▎ 摘　　要

NOVELTY - The method involves (1) preparing pomelo peel fiber sheet dispersion, (2) mixing the pomelo peel fiber sheet dispersion, conductive agent and electrode material evenly, performing vacuum filtration to obtain a self-supporting film and drying to obtain a flexible electrode, (3) vacuum filtering the pomelo peel fiber sheet dispersion to obtain a gel film and soaking the gel film into an aqueous electrolyte solution, and (4) forming a flexible zinc-ion battery based on the prepared flexible electrodes, quasi-solid-state electrolytes and current collectors. USE - Preparation method for pomelo peel fiber sheets based-flexible zinc-ion battery (claimed) used in portable and wearable devices such as rollable displays, electronic skin and implantable medical devices. ADVANTAGE - The pomelo peel fiber sheets is derived from biomass, and the manufacturing cost is low and environmentally-friendly, which has good biocompatibility and degradability. The energy density of the assembled flexible aqueous zinc-ion full battery can reach up to 62.7 Wh kg-1. The pomelo peel fiber sheet has a rich pore structure, which is conducive to the retention of electrolyte and the transmission of electrolyte ions, which can greatly improve the rate performance of the battery. The interlayer structure combined with line and surface in the electrode can provide a buffer space for the electrode during the deformation process, so that the electrode has good mechanical stability. The good flexibility of the pomelo peel fiber sheet can ensure that the flexible zinc ion battery maintains structural integrity during various bending deformation processes, and endows the battery with relatively stable electrochemical performance, especially conducive to the improvement of the battery rate performance. DESCRIPTION OF DRAWING(S) - The drawing shows the representation of the charge and discharge detection of the flexible zinc-ion battery prepared in this application before and after bending.