Lifepo4 battery manufacturer Specialized in Energy Storage Battery since 2009.

Structural characteristics of LiFePO4 cathode material for lithium batteries

by:dcfpower     2021-03-01
u003cpu003e In recent years, the performance of carbon anode materials for lithium-ion batteries has been continuously improved, and the study of electrolytes has also made great progress, while the development of cathode materials has been relatively slow, which restricts the improvement of the overall performance of lithium-ion batteries. Therefore, research and development of high-performance cathode materials has become a key link in the current development of lithium-ion batteries. Olivine-type LiFePO4 has become the research focus of lithium battery pack cathode materials due to its excellent electrochemical performance, environmental friendliness, and extensive sources of raw materials. Compared with traditional lithium ion secondary power supply cathode materials LiCoO2, LiNO2, LiMn2O4, LiFePO4 cathode material has relatively higher specific capacity (170mAh/g), stable working voltage (3.5 V), and thermal and chemical stability With good performance and outstanding safety performance, it is a green and environmentally friendly material with great development prospects. u003c/pu003eu003cpu003eu003cpu003e Olivine LiFePO4 belongs to the Pnmb space point group of the orthorhombic system, and its structure is shown in Figure 1. u003c/pu003eu003c/pu003eu003cpu003eFigure 1 Schematic diagram of the crystal structure of LiFePO4u003c/pu003e In the crystal structure of LiFePO4, O is arranged in a slightly distorted hexagonal close-packed manner. Li and Fe occupy the 4a and 4a positions of the octahedron respectively. The 4c u200bu200bposition forms the FeO6 octahedron and the LiO6 octahedron; P occupies the 4c u200bu200bposition of the tetrahedron to form the PO4 tetrahedron. On the bc plane, alternately arranged FeO6 layers. Between the FeO6 layers, adjacent LiO6 octahedrons are connected in the b direction by two O on the common edge to form a chain. Each PO4 tetrahedron shares two O on the edge with FeO6 octahedron, and at the same time shares O on the edge with two LiO6 octahedrons. Li+ forms a continuous linear chain with common edges at position 4a and is parallel to the C axis, so that Li+ has two-dimensional mobility and can be freely deintercalated during charging and discharging. In addition, the P-O covalent bond forms a delocalized three-dimensional chemical bond, which makes LiFePO4 have good thermodynamic and kinetic stability. u003c/pu003e
Shenzhen Chuangneng Ruiyuan Electronics CO.,LTD. are maintaining a consistent bottom-line profit and that you've shown steady growth over the past few years.
Shenzhen Chuangneng Ruiyuan Electronics CO.,LTD. are a market-focused, process-centered organization that develops and delivers innovative solutions to our customers, consistently outperforms our peers, produces predictable earnings for our customers, and provides a dynamic and challenging environment for our employees.
Overwhelming customers with too much information or the slew of benefits custom lithium ion battery provides–even if they're all valid–is a surefire way to lose their attention.
But we do think that reckoning with supply chains of custom lithium ion battery is a really important step. Even super simple switches in material, or sourcing, or shipping, or worker benefits seems like good place to start.
Custom message
Chat Online 编辑模式下无法使用
Chat Online inputting...
We will get back to you asap