What is the charge and discharge principle of Lithium Iron Phosphate Batteries?

To the left of Lithium Iron Phosphate Batteries is a positive electrode of LiFePO4 material of olivine structure, connected to the battery. On the right is a battery negative electrode composed of carbon (graphite), connected by copper foil to the negative electrode of the battery. In the middle is the diaphragm of the polymer which separates the positive from the negative, the lithium ions can pass and the electrons cannot pass through the diaphragm. The Lithium Iron Phosphate Batteries is charged with electrolyte enclosed by a metal enclosure. What is the charge and discharge principle of Lithium Iron Phosphate Batteries?

Here is the content list:

•Charging principle

•Discharge principle

Charging principle

The charge and discharge reaction of Lithium Iron Phosphate Batteries is between phases LiFePO4 and FePO4. During the charging process, LiFePO4 gradually separated from lithium ions to form FePO4, During the Lithium Iron Phosphate Batteries charging process, lithium ions embedded in FePO4 to form LiFePO4. battery charging, lithium ions migrate from lithium iron phosphate crystal to the crystal surface, under the action of electric field force, into the electrolyte, and then through the diaphragm, and then through the electrolyte to the surface of the graphite crystal, and then embedded into the graphite lattice. At the same time, the electron conductor flows to the aluminum foil collecting electrode of the cathode, through the electrode ear, battery positive electrode column, an external circuit, negative electrode column, negative electrode ear to the copper foil collecting fluid of the battery negative electrode, and then flows to the graphite negative electrode through the conductor, so that the charge of the negative electrode reaches to balance. After lithium ions are removed from lithium iron phosphate, lithium iron phosphate is converted into iron phosphate. This charges the Lithium Iron Phosphate Batteries.

Discharge principle

When the Lithium Iron Phosphate Batteries is discharged, lithium ions are removed from the graphite crystal, enter the electrolyte, then move through the membrane, migrate via the electrolyte to the surface of the lithium iron phosphate crystal, and then embedded in the lattice of lithium iron phosphate. [2] At the same time, the electron conductor flows to the negative copper foil collector electrode, through the pole ear, battery negative pole column, positive pole column, positive pole column, positive pole ear to the aluminum foil collector fluid of the battery cathode, and then to the lithium iron phosphate cathode, so that the charge of the positive electrode reaches to balance. After lithium ions are embedded into iron phosphate crystals, iron phosphate is converted into lithium iron phosphate. This completes the Lithium Iron Phosphate Batteries discharge process.

Lithium Iron Phosphate Batteries have the advantages of high working voltage, high energy density, long cycle life, good safety performance, small self-discharge rate, and no memory effect. Champion Power Tech Co., Limited conducts many tests of Lithium Iron Phosphate Batteries，and the quality qualification rate is guaranteed. If you need Lithium Iron Phosphate Batteries, you can consider our cost-effective products. Champion Power Tech Co., Limited materials are non-toxic and tasteless, perfect after-sales service, you can have no worries.