Detail publikace

Cycle life and degradation sources in Li-S cells

Originální název

Cycle life and degradation sources in Li-S cells

Anglický název

Cycle life and degradation sources in Li-S cells

Jazyk

en

Originální abstrakt

The degradation of Lithium-Sulphur cell structure within the charge-discharge cycling limits the lifetime of these devices. The sources of degradation are determined as (i) the change of electrode effective area, (ii) the decrease of electrolyte conductivity and (iii) the degradation of the potential barriers existing on the electrode/electrolyte interface. The mechanisms responsible for the Li-S structure degradation were indicated as the decrease of Sulphur quantity in the vicinity of carbon electrode available for the electrochemical reactions, and the thermal degradation of the electrolyte resulting from the temperature increase due to the cell cycling. Cycle life is influenced by the end-of-charge voltage (EOCV), end-of-discharge voltage (EODV) as well as by the charge-discharge current rate. The degradation of Li-S cell is accelerated by including the relaxation between the cell charge and discharge, i.e. keeping the cell in the charged state.

Anglický abstrakt

The degradation of Lithium-Sulphur cell structure within the charge-discharge cycling limits the lifetime of these devices. The sources of degradation are determined as (i) the change of electrode effective area, (ii) the decrease of electrolyte conductivity and (iii) the degradation of the potential barriers existing on the electrode/electrolyte interface. The mechanisms responsible for the Li-S structure degradation were indicated as the decrease of Sulphur quantity in the vicinity of carbon electrode available for the electrochemical reactions, and the thermal degradation of the electrolyte resulting from the temperature increase due to the cell cycling. Cycle life is influenced by the end-of-charge voltage (EOCV), end-of-discharge voltage (EODV) as well as by the charge-discharge current rate. The degradation of Li-S cell is accelerated by including the relaxation between the cell charge and discharge, i.e. keeping the cell in the charged state.

BibTex


@inproceedings{BUT159346,
  author="Vlasta {Sedláková} and Josef {Šikula} and Petr {Sedlák} and Ondřej {Čech}",
  title="Cycle life and degradation sources in Li-S cells",
  annote="The degradation of Lithium-Sulphur cell structure within the charge-discharge cycling limits the lifetime
of these devices. The sources of degradation are determined as (i) the change of electrode effective
area, (ii) the decrease of electrolyte conductivity and (iii) the degradation of the potential barriers
existing on the electrode/electrolyte interface. The mechanisms responsible for the Li-S structure
degradation were indicated as the decrease of Sulphur quantity in the vicinity of carbon electrode
available for the electrochemical reactions, and the thermal degradation of the electrolyte resulting from
the temperature increase due to the cell cycling. Cycle life is influenced by the end-of-charge voltage
(EOCV), end-of-discharge voltage (EODV) as well as by the charge-discharge current rate. The
degradation of Li-S cell is accelerated by including the relaxation between the cell charge and discharge,
i.e. keeping the cell in the charged state.",
  address="International Microelectronics and Packaging Society Poland Chapter",
  booktitle="Technical Digest of 13th Conference „Electron Technology” ELTE and 43rd International Microelectronics and Packaging IMAPS Poland Conference",
  chapter="159346",
  howpublished="electronic, physical medium",
  institution="International Microelectronics and Packaging Society Poland Chapter",
  year="2019",
  month="september",
  pages="83--84",
  publisher="International Microelectronics and Packaging Society Poland Chapter",
  type="conference paper"
}