Synergism between polyurethane and polydopamine in the synthesis of Ni-Fe alloy monoliths

Herein, we report the first synthesis of a light-weight macroporous 3-D alloy monolith of Ni-Fe/C using synergism between poly-dopamine (pDA) and polyurethane (pU); in situ formed polyurethane (pU) enables efficient mixing of pDA (carbon source) and Ni-FeOx resulting in Ni-Fe alloy monoliths at a temperature as low as similar to 600 degrees C. The monolithic Ni-Fe/C exhibits enhanced oxygen evolution activity.