Gel electrolyte for silicon-carbon material, preparation method of gel electrolyte and battery

The invention belongs to the technical field of lithium ion batteries, and particularly relates to a gel electrolyte for a silicon-carbon material, a preparation method of the gel electrolyte and a battery. The preparation method of the gel electrolyte for the silicon-carbon material comprises the following steps: sequentially adding a polymer monomer, an initiator and an additive into a carbon-silicon electrolyte under a protection condition, and carrying out in-situ polymerization to obtain the gel electrolyte for the silicon-carbon material. In the invention, the additive is specifically Lewis acid or an acid catalyst. Lewis acid or an acid catalyst is introduced into the gel electrolyte and can be combined with PF6 in lithium salt LiPF6, so that dissociation of the lithium salt is promoted, the number of undissociated LiPF6 is reduced, side reactions caused by decomposition of the lithium salt LiPF6 are reduced, and the effect of prolonging the cycle life of the battery is achieved. 本发明属于锂离子电池技术领域，具体涉