Table 2 Electrochemical characterization, including Electrochemical surface areas (ECSA), the onset potential (E0) half-wave potential (E(1⁄2)), diffusion-limiting current density (J), of catalysts before and after accelerated stress test (AST).
Catalysts | Before AST | After AST | |||||||
|---|---|---|---|---|---|---|---|---|---|
ECSA (m2/g) | E0 (V) | E1/2 (V) | J (mA/cm2) | ECSA (m2/g) | E0 (V) | E1/2 (V) | J (mA/cm2) | ||
0.2%Ce-Biomag-Pt/CB | 17.14 | 0.85 | 0.64 | -5.36 | 12.84 | 0.85 | 0.60 | -5.03 | |
Biomag-Pt/CB | 15.38 | 0.85 | 0.64 | -4.69 | 4.76 | 0.85 | 0.60 | -4.30 | |
Pt/CB | 14.07 | 0.81 | 0.60 | -5.40 | 4.73 | 0.76 | 0.50 | -5.01 | |