▎ 摘　　要

NOVELTY - Flexible bismuth oxyselenide-based electrode material comprises multi-walled carbon nanotubes (MCNTs) mixed with a bismuth salt and a selenium source to dissolve, liquid phase oil bath heating reaction after drying to obtain powder, powder and graphene dispersed in an ethanol aqueous solution composite reaction, and filtering into a film after sintering, namely the flexible bismuth oxyselenide-based electrode material. USE - The flexible bismuth oxyselenide-based electrode material is useful for a flexible battery. Uses include but are not limited to a notebook computer, smart mobile phone, foldable screen and intelligent clothes. ADVANTAGE - The flexible bismuth oxyselenide-based electrode material has high reversible capacity, stable cycle performance and excellent multiplying power performance. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing the flexible bismuth oxyselenide-based electrode material.