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Kuz'mina A. A., Kudryashova Y. O., Kulova T. L., Skundin A. M., Chekannikov A. A. Degradation Mechanism of Electrodes from Sodium Titanate at Cycling. Electrochemical Energetics, 2019, vol. 19, iss. 3, pp. 148-?. DOI: 10.18500/1608-4039-2019-19-3-148-156, EDN: JXVFTL

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Degradation Mechanism of Electrodes from Sodium Titanate at Cycling

Kuz'mina Anna Aleksandrovna, Institute of Physical Chemistry and Electrochemistry of A. N. Frumkina of RAS
Kudryashova Yuliya Olegovna, National Research University "MEI"
Kulova Tat'yana L'vovna, Institute of Physical Chemistry and Electrochemistry of A. N. Frumkina of RAS
Skundin Aleksandr Mordukhaevich, Institute of Physical Chemistry and Electrochemistry of A. N. Frumkina of RAS
Chekannikov Andrei Aleksandrovich, Institute of Science and Technologies

Degradation of Na2Ti3O7-based electrodes is studied by galvanostatic as well as electrochemical impedance spectroscopy methods. The rate of degradation was shown to decrease from cycle to cycle as the cycling progresses and also as the cycling current increases. It was concluded that the main reason of degradation is the gradual an electrolyte reduction with the formation of insoluble products (SEI).


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