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Chemical reaction equation of lithium iron phosphate battery

by:dcfpower     2021-03-28
u003cpu003e The positive electrode of a lithium ion battery is a compound containing metal lithium, generally lithium iron phosphate (such as lithium iron phosphate LiFePO4, lithium cobalt phosphate LiCoO2, etc.), the negative electrode is graphite or carbon (generally graphite is generally used). Use organic solvents as electrolytes. When the battery is charged, lithium ions are decomposed on the positive electrode, and the lithium ions enter the negative electrode of the battery through the electrolyte and are embedded in the micropores of the carbon layer of the negative electrode. During the use of the battery (equivalent to discharge), the lithium ions embedded in the pores of the negative electrode move back to the positive electrode. The more lithium ions returning to the positive electrode, the higher the discharge capacity. The battery capacity we usually refer to is the discharge capacity. In this way, during the process of battery charging and discharging, lithium ions continuously run back and forth between the positive and negative electrodes, so lithium-ion batteries are also called rocking chair batteries. u003c/pu003eu003cpu003eu003c/pu003eu003cpu003eThe electrochemical reaction equation of a lithium iron phosphate battery is shown below:u003c/pu003eu003cpu003eAnode reaction: LiFePO4 ⇔ Li1-xFePO4 + xLi++ xe- ;u003c/pu003eu003cpu003e pu003eu003cpu003eNegative reaction: xLi+ +xe- +6C⇔LixC6;u003c/pu003eu003cpu003eTotal reaction formula: LiFePO4+6xC⇔Li1-xFePO4+LixC6. u003c/pu003eu003cpu003eu003c/pu003eu003c/pu003e
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