Advanced porous electrode modelling framework based on more consistent virtual representation of the electrode topology

Mele, Igor (avtor), Pačnik, Ivo (avtor), Zelič, Klemen (avtor), Moškon, Jože (avtor), Katrašnik, Tomaž (avtor)

The paper proposes an advanced continuum level modelling framework characterized by a more consistent virtual representation of electrode topology to enhance prediction capability and generality of porous electrode theory based models. The proposed modelling framework, therefore, establishes the missing link between the mesoscopic scale with a detailed 3D representation of electrode topology and the continuum single cell scale, where interrelation to the real electrode topology was missing. This link is established by elaborating a unified approach for modelling materials with significantly different topologies of active material by virtually creating agglomerates, representing secondary particles, from primary particles. Proposed approach relies on multi-particle size distribution of primary particles and particle-to-particle connectivity. Generality of the proposed modelling framework is demonstrated by simulating LFP and NMC materials featuring significantly different electrode topologies by the same modelling framework while adapting only virtual representation of electrode topologies and intrinsic material properties. Credibility of the proposed modelling framework is confirmed through good agreement with experimental results for various discharge tests. Insightful simulation results also reveal background of the topologically driven low Li utilization at high current densities of the LFP material and topologically driven voltage response difference during the memory effect of different LFP materials.

• Jezik: Angleški jezik
• Ključne besede: batteries, Li-Ion, porous electrode models, electrodes topology, NCM, LFP, memory effect
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FS - Fakulteta za strojništvo
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2020
• Št. strani: 18 str.
• Številčenje: Vol. 167, no. 6, art. 060531
• PID: 20.500.12556/RUL-125942
• UDK: 621.352(045)
• ISSN pri članku: 1945-7111
• DOI: 10.1149/1945-7111/ab84fb
• COBISS.SI-ID: 17157915
• Datum objave v RUL: 09.04.2021

Gradivo je del revije

• Naslov: Journal of the electrochemical society
• Založnik: Electrochemical Society
• ISSN: 1945-7111
• COBISS.SI-ID: 22698791

Licence

• Licenca: CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by/4.0/deed.sl
• Opis: To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.
• Začetek licenciranja: 14.04.2020

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: baterije, Li-ion, porozne elektrode, topologija elektrod, NCM, LFP, spominski pojavi