Selective synthesis of single layer translucent cobalt hydroxide for the efficient oxygen evolution reaction.

We report the advancement of the catalytic activity for the oxygen evolution reaction using an orthogonal procedure to fabricate an α cobalt hydroxide hydrotalcite-like compound using rock salt and its transformation to a translucent single-layer cobalt hydroxide nanosheet by liquid phase exfoliation. The exfoliated single-layer nanosheet exhibited a remarkable mass activity of 153.8 A g-1 and a turn over frequency of 1.46 × 10-1 s-1 at 350 mV overpotential.