What are the remedies for the shortcomings of lithium iron phosphate?

The shortcomings of lithium iron phosphate batteries are compensated by: carbon coating to improve electronic conductivity, adding metal particles, conductive organic coating, doping metal ions to improve electronic conductivity, synthesizing small particle size materials to reduce diffusion distance, and synthesizing a spherical shape with controllable particle size Particles. 1. Mixed addition of raw materials for carbon coating technology (1) Straightly add carbon: graphite, carbon black, acetylene black, etc.; (2) substances that can be converted into carbon after pyrolysis: glucose, sucrose, white sugar, polypropylene, polypropylene Amide, lithium polyacrylate, polyvinyl alcohol, citric acid, kerosene, β-cyclodextrin, ethanol and phenolic resin, etc. 2. Add at the end of sintering at the cooling stage after the burning of lithium iron phosphate, spray methanol on it, and heat the methanol Analyze the carbonization and form a carbon film on the surface of lithium iron phosphate 3. Add metal particles (1) Use silver mirror reaction to plate silver on the surface of lithium iron phosphate (2) Add silver or copper particles straight during mixing 4. Conductive organic coating Polymerize conductive organics such as polypyrrole, polythiophene, polyaniline, etc. on the surface of lithium iron phosphate. 5. Doping with metal ions, using ball milling to mix raw materials and then performing solid phase synthesis to synthesize six doping substances Li1-xMxFePO4 (Mu003dMg, Al, Ti, Zr, Nb, W). The electronic conductivity of the doped material is 8 orders of magnitude higher than that of LiFePOa, reaching 10-2Scm-1 at room temperature. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact and delete it. A: Analysis of the first charging method and charging time of lithium batteries for electric vehicles