A high entropy O3-Na1.0Li0.1Ni0.3Fe0.1Mn0.25Ti0.25O2 cathode with reversible phase transitions and superior electrochemical performances for sodium-ion batteries

A high-entropy oxide cathode-Na 1.0 Li 0.1 Ni 0.3 Fe 0.1 Mn 0.25 Ti 0.25 O 2 was developed featuring Li/Ti co-substitution that showcases highly reversible phase transitions, enhanced Na + -ion diffusivity and superior long-term cycling performances.