A method for the pretreatment of biomass based on the synergistic effect of neutral, low eutectic solvent and potassium bicarbonate and its application for energy storage

Abstract

The present invention discloses a process for the pretreatment of biomass and an application for energy storage based on the synergistic action of a neutral, low-melting-point solvent and potassium bicarbonate, and in particular comprising the following steps: Step 1: Preparation of the neutral, low-melting-point solvent; Step 2: Pretreatment of wheat straw with the solvent obtained in Step 1 to obtain lignin; Step 3: Enzymatic saccharification of the product obtained in Step 2; Step 4: Production of DES-based lignin-carbon materials. This invention uses a neutral DES as the base solvent and potassium bicarbonate (KHCO₃) as a weak base synergist, with wheat straw being used as the primary raw material. The process is characterized by ease of handling, high practicality, and environmental friendliness without pollution.It synergistically optimizes the high value potential of lignin and delivers energy storage materials with high mechanical strength, superior electrochemical performance and excellent safety.