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Rapid depletion of non-renewable sources has made us look into possible green energy alternatives to meet energy challenges. Electrocatalytic reactions involving oxygen evolution reaction (OER) and oxygen reduction reaction (ORR) play crucial roles in assisting the derivation of clean forms of energy. Here, we demonstrate that few layers of the manganese oxide: hausmannitene (atomically thin two dimensional (2D-Mn₃O₄) can be exfoliated from its bulk form hausmannite (Mn₃O₄). Most significantly, the hausmannitene exhibits catalytic activity towards oxygen reduction and evolution reactions. The hausmannitene has enhanced Mn(III) ions (∼65%) compared to its parent structure hausmannite (∼31%). The Mn(III) ions in a distorted lattice show the highest catalytic activity towards OER performance with the oxygen electrode activity (ΔE) of 1.08 eV for hausmannitene. The density functional theory (DFT …