There is no change, the chemical equation is as follows:
Anodic reaction LiC6 - e-- = 6C + Li+
Cathodic reaction CoO2 + Li+ + e-- = LiCoO2
Battery reaction LiC6+ CoO2 = 6C + LiCoO2
So only the valency of Li changes in the whole process.
Lithium-ion battery: This is a secondary battery (rechargeable battery) that relies primarily on the movement of lithium ions between the positive and negative electrodes to function. During the charging and discharging process, Li+ intercalates and deintercalates between the two electrodes: during charging, Li+ is deintercalated from the positive electrode and integrated into the negative electrode through the electrolyte, and the electrode negative is in a lithium-rich state. ; during discharge, it is the opposite. Batteries generally use lithium-containing materials as electrodes and are representative of modern high-performance batteries.
Lithium-based batteries are divided into lithium batteries and lithium-ion batteries. Cell phones and laptops use lithium-ion batteries, commonly known as lithium batteries. However, true lithium batteries are rarely used in daily electronic products due to their high risk.
During the reaction of lithium-ion batteries, has the valence of carbon changed?
Lithium is the negative electrode and is oxidized.
Lithium batteries are a type of lithium metal battery or batteries in which lithium alloy is the negative electrode material and uses a non-aqueous electrolyte solution.
Use the following reaction: Li+MnO2=LiMnO2
The reaction that occurs at the lithium electrode, i.e. the negative electrode, is: Li-e-=Li+
(find the reaction equation of positive and negative electrode!!) There is a lithium battery that uses metallic lithium and graphite as electrode materials.
There is no change. The chemical equation is as follows. follows:
Anodic reaction LiC6 - e- - = 6C + Li+.
Cathode reaction CoO2 + Li+ + e-- = LiCoO2.
Reaction of the battery LiC6+ CoO2 = 6C + LiCoO2.
Thus, only the valence of Li changes in the whole process.
Detailed information:
(1) Positive electrode - the active material is generally lithium manganate or lithium cobalt oxide, the material of lithium nickel manganate - cobalt is generally used. commonly known as ternary) or ternary + a small amount of pure lithium manganate and lithium iron phosphate gradually disappear due to their large size, poor performance or high cost. THEConductor current collector uses electrolytic aluminum foil with a thickness of 10 to 20 microns.
(2) Separator - a specially formed polymer film with a microporous structure that allows lithium ions to pass freely, but electrons cannot pass through.
(3) NegativeThe extremely active material is graphite or carbon with a graphite structure. The conductive current collector uses electrolytic copper foil with a thickness of 7 to 15 microns.
(4) Organic electrolyte - a carbonate solvent in which lithium hexafluorophosphate is dissolved. For polymers, a gel electrolyte is used.
(5) Battery shell - divided into steel shell (square type rarely used), aluminum shell, nickel-plated iron shell (used for cylindrical batteries), aluminum-plastic film (soft packaging) , etc. , as well as the battery. The cap also has the positive and negative terminalses of the battery.
Baidu Encyclopedia - Lithium-ion battery
Lithium cobalt oxide battery electrode reaction formula
According to the total reaction 8Li+3SOCl2=6LiCl+ Li2SO3+2S
Negative electrode: 8Li - 8e =8Li+
Positive electrode 3SO2+ + 8e = SO32- + 2S
Lithium Cobalt Oxide Battery (LiCoO2 Battery) is a typical lithium ion battery, its electrode reaction formula can be expressed as:
At the positive electrode: LiCoO2 ?Li1-xCoO2+xLi++xe-; the negative electrode: xLi++xe- +6C?LixC6; The entire battery reaction equation can be expressed as: LiCoO2+xLi++xe-+6C?Li1-xCoO2+LixC6.
During discharge, lithium ions are released from the positive electrode material (LiCoO2) and transported to the negative electrode material (carbon) via the electrolyte ions, forming lithium metallic and graphitized carbon, and releasing electrons.