Journal
CHEMPLUSCHEM
Volume 82, Issue 9, Pages 1170-1173Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cplu.201700258
Keywords
batteries; bipolar materials; electrochemistry; nanostructures; Prussian blue
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Funding
- National Nature Science Foundation of China [21471090, 61527809]
- Taishan Scholarship in Shandong Provinces [ts201511004]
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Bipolar materials, which work as both the cathode and anode material in aqueous sodium-ion batteries, have advantages over aqueous electrolytes such as the low cost of sodium and high convenience of the material processing. However, the available materials are greatly limited. Herein, Prussian blue FeFe(CN)(6) nanocubes were successfully synthesized by using a modified co-precipitation method. Owing to the well-separated redox reactions, fair cycling stability and rate capability of FeFe(CN)(6), it could be developed as a bipolar material in an aqueous sodium-ion battery. The as-obtained full battery exhibits good cycling stability and rate capability. It was able to deliver a capacity of 32mAhg(-1) at 20C, 76% of the capacity at 2C. After 200cycles at 2C, 97% of the initial capacity was maintained for this battery, which suggests good cycling stability.
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