Spin Symmetry Breaking‐induced Hubbard Gap Near‐Closure in N‐coordinated MnO2 for Enhanced Aqueous Zinc‐Ion Battery Performance

Transition metal oxides (TMOs) are promising cathode materials for aqueous zinc ion batteries (ZIBs), however, their performance is hindered by a substantial Hubbard gap, which limits electron transfer and battery cyclability. Addressing this, we introduce a heteroatom coordination approach, using triethanolamine to induce axial N coordination on Mn centers in MnO