Electrochemical characteristics of lithium-sulfur pouch cells. Effect of compression force of electrode modules

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Abstract

The effect of the electrode sizes, the cell design and the compression force of the electrode modules on the impedance and discharge characteristics of lithium-sulfur cells was studied. It was shown that Swagelok and pouch cells with identical electrodes have different electrochemical characteristics – charge transfer resistance, discharge capacity and cycling duration. It was found that the discharge capacity at the first cycle of Swagelok and pouch cells differs by 20% approximately. The capacity of pouch cells decreases faster during cycling. The cycling of pouch cells in a compressed state (similar to Swagelok cells) does not improve the electrochemical characteristics of pouch cells.

About the authors

Dmitry Vladimirovich Kolosnitsyn

Ufa Institute of Chemistry of the Russian Academy of Sciences

69 Prospect Oktyabrya, Ufa 450054, Russia

Nadezhda V. Egorova

Ufa Institute of Chemistry of the Russian Academy of Sciences

ORCID iD: 0000-0002-8095-6832
69 Prospect Oktyabrya, Ufa 450054, Russia

Alena M. Ionina

Ufa Institute of Chemistry of the Russian Academy of Sciences

ORCID iD: 0009-0005-4842-7294
69 Prospect Oktyabrya, Ufa 450054, Russia

Elena Vladimirovna Kuzmina

Ufa Institute of Chemistry of the Russian Academy of Sciences

ORCID iD: 0000-0002-3758-4762
Scopus Author ID: 6701413998
ResearcherId: A-9687-2011
69 Prospect Oktyabrya, Ufa 450054, Russia

Elena Vladimirovna Karaseva

Institute of Organic Chemistry of the Ufa RAS Scientific Center

ORCID iD: 0000-0002-8447-7230
Scopus Author ID: 7005028309
71, Oktyabrya Ave, Ufa, 450054

Vladimir Sergeevich Kolosnitsyn

Institute of Organic Chemistry of the Ufa RAS Scientific Center

ORCID iD: 0000-0003-1318-6943
71, Oktyabrya Ave, Ufa, 450054

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