Lithium-ion battery

摘要

A lithium-ion battery includes a positive electrode, a negative electrode, and a battery case. The positive electrode includes a positive current collector, a first material of the form Li1−xMO2, where M is a metal, and a second material including carbon. The negative electrode includes a negative current collector, a third material including a lithium titanate material, and a fourth material including carbon. The battery case includes titanium and at least partially surrounds the positive and negative electrodes.

主权项

1. A lithium-ion battery comprising:
a positive electrode comprising:
a positive current collector;a first material comprising LiCoO2, LiNiO2, or LiMnO2, the first material being an active material; anda second material comprising carbon, the second material being conductive; and a negative electrode comprising:
a negative current collector;a third material comprising a lithium titanate material, the third material being another active material; anda fourth material comprising carbon, the fourth material being conductive; a liquid electrolyte; and a battery case comprising titanium, at least partially surrounding the positive and negative electrodes; wherein the positive electrode and the negative electrode are wound electrodes; and wherein a charging and discharging capacity of the positive electrode at a zero voltage crossing potential is below a corrosion potential of the negative current collector and above a decomposition potential of the first material.