Upcycling spent polycrystal LiNi 1/3 Co 1/3 Mn 1/3 O 2 cathodes into single-crystal Ni-rich materials via the “four-in-one” upcycling regeneration strategy

The “four-in-one” upgraded regeneration strategy achieved the directional regeneration of waste low-nickel polycrystalline NCM111 to the molybdenum-gradient-doped nickel-rich single crystal NCM811.