Prussian Blue Analogous Na2Ni0.33Co0.33[Fe(CN)(6)] Nanoparticles as Cathode Material for Non-Aqueous Na-Ion Batteries

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We report on the electrochemical properties of 20 nm Na2Ni0.33Co0.33[Fe(CN)(6)] nanoparticles. Na2Ni0.33Co0.33[Fe(CN)(6)] nanoparticles overcome the poor electronic conductivity and deliver an initial charge capacity of 77 mAh g(-1) at 0.1C rate and and 55 mAh g(-1) after 320 cycles at 1C rate. At high current rate of 5C, they deliver 35 mAh g(-1) and exhibit almost 100% columbic efficiency. The single redox sodium ion chemistry with 3 V makes the material suitable for non-aqueous sodium ion batteries. The redox couple Fe3+/Fe2+ is seen to be electrochemically active during the charge/discharge process, which is confirmed by ex situ X-ray photon spectroscopy.
Publisher
ELECTROCHEMICAL SOC INC
Issue Date
2021-06
Language
English
Article Type
Article
Citation

ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY, v.10, no.6

ISSN
2162-8769
DOI
10.1149/2162-8777/ac0a42
URI
http://hdl.handle.net/10203/286423
Appears in Collection
MS-Journal Papers(저널논문)
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