<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>The nanocomposite La<sub>0.8</sub>Sr<sub>0.2</sub>MnO<sub>3</sub>/Bi<sub>1.6 </sub>Er<sub>0.4</sub>O<sub>3</sub> cathode is obtained by an in situ co‐assembly process through uniquely conjugated reverse‐strike coprecipitation and glycine‐nitrate combustion at extremely low temperature (<300 °C).</p> </abstract>