LiNi1-x-yCoxMnyO2 can be redesigned to double-shelled structure, which does not change total composition compared with some reported core-shell materials. In this paper, the spherical double-shelled Li[(Ni0.8Co0.1Mn0.1)(2/7)(Ni1/3Co1/3Mn1/3)(3/14)(Ni0.4Co0.2Mn0.4)(1/2)]O-2 with total composition of LiNi0.5Co0.2Mn0.3O2 was synthesized via a coprecipitation route for the first time. The double-shelled material displayed higher capacity, superior cycling performance, and thermal stability than the non-core-shell LiNi0.5Co0.2Mn0.3O2 material.