ISSN 1608-4039 (Print)
ISSN 1680-9505 (Online)

For citation:

Kulova T. L., Li S. A., Skundin A. M. On degradation mechanism of lithium-sulfur batteries. Electrochemical Energetics, 2025, vol. 25, iss. 2, pp. 61-67. DOI: 10.18500/1608-4039-2025-25-2-61-67, EDN: AKBOXH

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Language: 
Russian
Heading: 
Lithium electrochemical systems
Article type: 
Article
UDC: 
544.6:521.3
DOI: 
10.18500/1608-4039-2025-25-2-61-67
EDN: 
AKBOXH

On degradation mechanism of lithium-sulfur batteries

Autors: 
Kulova Tat'yana L'vovna, Institute of Physical Chemistry and Electrochemistry of A. N. Frumkina of RAS
Li Sergey A., 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
Abstract: 

Using the method of normalized galvanostatic curves, as well as taking into account the changes in the half-charge and half-discharge potentials of an electrode, the latter based on a sulfur composite with reduced graphene oxide, it was established that the main reason for electrode degradation during cycling was the loss of active material (due to the shuttle transfer of polysulfides and sulfur from the positive electrode to the negative lithium one).

Key words: 
lithium-sulfur battery
reduced graphene oxide
normalized galvanostatic curves
degradation during cycling
shuttle transfer
Acknowledgments: 
The work was carried out with the financial support of the Ministry of Science and Higher Education of the Russian Federation.
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Received: 
27.03.2025
Accepted: 
09.06.2025
Published: 
30.06.2025