短纤放入分散液中使用抄纸机抄造成0.3~0.5mm厚的碳纤维毡；将热固性树脂、碳粉或石墨粉、造孔剂、增强剂DH-4按重量份数混合搅拌配置成浸渍液，将碳纤维毡放置在浸渍液中10~15min，真空预固化；使用裁切设备将浸渍碳纤维毡裁切成片；模压形成面具有气体流场面、面具有平板面的极板；高温石墨化处理；放入PTFE溶液中浸泡，沥干后在进行灼烧疏水处理；在极板的平板面上涂布导电缓冲层。本发明采用新配方、工艺制备的专用极板，表面压制出流场，代替传统的双极板和气体扩散层，即可对进入燃料电池电堆内部的气体进行分布，无需设置双极板，具有轻质、紧凑、高效的优点。