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Revealing the thermodynamic background of the memory effect in phase separating cathode materialsZelič, Klemen ...Phase separating Li-ion battery cell cathode materials feature a well-known phenomenon called the memory effect. It manifests itself as an abnormal change in working voltage being dependent on cell ... cycling history. It was only recently that plausible mechanistic reasoning of the memory effect in Li-ion batteries was proposed. However, the existing literature does still not consistently reveal a phenomenological background for the onset or absence of the memory effect. This paper provides strong experimental and theoretical evidence of the memory effect in phase separating Li-ion battery cathode materials. Specifically, the background leading to the onset or absence of the memory effect and the underlying causal chain of phenomena from the collective particle-by-particle intra-electrode phenomena to macroscopic voltage output of the battery are presented and discussed. The results, clearly reveal that no memory effect is observed and predicted for low cut off voltages, whereas the absence of the first rest in memory writing cycle does not result in the absence of the memory effect, as previously believed. In addition, excellent agreement between the simulated and measured results is shown which, on one hand confirms the credibility of the combined analyses and, on the other, provides clear causal relations from macroscopic experimental parameters to simulated phenomena on the particle level.Source: Strojniški vestnik = Journal of mechanical engineering. - ISSN 0039-2480 (Vol. 65, no. 11/12, Nov.-Dec. 2019, str. 690-700, SI 88)Type of material - article, component partPublish date - 2019Language - englishCOBISS.SI-ID - 16934939
Author
Zelič, Klemen |
Mele, Igor |
Pačnik, Ivo |
Moškon, Jože |
Gaberšček, Miran |
Katrašnik, Tomaž
Topics
Li-ion battery |
phase separating material |
multi-particle porous electrode |
memory effect |
litij ionske baterije |
spominski efekt |
katodni material s fazno separacijo |
večdelčna porozna elektroda
source: Strojniški vestnik = Journal of mechanical engineering. - ISSN 0039-2480 (Vol. 65, no. 11/12, Nov.-Dec. 2019, str. 690-700, SI 88)
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DRS, in which the journal is indexed
Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Zelič, Klemen | 35386 |
Mele, Igor | 39813 |
Pačnik, Ivo | 54541 |
Moškon, Jože | 28561 |
Gaberšček, Miran | 00582 |
Katrašnik, Tomaž | 23468 |
Source: Personal bibliographies
and: SICRIS
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