Modelling of degradation and a soft failure moment during the operation of a supercapacitor applying selected diffusion processes

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F17%3A00111926" target="_blank" >RIV/00216224:14310/17:00111926 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60162694:G42__/17:00533951 RIV/60162694:G43__/17:00533951

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S1350630716310111" target="_blank" >https://www.sciencedirect.com/science/article/pii/S1350630716310111</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.engfailanal.2017.04.019" target="_blank" >10.1016/j.engfailanal.2017.04.019</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Modelling of degradation and a soft failure moment during the operation of a supercapacitor applying selected diffusion processes

Popis výsledku v původním jazyce

An important requirement imposed on storage batteries nowadays is to have sufficient capacity. At the same time a high level of availability, reliability and safety is required as well. Our intention is to determine a capacity degradation threshold and the moment the soft failure of a graphite supercapacitor (SC) occurs. If we do not take into account the idle state, the functioning of the supercapacitor might be expressed by charging and discharging processes under different operating conditions given by the allowed extent of SC design. When looking for the degradation threshold and the moment of soft failure occurrence we performed the experimental part of measuring in the climatic chamber. We performed and recorded the processes of SC charges and discharges at different temperatures: 40 degrees C, 25 degrees C and -42 degrees C and at different charging and discharging currents: 2A, 4A, 6A and 8A. The experimental results were used to model mathematically the SC discharge process. Appropriate tools used for SC discharge are diffusion processes. In this case we apply a Wiener process with drift and an Ito process.

Název v anglickém jazyce

Modelling of degradation and a soft failure moment during the operation of a supercapacitor applying selected diffusion processes

Popis výsledku anglicky

An important requirement imposed on storage batteries nowadays is to have sufficient capacity. At the same time a high level of availability, reliability and safety is required as well. Our intention is to determine a capacity degradation threshold and the moment the soft failure of a graphite supercapacitor (SC) occurs. If we do not take into account the idle state, the functioning of the supercapacitor might be expressed by charging and discharging processes under different operating conditions given by the allowed extent of SC design. When looking for the degradation threshold and the moment of soft failure occurrence we performed the experimental part of measuring in the climatic chamber. We performed and recorded the processes of SC charges and discharges at different temperatures: 40 degrees C, 25 degrees C and -42 degrees C and at different charging and discharging currents: 2A, 4A, 6A and 8A. The experimental results were used to model mathematically the SC discharge process. Appropriate tools used for SC discharge are diffusion processes. In this case we apply a Wiener process with drift and an Ito process.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10600 - Biological sciences

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název periodika

Engineering Failure Analysis

ISSN

1350-6307

e-ISSN

1873-1961

Svazek periodika

82

Číslo periodika v rámci svazku

DEC

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

17

Strana od-do

566-582

Kód UT WoS článku

000413323400048

EID výsledku v databázi Scopus

2-s2.0-85018437285