無電鍍於AISI 304不鏽鋼雙極板腐蝕特性之研究

本研究以AISI 304 不鏽鋼為基材利用無電鍍鎳、金、銀做為質子交換膜燃料電池之金屬雙極板，並分析在質子交換膜燃料電池(PEMFC)模擬環境下的腐蝕行為。本研究之主要目的是為提供質子交換膜燃料電池之金屬雙極板研發的重要資料以及更深入了解無電鍍層的電化學腐蝕特性。實驗結果顯示，在動電位腐蝕極化實驗中無電鍍銀層於AISI 304 不鏽鋼呈現出最佳的抗腐蝕效果(腐蝕電流密度1.876nA/cm2)。此外，無電鍍鎳、無電鍍金及無電鍍銀於AISI 304 不鏽鋼其電阻率分別為、以及，互相比較後可發現無電鍍銀層於AISI 304 不鏽鋼呈現出最佳的導電效果。關鍵字:質子交換膜燃料電池、雙極板、腐蝕、導電性

關鍵字

質子交換膜燃料電池、雙極板、腐蝕、導電性

並列摘要

In this study, the corrosion behavior of electroless Ni, Au and Ag plating on AISI 304 stainless steel is investigated in simulated polymer electrolyte membrane fuel cell (PEMFC) environment. The main purposes are to offer fundamental information for the development of metal bipolar plates in PEMFC, and to obtain a deeper understanding of the electrochemical corrosion characteristics for electroless plating systems. This study addresses the corrosion resistance characteristics of electroless plating on AISI 304 stainless steel for PEMFC bipolar plate applications. Corrosion properties of this material were studied by using potentiodynamic and potentiostatic tests. Electroless Ag plating on AISI 304 stainless steel showed excellent corrosion resistance (corrosion current density, 1.876nA/cm2) in anodic and cathodic atmospheres under potentiostatic conditions. Moreover, electroless Ag plating on AISI 304 stainless steel showed lower the interfacial contact resistance of as compared to Ni and Au electroless plated on AISI 304 stainless steel, and respectively. Keyword: PEMFC, bipolar plate, corrosion, conductivity