Abstract: A method for preparing a Li4NbxTi5-xO12/C nanocomposite as anode material for lithium-ion batteries is disclosed, which includes the following steps: (a) obtaining a mixture of a lithium salt, niobium pentaoxide, titanium dioxide (TiO2), and a carbon source in a selected stoichiometric ratio; (b) mixing the mixture in a dispersant to produce a slurry; (c) drying the slurry to produce a dried mixture; (d) treating the dried mixture under a protective atmosphere, according to a heating program to produce the Li4NbxTi5-xO12/C nanocomposite, wherein the heating program comprises: calcining the dried mixture at 600° C. for 2-6 hours, heating it at a rate of 2-20° C. per minute to 950-980° C., cooling it by natural cooling to 800-850° C., maintaining the temperature at 800-850° C. for 16 hours, and cooling it by natural cooling to room temperature.

Abstract: A cathode active material represented by the formula, LiFexPO4/C, wherein 0.9?x<1, preferably 0.96?x<1, which was obtained from carbon pre-coated off-stoichiometric FexPO4, wherein 0.9?x<1, preferably 0.96?x<1. The materials may be double-carbon-coated particles obtained by carbon coating a mixture of a lithium component and FexPO4/C sub-particles, wherein the FexPO4/C sub-particles may be obtained by carbon coating FexPO4.

Abstract: A high-voltage lithium-ion battery cathode material includes LiNi0.5-xMn1.5MxO4 (0?x?0.2, M?Mg, Zn, Co. Cu, Fe, Ti, Zr, Ru, and Cr), which is coated with a coating material, which may be a carbon coating material, a metal phosphate coating material, or a combination thereof. The carbon coating material may be acetylene black, graphene oxide, conductive graphite, glucose, sucrose, starch, lactose, maltose, phenolic resins, polyvinyl alcohol, or a combination thereof, and the metal phosphate coating material may be FePO4, LiFePO4, CoPO4, Mn3(PO4)2, LnPO4. The coating material may account for 1 to 10% (wt %). Products of the present invention have high reversible capacities. Synthesis methods are disclosed that are simple and controllable, can produce uniform coating, and are suitable for industrial scale production.

Abstract: A cathode active material represented by the formula, LiFexPO4/C, wherein 0.9?x<1, preferably 0.96?x<1, which was obtained from carbon pre-coated off-stoichiometric FexPO4, wherein 0.9?x<1, preferably 0.96?x<1. The materials may be double-carbon-coated particles obtained by carbon coating a mixture of a lithium component and FexPO4/C sub-particles, wherein the FexPO4/C sub-particles may be obtained by carbon coating FexPO4.

Abstract: A method for preparing a Li4NbxTi5-xO12/C nanocomposite as anode material for lithium-ion batteries is disclosed, which includes the following steps: (a) obtaining a mixture of a lithium salt, niobium pentaoxide, titanium dioxide (TiO2), and a carbon source in a selected stoichiometric ratio; (b) mixing the mixture in a dispersant to produce a slurry; (c) drying the slurry to produce a dried mixture; (d) treating the dried mixture under a protective atmosphere, according to a heating program to produce the Li4NbxTi5-xO12/C nanocomposite, wherein the heating program comprises: calcining the dried mixture at 600° C. for 2-6 hours, heating it at a rate of 2-20° C. per minute to 950-980° C., cooling it by natural cooling to 800-850° C., maintaining the temperature at 800-850° C. for 16 hours, and cooling it by natural cooling to room temperature.