Cycle life and degradation sources in Li-S cells

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F19%3APU133718" target="_blank" >RIV/00216305:26620/19:PU133718 - isvavai.cz</a>

Výsledek na webu

—

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

Cycle life and degradation sources in Li-S cells

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Cycle life and degradation sources in Li-S cells

Popis výsledku anglicky

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.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20201 - Electrical and electronic engineering

Projekt

<a href="/cs/project/LQ1601" target="_blank" >LQ1601: CEITEC 2020</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Technical Digest of 13th Conference „Electron Technology” ELTE and 43rd International Microelectronics and Packaging IMAPS Poland Conference

ISBN

978-83-932464-3-4

ISSN

—

e-ISSN

—

Počet stran výsledku

2

Strana od-do

83-84

Název nakladatele

International Microelectronics and Packaging Society Poland Chapter

Místo vydání

Kraków, Poland

Místo konání akce

Wroclaw

Datum konání akce

4. 9. 2019

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

—