Lithium batteries are rechargeable batteries that use graphite or other carbon materials as the negative electrode and lithium-containing compounds as the positive electrode. It is a kind of battery that uses lithium metal or lithium alloy as positive/negative electrode material and uses a non-aqueous electrolyte solution.
Cylindrical lithium-ion battery, its model name is generally 5 digits, the first two digits are the diameter of the battery, the middle two digits are the height of the battery, and the last digit 0 represents a cylindrical shape, in millimeters.
Square lithium battery usually refers to aluminum shell or steel shell square lithium battery, which is widely used in exploration and mapping, medical equipment, and portable testing equipment.
Most of the early lithium-ion batteries had steel casings. Due to the heavy weight of the steel shell and poor safety, but the strong stability of the steel, many manufacturers optimized the design structure through safety valves, PTC and other devices in the later period, which greatly increased its safety performance. And some directly replace the steel shell, using an aluminum shell and soft package, such as the current mobile phone battery.
Aluminum-shell lithium-ion batteries are slightly better than steel-shell lithium-ion batteries due to their lighter weight and safety.
Due to its lightweight, low cost of mold opening and high safety, flexible packaging lithium-ion batteries are gradually expanding their market share.
There are currently four types of cathode materials used in lithium-ion batteries:
The liquid lithium-ion battery uses a liquid electrolyte, and the electrolyte is an organic solvent + lithium salt.
The polymer lithium-ion battery is replaced by a solid polymer electrolyte. This polymer can be "dry" or "colloidal". At present, most of the polymer colloidal electrolytes are used. The matrix of the polymer is mainly HFP-PVDF, PEO, PAN and PMMA.
All-solid-state lithium battery is a lithium battery in which the electrodes and electrolyte materials used in the working temperature range are solid and do not contain any liquid components, so the full name is "all-solid-state electrolyte lithium battery".
For more information about Lithium Batteries, please do not hesitate to contact RHY battery expert.