Overcoming the interfacial challenges of Ni-rich layered oxide cathodes for all-solid-state batteries through an ultrathin and amorphous Al 2 O 3 coating

An ultrathin and amorphous Al 2 O 3 coating on Ni-rich layered oxide cathodes in all-solid-state batteries significantly enhanced the cycle life by mitigating interfacial degradation while maintaining Li-ion conductivity.