Lithium battery carbon cathode capable of preventing over-discharging

[0035] Embodiment one

[0036] Mix graphite, lithium titanate, Super P, CMC, and SBR according to the mass ratio of 90:5:2:1.0:2.0, dissolve in deionized water, stir evenly to make negative electrode slurry, and then use 90g / m on one side 2 coated on both sides of the copper foil, dried in vacuum at 85 degrees Celsius for 10 hours, then rolled and cut to form a carbon negative electrode.

[0037] Embodiment two

[0038] Mix mesophase carbon microspheres, lithium titanate, Super P, CMC, and SBR according to the mass ratio of 90:5:2:1.0:2.0, dissolve them in deionized water, stir evenly to make negative electrode slurry, and then Surface 90g / m 2 coated on both sides of the copper foil, dried in vacuum at 85 degrees Celsius for 10 hours, then rolled and cut to form a carbon negative electrode.

[0051] Embodiment three

[0052] The lithium battery carbon negative electrode of the discharge of the present embodiment includes a current collector, and the two sides of the current collector are coated with a vacuum-dried negative electrode slurry layer, and the negative electrode slurry layer is composed of the following components by weight: 85 parts of carbon active material , 1 part of lithium titanate, 0.5 part of conductive agent and 0.5 part of binder.

[0053] The carbon active material is one or a combination of graphite, mesocarbon microspheres, soft carbon, and hard carbon.

[0054]The conductive agent is one or a combination of nano-carbon powder (Super P), carbon nanotube (CNT), vapor-phase deposited carbon fiber (VGCF), and graphene.

[0055] The binder is one or a combination of styrene-butadiene rubber (SBR), sodium carboxyhydroxy cellulose (CMC), and polyvinylidene fluoride (PVDF).