Single-atom Ce catalysts for rechargeable Zn–air batteries

The single-atom Ce 1 -NG catalyst demonstrated exceptional ORR performance with E 1/2 of 0.869 V and excellent OER activity with η 10 of 381 mV. The Ce 1 -NG-based ZAB supplied an open-circuit voltage of 1.55 V and a peak power density of 152 mW cm −2 .