Method for recovering decommissioned lithium ion battery anode material by utilizing hydrothermal method

The invention discloses a method for recovering a decommissioned lithium ion battery anode material by utilizing a hydrothermal method, and belongs to the technical field of lithium ion battery recovery. The method comprises the steps that: adding the decommissioned lithium ion battery anode material into a mixed solution of organic acid and a saccharide reducing agent, transferring the mixed solution to a reaction kettle, then sealing the reaction kettle, heating the reaction kettle under the temperature of 100-300 DEG C, and reducing oxides of the decommissioned lithium ion battery anode material into valuable metal ions by a reducing functional group of the saccharide reducing agent to obtain black turbid liquid; and carrying out centrifuging on the black turbid liquid, and after removing black precipitates, and filtering supernatant by using a water system filter membrane with the pore diameter of less than 2 microns to obtain a leaching solution containing the valuable metal ions.The method has the advan