Important advantages of lithium iron phosphate batteries

Lithium iron phosphate battery, the full name of lithium battery, lithium iron phosphate refers to the use of lithium iron phosphate as the anode material of lithium batteries, here tell me the naming rules of the battery industry, at present, we usually call the anode material of the battery, the cathode It is usually made of graphite anodes, such as batteries, ternary sliding or NCA, lithium cobalt oxide batteries, lithium cobalt oxide is used as the positive electrode material, and lithium iron phosphate is used as the positive electrode material of lithium iron phosphate. 2 Advantages Important advantages of lithium iron phosphate batteries: high safety performance The p-o bond in the lithium iron phosphate crystal is stable and not easy to decompose. Even in the case of high temperature or overcharge, the structure will not collapse and generate heat or form strong oxidizing substances like lithium cobalt oxide. The decomposition temperature of lithium iron phosphate is about 600°C, which has good safety. Although there are burning and explosions in the case of overcharging, the safety of overcharging is greatly improved compared with ordinary liquid electrolyte lithium cobalt oxide batteries and ternary batteries. Long life The cycle life of lead-acid batteries is about 300 times, and the maximum is about 500 times. The cycle life of lithium iron phosphate batteries is more than 2000 times, and it can reach 2000 times using standard charging (0.2c, 5 hours). Lead-acid batteries of the same quality have new half a year, half a year old, half a year for repair and repair, up to 1 to 1.5 years, while under the same conditions, the theoretical life of lithium iron phosphate batteries will reach 7 to 8 years. Overall, the performance ratio is theoretically more than 4 times that of lead-acid batteries. High-current discharge can quickly charge and discharge high-current 2C. In a special charger, the battery can be fully charged within 40 minutes of 1.5C charging, and the starting current can reach 2C, but lead-acid batteries have no such performance. High temperature performance The electric heating peak of lithium iron phosphate can reach 350℃-500℃, while the electric heating peak of lithium manganate and lithium cobalt oxide is only about 200℃. The operating temperature range is wide (-20c-+75C). The peak value of lithium iron phosphate with high temperature resistance can reach 350℃-500℃, while lithium manganate and lithium cobaltate are only around 200℃. Large-capacity has a larger capacity than ordinary batteries (such as lead-acid batteries). Through the battery density of capacity, the energy density of lead-acid batteries is about 40WH/kg. The mainstream lithium iron phosphate batteries in the market have energy densities greater than 90WH/kg. . No memory effect When rechargeable batteries are continuously charged, their capacity will quickly drop below the rated capacity. This phenomenon is called the memory effect. For example, nickel-metal hydride batteries and nickel-cadmium batteries have memory, but lithium iron phosphate batteries do not have this phenomenon (lithium batteries generally have no memory effect). No matter what the state of the battery is, it can be used while charging, do not take it out and recharge. Lightweight and the same specification and capacity of lithium iron phosphate batteries are 2/3 of the volume of lead-acid batteries, 1/3 of the weight of lead-acid batteries, and energy density several times that of lead-acid batteries. Environmentally friendly batteries are generally considered to be free of heavy metals and rare metals (Nickel-hydrogen batteries require rare metals), non-toxic (SGS certified), non-polluting, comply with European RoHS regulations, and are green batteries. An important reason why the industry is optimistic about lithium batteries is the concern about the environment. But please face it squarely. It is good that lithium batteries belong to the new energy industry, but they cannot prevent the problem of heavy metal pollution. Metal materials such as lead, arsenic, cadmium, mercury, and chromium may be released into dust and water. The battery itself is a kind of chemical substance, so there are two possible pollutions: one is the pollution of the excrement of the process in the processing engineering; second, the pollution of the discarded battery is serious. Comparison of other materials At present, the most promising anode materials for power lithium batteries are mainly modified lithium manganate (LiMn2O4), lithium iron phosphate (LiFePO4) and lithium nickel cobalt manganese (Li(Ni,Co,Mn)O2). Meta material. Due to the lack of cobalt resources, high nickel and cobalt content, and large price fluctuations, it is generally believed that NMC lithium ternary material is difficult to become the mainstream power lithium battery electric vehicle, but it can be mixed with spinel lithium manganate in a certain range Inside. Disclaimer: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete.