Preparation method of LiFePO4 film lithium ion battery anode with dispersed nano-silver particles

The present invention discloses a preparation method of full-solid state film lithium ion battery anode--LiFePO4 anode film with dispersed nano-silver particles, belonging to the technical field of electrochemistry. The invention comprises the following steps: dissolving iron compounds and lithium compounds into water to obtain liquid A; mixing water, complexing agent and silver nitrate to obtain liquid B; adding phosphoric acid or phosphate into the liquid A or liquid B; stirring and mixing liquid A and liquid B to obtain stable sol; preparing the gel film on the surface substrate with Pt and Au by adopting the glue evening method; preheating and decomposing at the temperature of 260-400 DEG C; and annealing in an atmosphere of H2 and at the temperature of 600-700 DEG C to obtain the Ag/LiFePO 4film. Compared with traditional anode film, the nano-silver particles LiFePO4 film has controllable stoichiometric composition and simple preparation method, technology and device; and compared with traditional LiFePO