Lithium batteries are widely used in hydropower, firepower, wind power, solar power stations and other energy storage power systems, as well as electric tools, electric bicycles, electric motorcycles, electric vehicles, military equipment, aerospace and other fields. At present, lithium batteries have been gradually extended to electric bicycles, electric vehicles and other fields.
1, lithium battery:
"Lithium battery" is a battery with lithium metal or lithium alloy as negative electrode material and non-aqueous electrolyte. 19 12 lithium metal battery was first proposed and studied by Gilbert N. Lewis. In 1970s, M. S. Whittingham proposed and began to study lithium-ion batteries. Because the chemical characteristics of lithium metal are very active, the processing, storage and use of lithium metal have very high requirements for the environment. So lithium batteries have been useless for a long time. With the development of science and technology, lithium batteries have become the mainstream.
2. Material: 1), carbon anode material
The cathode materials actually used in lithium ion batteries are basically carbon materials, such as artificial graphite, natural graphite, mesophase carbon microspheres, petroleum coke, carbon fiber, pyrolytic resin carbon and so on.
2) Tin-based anode material
Tin-based anode materials can be divided into tin oxide and tin-based composite oxide. Oxides refer to oxides of tin in various valence states. There are no commercial products.
3), nitride
4), alloy
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.
5) Nano-scale
Carbon nanotubes, nano-alloy materials.
6) Nano-oxide
At present, according to the latest market development trend of lithium battery new energy industry in 2009, many companies have begun to add nano-titanium oxide and nano-silicon oxide into traditional graphite, tin oxide and carbon nanotubes, which greatly improves the charging and discharging capacity and charging and discharging times of lithium batteries.