Herein, we report a facile, economic, efficient and binder-free strategy to synthesize a flower-like Bi₂O₃ thin films on flexible stainless steel mesh (FSSM) substrates by rotational chemical bath deposition (R-CBD) approach. The flower-like Bi₂O₃/FSSM exhibits a monoclinic α-Bi₂O₃ phase demonstrating the mesoporous nature with a 58.69 m² g⁻¹ specific surface area. The Bi₂O₃/FSSM electrode exhibits specific capacitance of 421.76 F g⁻¹ and specific capacity of 674.8 C g⁻¹ at 10 mA cm⁻² current density, remarkable cycle stability (60% up to 1000 cycles), and high energy density (149.95 Wh kg⁻¹) with power density (963.85 W kg⁻¹) in 6 M KOH electrolyte. The results indicate that the 6 M KOH is optimized concentration for Bi₂O₃/FSSM electrodes. An aqueous asymmetric supercapacitor (ASC) device is fabricated by activated carbon (AC) as cathode and Bi₂O₃/FSSM as an anode. The assembled Bi₂O₃||AC ASC device exhibits a specific capacitance of 36.37 F g⁻¹ at a current density of 1 mA cm⁻² with the energy density (ED) of 18.24 Wh kg⁻¹ at a power density (PD) of 1008.67 W kg⁻¹ and 83.67% capacitance retention after 1000 cycles at the current density of 2 mA cm⁻². The derived Bi₂O₃/FSSM served as a binder-free electrode that provides potential application for electrochemical energy storage devices.

在此，我们报告了一种简便、经济、高效且无粘合剂的策略，通过旋转化学浴沉积 (R-CBD) 方法在柔性不锈钢网 (FSSM) 基板上合成花状 Bi ₂ O _3薄膜。花状Bi ₂ O ₃ /FSSM 呈现出单斜的α-Bi ₂ O ₃相，具有58.69 m ² g ^-1比表面积的介孔性质。Bi ₂ O ₃ /FSSM 电极在 10 mA cm ^-2下表现出 421.76 F g ^-1的比电容和 674.8 C g ^{-1的比容量}在 6 M KOH 电解液中具有电流密度、出色的循环稳定性（60% 至 1000 次循环）和高能量密度（149.95 Wh kg ^-1）和功率密度（963.85 W kg ^{-1 ）。}结果表明，6 M KOH 是 Bi ₂ O ₃ /FSSM 电极的最佳浓度。以活性炭（AC）为阴极，Bi ₂ O ₃ /FSSM 为阳极，制备了一种水性不对称超级电容器（ASC）装置。组装的Bi ₂ O ₃ ||AC ASC 器件在1 mA cm ^-2的电流密度和18.24 Wh kg ^-1的能量密度(ED) 下表现出36.37 F g ^{-1的比电容}在 1008.67 W kg ^{-1的功率密度 (PD) 和 2 mA cm -2}的电流密度下 1000 次循环后的 83.67% 电容保持率。衍生的 Bi ₂ O ₃ /FSSM 可作为无粘合剂电极，为电化学储能装置提供潜在应用。