Novel Anodic Catalyst Support for Direct Methanol Fuel Cell: Characterizations and Single-Cell Performances

Table 6 Data extraction from the Tafel plot

Type of catalyst	Tafel slope, b_a (mV/dec)	Ionic exchange current density, j_o (mA/cm²)	Standard deviation, R²
PtRu/TiO₂-CNF	214	0.501	0.995
PtRu/CNF	217	0.112	0.997
PtRu/C	217	0.112	0.996
PtRu/TiO₂	253	0.046	0.995