Strain‐rich high‐entropy perovskite oxide of (La<sub>0.8</sub>Sr<sub>0.2</sub>)(Mn<sub>0.2</sub>Fe<sub>0.2</sub>Cr<sub>0.2</sub>Co<sub>0.2</sub>Ni<sub>0.2</sub>)O<sub>3</sub> for durable and effective catalysis of oxygen redox reactions in lithium‐oxygen battery
Battery energy