Table 5 Overpotentials at 200 mA·dm−2 and exchange current density of the obtained electrodes.

From: Electrochemical Preparation and Post-treatment of Composite Porous Foam NiZn Alloy Electrodes with High Activity for Hydrogen Evolution

Electrodes

Foam Ni substrate

Foam NiZn + 600 °C

Foam NiZn + HCl

η200/mV

582

360

306

j0/(A·cm−2)

9.2 × 10−4

10.1 × 10−2

2.3 × 10−2

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