Anode material: mostly use graphite. New research has found that titanate may be a better material. Negative reaction: lithium ion insertion during charging, lithium ion disconnection during discharge. When charging: xLi++ xe-+ 6C → LixC6 discharged: LixC6→ xLi++ xe-+ 6C
It is roughly divided into the following types:
The first is the carbon anode material: the anode material actually used for lithium-ion batteries is basically carbon material, such as artificial graphite, natural graphite, intermediate carbon microspheres, petroleum coke, carbon fiber, pyrolysis resin carbon, etc.
The second is the tin-based anode material: the tin-based anode material can be divided into two types: tin oxide and tin composite oxide. Oxides are oxides of various valence forms of metallic tin. There is no commercial product.
The third is a lithium-containing transition metal nitride anode material that is not commercially available.
The fourth is alloy anode materials: including tin-based alloys, silicon-based alloys, germanium-based alloys, aluminum-based alloys, antimony-based alloys, magnesium-based alloys and other alloys, there are no commercial products.
The fifth is nanoscale anode materials: nano-carbon tubes, nano-alloy materials.
The sixth nanomaterial is a nano-oxide material: According to the latest trend in the market development of the lithium battery new energy industry in 2009, many companies have begun to use nano-titanium oxide and nano-silica to add in the previous traditional graphite, tin oxide, nano-carbon tube, greatly improving the charge and discharge of lithium batteries and the number of charge-discharge times.