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


Coulombic efficiency

On the criteria of cyclability of anode-free batteries

The correlation between the Coulombic efficiency and the change in the residual capacity of electrodes and batteries under conditions without any parallel irreversible reactions was formulated. It was shown that this relationship allows drawing certain conclusions regarding the nature of degradation processes during cycling.

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

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.