Titanium and fluorine synergetic modification improves the electrochemical performance of Li(Ni0.8Co0.1Mn0.1)O2

Ti⁴⁺ and F⁻ co-dopants expand the lattice spacing of Ni-rich cathode materials and form ultra-thin rock salt phases on the surface of the cathode, thereby improving the electrochemical performance of lithium-ion batteries.