A 3D neutral chalcogenide framework built from a supertetrahedral T3 cluster and a metal complex for the electrocatalytic oxygen reduction reaction.

Herein we report a new 3D neutral chalcogenide framework constructed by using a supertetrahedral T3 cluster ([MnGaSnS]) as the building unit and a metal complex ([Mn(dach)], dach = 1,2-diaminocyclohexane) as the linker. Significantly, the obtained material exhibits high-efficiency electrocatalytic oxygen reduction activity with quasi-four-electron transfer and a small Tafel slope, much better than that of commercial Pt/C (10 wt%).