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Issue 48, 2017
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Vertical bismuth oxide nanosheets with enhanced crystallinity: promising stable anodes for rechargeable alkaline batteries

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Abstract

Aqueous alkaline batteries represent an emerging kind of energy storage device, which hold great promise to power electronics with both high energy density and power density. However, their development is severely limited by their anodes which have unsatisfying cycling stability. Herein, we report the facile synthesis of Bi2O3 nanosheets vertically aligned on carbon paper, which achieve good electrochemical properties as anodes for alkaline batteries. It is also demonstrated that the crystallinity plays an important role in adjusting the energy storage ability. High crystallinity can efficiently promote the ion diffusion rate within Bi2O3, the reversible phase transition and the accommodation of structural strain, which significantly boost the capacity and cycling stability. The as-obtained highly crystalline Bi2O3 electrode reached a high specific capacity of 0.14 mA h cm−2 at 4 mA cm−2 and achieved outstanding electrochemical stability, with a high capacity retention of 71.4% after 5000 cycles. These findings will provide additional insight into the construction of high-performance anodes for alkaline batteries.

Graphical abstract: Vertical bismuth oxide nanosheets with enhanced crystallinity: promising stable anodes for rechargeable alkaline batteries

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Supplementary files

Article information


Submitted
24 Sep 2017
Accepted
11 Nov 2017
First published
13 Nov 2017

J. Mater. Chem. A, 2017,5, 25539-25544
Article type
Paper

Vertical bismuth oxide nanosheets with enhanced crystallinity: promising stable anodes for rechargeable alkaline batteries

H. Zheng, H. Li, M. Yu, M. Zhang, Y. Tong, F. Cheng and X. Lu, J. Mater. Chem. A, 2017, 5, 25539
DOI: 10.1039/C7TA08451J

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