What are the advantages and disadvantages of lithium iron phosphate battery cathode materials?

Performance advantages of lithium iron phosphate battery cathode 1. High energy density: its theoretical specific capacity is 170mAh/g, and the actual specific capacity of the product can exceed 140mAh/g (0.2C, 25C); 2. Safe and pollution-free: it is the safest at present Lithium battery cathode material; does not contain any heavy metal elements harmful to the human body; it complies with European RoHS regulations and is an absolute green battery certificate; 3. Long life: under 100% DOD conditions, it can be charged and discharged more than 2000 times; lithium iron phosphate The service life of a battery is closely related to its use temperature. If the use temperature is too low or too high, there will be great hidden dangers in the charging and discharging process and use process; the shortcomings of the lithium iron phosphate battery cathode material 1. Poor conductivity. This issue is its most critical issue. The reason why lithium iron phosphate batteries have not been widely used is an important problem. However, this problem can now be solved perfectly: adding C or other conductive agents. The laboratory reports that it can reach a specific capacity above 160mAh/g. 2. The tap density is low. Generally, it can only reach 1.3-1.5g/ml, and the low tap density can be said to be the biggest disadvantage of lithium iron phosphate. This shortcoming determines that it has no advantages in small batteries such as mobile phone batteries. Even though it has low cost, good safety performance, good stability, and high cycle times, if the volume is too large, it can only replace lithium cobalt oxide in a small amount. This shortcoming will not be prominent in power lithium-ion batteries. Therefore, lithium iron phosphate is mainly used to make power lithium-ion batteries. 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: What are the five major characteristics of lithium batteries?