Yttrium doping stabilizes the structure of Ni3(NO3)2(OH)4 cathodes for application in advanced Ni–Zn batteries

The Y-Ni 3 (NO 3 ) 2 (OH) 4 material is used for zinc-based alkaline batteries. The constructed Zn-Ni batteries offer a high energy density (379 Wh kg −1 ) with a power density of 1749 W kg −1 .