<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>Na<sub>3</sub>Ni<sub>2</sub>SbO<sub>6</sub> is prepared by solid state reaction of stoichiometric amounts of Na<sub>2</sub>CO<sub>3</sub>, Sb<sub>2</sub>O<sub>3</sub>, and NiO (900 °C, 12 h) as a cathode for Na‐ion batteries.</p> </abstract>