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What Is The Definition Of Lithium Ion Battery
Aug 27, 2018

What is the definition of lithium ion battery?

Lithium-ion battery: It is a secondary battery (rechargeable battery) that relies on lithium ions to move between the positive and negative electrodes to work. During charging and discharging, Li+ intercalates and deintercalates between the two electrodes: when charging, Li+ is deintercalated from the positive electrode, and the electrolyte is embedded in the negative electrode, and the negative electrode is in a lithium-rich state;

Lithium batteries are classified into lithium batteries and lithium ion batteries. Both mobile phones and laptops use lithium-ion batteries, which are commonly referred to as lithium batteries. The battery is generally made of a material containing lithium as an electrode, and is a representative of modern high-performance batteries. True lithium batteries are rarely used in everyday electronics because of their high risk.

The lithium-ion battery was first developed by Sony Corporation of Japan in 1990. It is to insert lithium ions into carbon (petroleum coke and graphite) to form a negative electrode (lithium for lithium batteries or lithium alloys for conventional lithium batteries). The positive electrode material is commonly used for LixCoO2, LixNiO2, and LixMnO4, and LiPF6+diethylene carbonate (EC) + dimethyl carbonate (DMC) for the electrolyte.

Petroleum coke and graphite as anode materials are non-toxic and have sufficient resources. Lithium ions are embedded in carbon, which overcomes the high activity of lithium and solves the safety problems of traditional lithium batteries. The positive LixCoO2 can reach the charge and discharge performance and life. The higher the level, the lower the cost, and the overall performance of the lithium-ion battery is improved. It is expected that lithium-ion batteries will occupy a large market in the 21st century.

The reaction formula for charging and discharging lithium ion secondary batteries is LiCoO2+C=Li1-xCoO2+LixC 

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