The basic anatomy of a lithium-ion battery is straightforward. The anode is usually made from graphite. The cathode (positive battery terminal) is often made from a metal oxide (e.g., lithium cobalt oxide, lithium iron phosphate, or lithium manganese oxide).
Demand of fast-discharge rated energy storage sources for Electrical Vehicle (EV), Hybrid Electrical Vehicle HEV) or portable power tools have driven the commercial development of Lithium Iron Phosphate (LiFePO4) batteries. The traditional LiFePO4 battery systems usually require high voltages or large capacities.
As lithium ions are removed during the charging process, it forms a lithium-depleted iron phosphate (FP) zone, but in between there is a solid solution zone (SSZ, shown in dark blue-green) containing some randomly distributed lithium atoms, unlike the orderly array of lithium atoms in the original crystalline material (light blue).
In LiFePO4 batteries, the iron and phosphate ions form grids that loosely trap the lithium ions as shown in Figure 2. During the charging of the cell, these loosely trapped lithium ions easily get pulled to the negative electrode through the membrane in the middle.
Schematic of the Lithium-ion battery. Lithium-ion batteries (LIBs) are being intensively studied and universally used as power sources for electric vehicle (EV) applications.
1. Introduction PS5120E/ PS5120ES lithium iron phosphate battery is one of new energy storage products developed and produced by manufacture, it can be used to support reliable power for various types of equipment and systems.