Analyze the technical characteristics of lithium iron phosphate batteries

Lithium iron phosphate battery technology Lithium iron phosphate battery is unique in its crystal structure. The shape of the crystal after crystallization is divided into metal ions/atoms/molecular crystals. The ionic crystals of lithium ion batteries are ionic compounds based on the positive electrode material. The shape, that is, the crystal formed by the combination of positive and negative ion groups is based on a certain ratio of ionic bonds. Generally speaking, ionic crystals are fragile, have high melting and boiling points, and can conduct electricity when they are melted or dissolved. All lithium-ion batteries, including lithium iron phosphate, are based on ionic conductivity. Most of the internal crystal structure of the lithium-ion battery anode adopts a spinel structure. This arrangement of lithium manganese oxide, lithium cobalt oxide, and ternary lithium ion batteries is the same. This structure consists of eight small units of cubic spinel crystals. Cells (crystal units, can be crystal cells), the cells are recombined into an octahedral crystal structure. The olive-shaped structure of a lithium iron phosphate battery is a short cylinder. The three lithium-ion batteries with spinel structure have their own characteristics. Lithium cobalt oxide batteries have good overall performance, but low capacity, but also have safety problems and are expensive for market promotion; lithium manganate batteries are easy to carry, low cost, safe and reliable, but have poor cycle performance and storage performance; ternary Lithium-ion batteries are designed to reconcile these two shortcomings. Due to their stable structure, increased capacity and improved safety, they are still relatively expensive due to strategic materials such as cobalt. The general disadvantage of spinel lithium-ion batteries is insufficient power and not suitable for large-scale applications. The technical characteristics and economy of lithium iron phosphate batteries are suitable for large and medium-sized markets. Specifically: 1. The voltage of the lithium iron phosphate battery is moderate: the nominal voltage is 3.2v, the charging voltage is 3.6v, and the discharging voltage is 2.0v; 2. The theoretical capacity is large, and the energy density is 170mAh/g; 3. The thermal stability is good, and it is resistant. High temperature; 4. Moderate energy storage, cathode material compatible with most electrolyte systems; 5. Shutdown voltage 2.0v, can release larger capacity, discharge is large and balanced; 6. This voltage platform has good characteristics, charging and discharging voltage platform The degree of balance is close to that of the regulated power supply. The above-mentioned technical characteristics make it possible to realize the ideal of high power and safety, and strongly promote the large-scale application of lithium iron phosphate batteries. In addition to technical characteristics, lithium iron phosphate batteries have two market advantages: 2. No precious metals, non-toxic, and environmentally friendly products. This makes lithium iron phosphate batteries popular in the current new energy vehicle market and become the preferred base station energy storage technology. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: Composition of lithium batteries and precautions for use