Dissolution of Platinum in Presence of Chloride Traces

摘要: Abstract One of the main issues on way to a commercial use fuel cells is durability cell compartments, in particular electrocatalysts. Chloride impurities, originating from airborne salts or synthesis residues, can have severe effects degradation general. The quantitative impact dissolution Pt, which most common electrocatalyst material polymer electrolyte membrane cells, and mechanism are still not fully understood. In current work, potentiodynamic potentiostatic measurements platinum acidic electrolytes containing chlorides range 1 1000 μM were carried out utilizing scanning flow (SFC) coupled an inductively plasma mass spectrometer (ICP-MS). We show that during accelerates with increase amount chlorides, as expected. Similarly Cl − -free electrolytes, predominantly transient process taking place oxide formation reduction. While thus general remains same reported before absence evidence for additional processes reduction observed. This leads variation ratio between anodic cathodic when present. Based experimental results tentative proposed.