Sodium-air batteries are appealing energy storage systems due to high theoretical energy density and high sodium abundance. But they are plagued with low efficiency and large overpotential. Here, authors report long-term reversibility over 1000 cycles with 99% efficiency using a cascade electrocatalysis strategy based on Na[Li1/3Ru2/3]O2 electrodes.
- Xue Sun
- Haitao Li
- Jiajun Wang
