The invention discloses a method for manufacturing a
tin-stibium-
nickel alloy cathode material of a
lithium ion battery, comprising the following steps of: taking a carbon
fiber cloth as a substrate; and adopting an electrodeposition process to plate
tin-stibium-
nickel alloys on the substrate, wherein a
tin-stibium-
nickel electrodeposition solution comprises 0.1-0.5 mol / L of soluble tin salt, 0.1-0.5 mol / L of soluble stibium salt, 0.1-0.5 mol / L of soluble
nickel salt, 0.08-0.12 mol / L of
ammonium salt, 0.08-0.12 mol / L of surface
active agent. The electrodeposition process is utilized to manufacture the tin-stibium-nickel alloys, and a
ternary alloy structure buffers
volume change of the
cathode material in the process of
lithium insertion / extraction. Double-
active components can insert / extract
lithium at different levels, thus improving the
insertion / extraction efficiency; and non-
active components are introduced to reduce the volume expansibility in the process of lithium
insertion / extraction. In addition, the carbon
fiber cloth has a lithium storage function, so that the flexibility of the carbon
fiber cloth also buffers the
volume change of the alloys on the substrate effectively. Therefore, the manufactured tin-stibium-nickel alloys can improve the capacity and cyclical stability of the
lithium ion battery. The method is simple in operation, can be carried out in water, is environmentally-friendly, and is in no need of high temperature and
high pressure as well as
inert gas protection. Performances can be controlled, and the thickness of an
alloy layer can be changed by changing electrodeposition
current density and time, thus regulating and controlling the weight or capacity of the material.