Periodic law-guided design of highly stable O3-type layered oxide cathodes for practical sodium-ion batteries

material exhibited remarkable moisture stability, maintaining 85% of its capacity after 1000 cycles at 5C in 2.0-4.0 V. It also exhibited reversible phase transitions at voltages up to 4.3 V, with no oxygen release observed even when charged to 4.5 V. Furthermore, it exhibited remarkable high-temperature stability in half-cell testing and excellent cycling performance in full-cell evaluations. These results are very helpful for designing high-performance SIB cathodes that can withstand a variety of operating circumstances and ensuring structural stability.