Introduce the chemical reaction mechanism of lithium battery and lithium battery characteristics

Source: 2020 - 04 - 14 18:52 hits: what time is the lithium-ion batteries, lithium-ion batteries of the chemical reaction mechanism and the characteristics of lithium battery what is lithium-ion batteries, lithium ion battery is lithium ion insertion and disconnect between the positive and negative secondary battery. • The positive use of lithium oxide LixMO2 ( M =有限公司/ Ni / Mn) 。 • Carbon cathode with lithium compound LixC6 between the layers. • The electrolyte is a kind of organic compounds, and lithium LiPF6 or LiAsF6 dissolved. • , in the process of charging and discharging lithium ion insert and pull back and forth between the positive and negative, known as' rocking-chair batteries. The electrochemical reaction mechanism of lithium ion battery positive electrode reaction: LiCoO2 & rarr; li1 - xcoo2 + xLi+ + xe- Negative response: C + + + xLi xe - → LixC overall reaction: LiCoO2 + C↔ Li1 - XCoO2 + LixC theoretically the characteristics of the lithium ion batteries, lithium ion batteries have obvious advantages than traditional galvanic cell: a, high voltage, three times the ordinary nickel cadmium, nickel metal hydride of B. High energy density, better than ni - CD and 3 times higher than ni - Mh 2 times higher c, wide working temperature range, can generally be in - 20 ℃ ~ 60 ℃ work stable discharge, cyclic performance is good, no memory effect E. Low self-discharge rate, less than 10%, long storage time, long service life etc. F. Environmental protection, no pollution. Lithium ion power battery features high capacity, internal resistance is small, very thin & bull; Charge and discharge performance is good, than the big & bull power; Pulse good performance & bull; Higher safety performance requirements of the classification of lithium ion battery & bull; Shell and electrolyte classification: ( 1) Liquid aluminum package lithium-ion battery ( 2) Liquid steel shell of lithium ion battery ( 3) Liquid flexible packaging lithium ion battery, 4) Colloid polymer lithium ion battery ( 5) Solid polymer lithium ion battery & bull; Through shape: square, cylindrical, buttons, CARDS, alien name square lithium-ion batteries: W: cell width H: cell height: thickness of T cells, such as: 18650 battery 18 mm in diameter, height 650 mm063048 s battery: about 6 mm thickness, the width of the 30 mm, height 48 mm batteries: 063048 thickness of about 6 mm, 30 mm width, height 48 mm