| abstract |
The invention provides a kind of NH 4 Fe 1‑x M x PO 4 And LiFe 1‑ x M x PO 4 The preparation method of/C-material.The method is made into mixture aqueous solution with P source compound, divalence Fe source compound, divalence M metal salt compound (M=Ni, Co, Mn) and reducing agent as raw material, piece shape NH is synthesized with ammonia spirit 4 Fe 1‑x M x PO 4 Presoma, then carry out mixing lithium and high-temperature heat treatment, prepare LiFe 1‑x M x PO 4 / C-material.The LiFe prepared using the method 1‑x M x PO 4 / C-material have energy density height, good cycle, high rate performance excellent the features such as, be suitable for lithium-ion-power cell application.Step is simple and convenient to operate, practical. |