Flexoelectric Effect Impact on the Hysteretic Dynamics of the Local Electromechanical Response of Mixed Ionic-Electronic Conductors

Morozovska, Anna N.; Glinchuk, M. D.; Varenyk, O.V.; Udod, A.; Scherbakov, Christian M.; Kalinin, Sergei V.

doi:10.15407/ujpe62.04.0326

Cited by 2 publications

(3 citation statements)

References 40 publications

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“…71 This effect controls the volume occupied by ion, proton or vacancy. 46,51 Equation 6 captures finite size effect of ions in a solution in which ions and solvent molecules are assumed to occupy sites of a lattice of unit cell size a. 37,42 This equation is derived by minimizing free energy functional in which size effect of ions are included based on lattice-gas model.…”

Section: ∂T ∂Xmentioning

confidence: 99%

“…[46][47][48][49][50] Mainly, this effect is considered in the investigation of nonlinear electric transport and electromechanical response of mixed ionic-electronic conductors such as solid electrolytes. 46,51 These types of studies were initiated by Kornyshev and Vorotyntsev. 52 Recognizing the importance of potential non-idealities arising from the finite size effect of the ions, recently and building on the model of Hu et al, 35 Kumar et al 1 incorporated this effect in a mathematical model of the cation interdiffusion in SOFC across the electrode-electrolyte interface.…”

Section: Introductionmentioning

confidence: 99%

“…46–50 Mainly, this effect is considered in the investigation of non-linear electric transport and electromechanical response of mixed ionic-electronic conductors such as solid electrolytes. 46,51 These types of studies were initiated by Kornyshev and Vorotyntsev. 52…”

Section: Introductionmentioning

confidence: 99%

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Combined effect of temperature difference across interface and finite size of the ions on interdiffusion in SOFC

Kumar

Chakraborty

Das

2023

Proceedings of the Institution of Mechanical Engineers, Part A:

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In the present study, the combined effect of the temperature difference across the electrode-electrolyte interface and the finite size of ions non-idealities on the cation interdiffusion is investigated using a mathematical model. Here, we build on and add significantly to our previous work 1 where the study was limited only to the finite effect of ions. Considering each non-ideality/effect separately, the diffusion of manganese (Mn3+) ions decreases about 50 nm for a temperature difference (∆ T) of 50 K, and 31 nm for a finite size parameter ( ν) of 1.826. However, it is decreased by 54 nm considering both effects combindly for ∆ T = 50 K and ν = 1.75. Further, under individual effects, the highest electric potential drop is 0.32 for a ∆ T = 50 K and 0.27 for a ν = 1.75. Under combined effects, the electric potential drop is about 0.85 for ∆ T = 50 K and ν = 1.75. A significant variation is observed in the diffusion of Zr4+, Y3+ and Mn3+ ions and the overall electric potential. It is anticipated that the consideration of these effects/non-idealities will help in the better understanding of cation interdiffusion, and contribute towards performance enhancement of SOFCs.

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