Manganese(II,III) oxide Manganese(II,III) oxide Manganese(II,III) oxide is the chemical compound with formula MnO. Manganese is present in two oxidation states +2 and +3 and the formula is sometimes written as MnO.MnO. MnO is found in nature as the mineral hausmannite. MnO formed when any manganese oxide is heated in air above 1000 °C. Considerable research has centred on producing nanocrystalline MnO and various syntheses that involve oxidation of Mn or reduction of Mn. MnO has been found to act as a catalyst for a range of reactions e.g. the oxidation of methane and carbon monoxide; the decomposition of NO, the reduction of
Lithium ion manganese oxide battery made of alternating layers of lithium ions and lithium and manganese ions in a 1:2 ratio, similar to the layered structure of . Although is electrochemically inactive, it can be charged to a high potential (4.5 V v.s Li) in order to undergo lithiation/de-lithiation. However, extracting lithium from at such a high potential results in loss of oxygen from the electrode surface which leads to poor capacity and cycling stability. One of the main research efforts in the field of lithium-manganese oxide electrodes for lithium-ion batteries involves developing composite electrodes using structurally integrated layered and spinel , with a chemical