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Vertical Bismuth Oxide Nanosheets with Enhanced Crystallinity: Promising Stable Anode for Rechargeable Alkaline Batteries

Abstract

Aqueous alkaline batteries represent anemergingkind of energy storage device, which holds great promise to power electronics with both high energy density and power density. However, their development is severely limited by their anodes with unsatisfying cycling stability. Herein, we report the facile synthesis of Bi2O3nanosheets vertically aligned on carbon paper, which achieved good electrochemical features as anode for alkaline batteries. It is also demonstrated that the crystallinity plays an important role in adjusting the energy storage ability. High crystallinity could efficiently promote the ion diffusion rate within Bi2O3, the reversible phase transition, and the accommodation of the structural strain, thus significantly boosting the capacity and cycling stability. The as-obtained high-crystalline Bi2O3 electrode reached a high specific capacity of 0.14 mAh/cm2 at 4 mA/cm2 and outstanding electrochemical stability with high capacity retention of 71.4% after 5000 cycles. All these findings will provide more insight to the construction of high-performance anodes for alkaline batteries

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Publication details

The article was received on 24 Sep 2017, accepted on 11 Nov 2017 and first published on 13 Nov 2017


Article type: Paper
DOI: 10.1039/C7TA08451J
Citation: J. Mater. Chem. A, 2017, Accepted Manuscript
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    Vertical Bismuth Oxide Nanosheets with Enhanced Crystallinity: Promising Stable Anode for Rechargeable Alkaline Batteries

    H. Zheng, H. Li, M. Yu, M. Zhang, Y. Tong, F. Cheng and X. Lu, J. Mater. Chem. A, 2017, Accepted Manuscript , DOI: 10.1039/C7TA08451J

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