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Article

Titanium Activation in Prussian Blue Based Electrodes for Na-ion Batteries: A Synthesis and Electrochemical Study

1
Department of Industrial Chemistry “Toso Montanari”, University of Bologna, Viale Risorgimento 4, 40136 Bologna, Italy
2
Helmholtz Institute Ulm (HIU), Helmholtzstrasse 11, 89081 Ulm, Germany
3
Karlsruhe Institute of Technology (KIT), P.O. Box 3640, 76021 Karlsruhe, Germany
*
Author to whom correspondence should be addressed.
Batteries 2021, 7(1), 5; https://doi.org/10.3390/batteries7010005
Received: 28 November 2020 / Revised: 1 January 2021 / Accepted: 5 January 2021 / Published: 7 January 2021
(This article belongs to the Special Issue Sodium-Ion Battery: Latest Advances and Prospects)
Sodium titanium hexacyanoferrate (TiHCF, Na0.86Ti0.73[Fe(CN)6]·3H2O) is synthesized by a simple co-precipitation method in this study. Its crystal structure, chemical composition, and geometric/electronic structural information are investigated by X-ray powder diffraction (XRPD), microwave plasma-atomic emission spectroscopy (MP-AES), and X-ray absorption spectroscopy (XAS). The electroactivity of TiHCF as a host for Li-ion and Na-ion batteries is studied in organic electrolytes. The results demonstrate that TiHCF is a good positive electrode material for both Li-ion and Na-ion batteries. Surprisingly, however, the material shows better electrochemical performance as a Na-ion host, offering a capacity of 74 mAh g−1 at C/20 and a 94.5% retention after 50 cycles. This is due to the activation of Ti towards the redox reaction, making TiHCF a good candidate electrode material for Na-ion batteries. View Full-Text
Keywords: titanium hexacyanoferrate; cathode material; Na/Li-ion batteries titanium hexacyanoferrate; cathode material; Na/Li-ion batteries
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MDPI and ACS Style

Li, M.; Mullaliu, A.; Passerini, S.; Giorgetti, M. Titanium Activation in Prussian Blue Based Electrodes for Na-ion Batteries: A Synthesis and Electrochemical Study. Batteries 2021, 7, 5. https://doi.org/10.3390/batteries7010005

AMA Style

Li M, Mullaliu A, Passerini S, Giorgetti M. Titanium Activation in Prussian Blue Based Electrodes for Na-ion Batteries: A Synthesis and Electrochemical Study. Batteries. 2021; 7(1):5. https://doi.org/10.3390/batteries7010005

Chicago/Turabian Style

Li, Min; Mullaliu, Angelo; Passerini, Stefano; Giorgetti, Marco. 2021. "Titanium Activation in Prussian Blue Based Electrodes for Na-ion Batteries: A Synthesis and Electrochemical Study" Batteries 7, no. 1: 5. https://doi.org/10.3390/batteries7010005

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