Facile microwave-assisted synthesis of Ce-doped Bi2O3 for efficient hybrid supercapacitors
Xin Tao , Mingqi Wei , Lianghao Yu , Bocheng Zhuang , Linlin Zhang , Ruilin Zhu , Guangzhen Zhao , Lu Han , Yuanyuan Zhu , Huile Jin , Guang Zhu
Battery Energy ›› 2024, Vol. 3 ›› Issue (2) : 20230052
Facile microwave-assisted synthesis of Ce-doped Bi2O3 for efficient hybrid supercapacitors
Bismuth trioxide (BT) is considered a fascinating anode material for hybrid supercapacitors (HSCs) due to its high theoretical capacity, but the low conductivity limits further applications. With this in mind, Ce-doped Bi2O3 (Ce-BT) nanoflower spheres were synthesized by a facile and rapid microwave-assisted solvothermal method for HSCs anode materials. It is found that the morphology of BT could be controlled by Ce doping from stacked nanosheets to well-dispersed nanoflowers spheres and producing abundant amorphous regions, thus expediting the ion transport rate. Consequently, when the added Bi to Ce molar ratio is 40:1 (Ce-BT-40), it exhibited a specific capacity of 220 mAh g-1 at 0.5 A g-1. Additionally, when fabricating HSCs with as-prepared Ce-BT-40 and CeNiCo-LDH, an energy density of 59.1 Wh kg-1 is provided at a power density of 652Wkg-1. This work not only reveals the mechanism of the effect of Ce doping on the electrochemical properties of BTs, but also proposes a rapid synthesis method of Ce-BTs by microwave-assisted solvent method, which provides new insights for building advanced HSCs with high energy density and low cost.
anode materials / cerium-doped Bi 2O 3 / hybrid supercapacitors / microwave-assisted / nanoflowers spheres
2024 The Authors. Battery Energy published by Xijing University and John Wiley & Sons Australia, Ltd.
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