Trace Al/Ti co-doping in P2-type layered oxide cathodes toward ultra-stable and fast sodium-ion storage.
Layered oxide cathodes for sodium-ion batteries (SIBs) often suffer from structural degradation and increased interfacial resistance during prolonged cycling. In this research, an Al/Ti dual-doping synergistic strategy is employed on P2-type Na0.8Al0.02Ti0.02(Ni0.4Mn0.6)0.96O2 (NNATM) to simultaneously regulate both th...