Synergism between polyurethane and polydopamine in the synthesis of Ni–Fe alloy monoliths†
Abstract
Herein, we report the first synthesis of a light-weight macroporous 3-D alloy monolith of Ni–Fe/C using synergism between polydopamine (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 ∼600 °C. The monolithic Ni–Fe/C exhibits enhanced oxygen evolution activity.