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Types of Lithium-ion

Types of Lithium-ion

Types of Lithium-ion-lithium-ion type is named for its active substance; Sounds are either full or short written by their chemical symbols. A series of letters and numbers together is hard to remember and even hard to pronounce, and battery chemistries are characterized by short letters.
For example, lithium cobalt oxide, among the most common Li-ions, chemical symbols LiCoO2 and short name LCO. For simplification reasons, the Li-Cobalt form can be used for this battery. Cobalt is the main active ingredient that gives this battery character. Other Li-ion chemistries are named after the same small name. This category is the most common Li-ion six list. The average ratio of all the texts while writing.

Lithium Cobalt Oxide(LiCoO2)

Its high specific energy makes Li-cobalt the popular choice for mobile phones, laptops and digital cameras. The battery consists of a cobalt oxide cathode and a graphite carbon anode. The cathode has a layered structure and during discharge, lithium ions move from the anode to the cathode. The flow reverses on charge. The drawback of Li-cobalt is a relatively short life span, low thermal stability and limited load capabilities (specific power).

Lithium Cobalt Oxide

Cathode has a layered structure; Lithium ions are removed from the anode to the cathode during discharge; Flow charge is anode to cathode.

Li-cobalt weakness is relatively short lifetime, low thermal stability and limited load capacity (specific power). Like other cobalt-blended Li-ion, Li-cobalt has a graphite anode that limits the cycle life by a changing solid electrolyte interface (SEI), thickening on the anode and lithium plating while fast charging and charging at low temperature. Newer systems include nickel, manganese and/or aluminum to improve longevity, loading capabilities and cost.
Li-cobalt should not be charged and discharged at a current higher than its C-rating. This means that an 18650 cell with 2,400 mAh can only be charged and discharged at 2,400 mA. Forcing a fast charge or applying a load higher than 2,400 mA causes overheating and undue stress. For optimal fast charge, the manufacturer recommends a C-rate of 0.8C or about 2,000 mA. (See BU-402: What is C-rate). The mandatory battery protection circuit limits the charge and discharge rate to a safe level of about 1C for the Energy Cell.

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Li-cobalt excels on high specific strengths but only provides moderate performance specific strength, safety and life span.

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Ramen Bairagee

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