Novel aqueous rechargeable nickel//bismuth battery based on highly porous Bi2WO6 and Co0.5Ni0.5MoO4 microspheres

• Published in: Rare metals Vol. 42; no. 3; pp. 902 - 915
• Main Authors: Kang, Wei-Wei, Zhao, Ya-Nan, Zhang, Wen-Qing, Sun, Ying, Zhang, Xue-Qin, Yi, Gui-Yun, Huang, Guang-Xu, Xing, Bao-Lin, Zhang, Chuan-Xiang, Lin, Bao-Ping
• Format: Journal Article
• Language: English
• Published: Beijing Nonferrous Metals Society of China 01.03.2023; Springer Nature B.V
• Subjects: Batteries; Biomaterials; Bismuth compounds; Chemistry and Materials Science; Electrochemical analysis; Electrodes; Energy; Materials Engineering; Materials Science; Metallic Materials; Microspheres; Nanoscale Science and Technology; Nickel; Original Article; Physical Chemistry; Porous materials; Rechargeable batteries; Tungstates; Aqueous rechargeable batteries (ARBs); microspheres; Bi; Energy storage and conversion; Porous Co; WO; Ni; MoO
• ISSN: 1001-0521; 1867-7185
• DOI: 10.1007/s12598-022-02178-9

Developing high performances aqueous rechargeable batteries is imperative and valuable. Herein, a novel aqueous rechargeable nickel//bismuth battery is developed based on highly porous Bi 2 WO 6 and Co 0.5 Ni 0.5 MoO 4 microspheres as electrode active materials. Porous Bi 2 WO 6 microspheres assembled from nanosheets as anode active materials can afford a specific capacity of 179.2 mAh·g −1 at 1 A·g −1 , rate capability of 74.7% in 1–20 A·g −1 , and capacity retention of 57.2% for 1500 cycles at 15 A·g −1 . Owing to the highly porous microsphere with ‘ribbon’-like and intertwined nanolayers morphology, the screened Co 0.5 Ni 0.5 MoO 4 cathode active materials present an outstanding specific surface area of 293 m 2 ·g −1 and excellent electrochemical performance (such as superior specific capacity of 113.2 mAh·g −1 at 1 A·g −1 , high rate performance of 51.8% in 1–15 A·g −1 , and good capacity retention of 48.5% for 4600 cycles at 15 A·g −1 ). The corresponding aqueous rechargeable nickel//bismuth battery delivers the maximum energy density and power density of 35.8 Wh·kg −1 and 3238.5 W·kg −1 , respectively. The present research would offer a worthwhile guidance for the effective construction of electrode active materials for aqueous rechargeable nickel//bismuth batteries. Graphical abstract