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Updated parameter file and example notebook for lithium plating on composite electrodes #4691
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@@ -237,6 +237,184 @@ | |
return m_ref * arrhenius * c_e**0.5 * c_s_surf**0.5 * (c_s_max - c_s_surf) ** 0.5 | ||
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def graphite_plating_exchange_current_density_OKane2020(c_e, c_Li, T): | ||
""" | ||
Exchange-current density for Li plating reaction [A.m-2]. | ||
References | ||
---------- | ||
.. [1] O’Kane, Simon EJ, Ian D. Campbell, Mohamed WJ Marzook, Gregory J. Offer, and | ||
Monica Marinescu. "Physical origin of the differential voltage minimum associated | ||
with lithium plating in Li-ion batteries." Journal of The Electrochemical Society | ||
167, no. 9 (2020): 090540. | ||
Parameters | ||
---------- | ||
c_e : :class:`pybamm.Symbol` | ||
Electrolyte concentration [mol.m-3] | ||
c_Li : :class:`pybamm.Symbol` | ||
Plated lithium concentration [mol.m-3] | ||
T : :class:`pybamm.Symbol` | ||
Temperature [K] | ||
Returns | ||
------- | ||
:class:`pybamm.Symbol` | ||
Exchange-current density [A.m-2] | ||
""" | ||
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k_plating = pybamm.Parameter( | ||
"Primary: Lithium plating kinetic rate constant [m.s-1]" | ||
) | ||
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return pybamm.constants.F * k_plating * c_e | ||
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def graphite_stripping_exchange_current_density_OKane2020(c_e, c_Li, T): | ||
""" | ||
Exchange-current density for Li stripping reaction [A.m-2]. | ||
References | ||
---------- | ||
.. [1] O’Kane, Simon EJ, Ian D. Campbell, Mohamed WJ Marzook, Gregory J. Offer, and | ||
Monica Marinescu. "Physical origin of the differential voltage minimum associated | ||
with lithium plating in Li-ion batteries." Journal of The Electrochemical Society | ||
167, no. 9 (2020): 090540. | ||
Parameters | ||
---------- | ||
c_e : :class:`pybamm.Symbol` | ||
Electrolyte concentration [mol.m-3] | ||
c_Li : :class:`pybamm.Symbol` | ||
Plated lithium concentration [mol.m-3] | ||
T : :class:`pybamm.Symbol` | ||
Temperature [K] | ||
Returns | ||
------- | ||
:class:`pybamm.Symbol` | ||
Exchange-current density [A.m-2] | ||
""" | ||
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k_plating = pybamm.Parameter( | ||
"Primary: Lithium plating kinetic rate constant [m.s-1]" | ||
) | ||
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return pybamm.constants.F * k_plating * c_Li | ||
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def graphite_SEI_limited_dead_lithium_OKane2022(L_sei): | ||
""" | ||
Decay rate for dead lithium formation [s-1]. | ||
References | ||
---------- | ||
.. [1] Simon E. J. O'Kane, Weilong Ai, Ganesh Madabattula, Diega Alonso-Alvarez, | ||
Robert Timms, Valentin Sulzer, Jaqueline Sophie Edge, Billy Wu, Gregory J. Offer | ||
and Monica Marinescu. "Lithium-ion battery degradation: how to model it." | ||
Physical Chemistry: Chemical Physics 24, no. 13 (2022): 7909-7922. | ||
Parameters | ||
---------- | ||
L_sei : :class:`pybamm.Symbol` | ||
Total SEI thickness [m] | ||
Returns | ||
------- | ||
:class:`pybamm.Symbol` | ||
Dead lithium decay rate [s-1] | ||
""" | ||
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gamma_0 = pybamm.Parameter("Primary: Dead lithium decay constant [s-1]") | ||
L_inner_0 = pybamm.Parameter("Primary: Initial inner SEI thickness [m]") | ||
L_outer_0 = pybamm.Parameter("Primary: Initial outer SEI thickness [m]") | ||
L_sei_0 = L_inner_0 + L_outer_0 | ||
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gamma = gamma_0 * L_sei_0 / L_sei | ||
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return gamma | ||
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def silicon_plating_exchange_current_density_OKane2020(c_e, c_Li, T): | ||
""" | ||
Exchange-current density for Li plating reaction [A.m-2]. | ||
References | ||
---------- | ||
.. [1] O’Kane, Simon EJ, Ian D. Campbell, Mohamed WJ Marzook, Gregory J. Offer, and | ||
Monica Marinescu. "Physical origin of the differential voltage minimum associated | ||
with lithium plating in Li-ion batteries." Journal of The Electrochemical Society | ||
167, no. 9 (2020): 090540. | ||
Parameters | ||
---------- | ||
c_e : :class:`pybamm.Symbol` | ||
Electrolyte concentration [mol.m-3] | ||
c_Li : :class:`pybamm.Symbol` | ||
Plated lithium concentration [mol.m-3] | ||
T : :class:`pybamm.Symbol` | ||
Temperature [K] | ||
Returns | ||
------- | ||
:class:`pybamm.Symbol` | ||
Exchange-current density [A.m-2] | ||
""" | ||
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k_plating = pybamm.Parameter( | ||
"Secondary: Lithium plating kinetic rate constant [m.s-1]" | ||
) | ||
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return pybamm.constants.F * k_plating * c_e | ||
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def silicon_stripping_exchange_current_density_OKane2020(c_e, c_Li, T): | ||
""" | ||
Exchange-current density for Li stripping reaction [A.m-2]. | ||
References | ||
---------- | ||
.. [1] O’Kane, Simon EJ, Ian D. Campbell, Mohamed WJ Marzook, Gregory J. Offer, and | ||
Monica Marinescu. "Physical origin of the differential voltage minimum associated | ||
with lithium plating in Li-ion batteries." Journal of The Electrochemical Society | ||
167, no. 9 (2020): 090540. | ||
Parameters | ||
---------- | ||
c_e : :class:`pybamm.Symbol` | ||
Electrolyte concentration [mol.m-3] | ||
c_Li : :class:`pybamm.Symbol` | ||
Plated lithium concentration [mol.m-3] | ||
T : :class:`pybamm.Symbol` | ||
Temperature [K] | ||
Returns | ||
------- | ||
:class:`pybamm.Symbol` | ||
Exchange-current density [A.m-2] | ||
""" | ||
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k_plating = pybamm.Parameter( | ||
"Secondary: Lithium plating kinetic rate constant [m.s-1]" | ||
) | ||
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return pybamm.constants.F * k_plating * c_Li | ||
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def silicon_SEI_limited_dead_lithium_OKane2022(L_sei): | ||
""" | ||
Decay rate for dead lithium formation [s-1]. | ||
References | ||
---------- | ||
.. [1] Simon E. J. O'Kane, Weilong Ai, Ganesh Madabattula, Diega Alonso-Alvarez, | ||
Robert Timms, Valentin Sulzer, Jaqueline Sophie Edge, Billy Wu, Gregory J. Offer | ||
and Monica Marinescu. "Lithium-ion battery degradation: how to model it." | ||
Physical Chemistry: Chemical Physics 24, no. 13 (2022): 7909-7922. | ||
Parameters | ||
---------- | ||
L_sei : :class:`pybamm.Symbol` | ||
Total SEI thickness [m] | ||
Returns | ||
------- | ||
:class:`pybamm.Symbol` | ||
Dead lithium decay rate [s-1] | ||
""" | ||
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gamma_0 = pybamm.Parameter("Secondary: Dead lithium decay constant [s-1]") | ||
L_inner_0 = pybamm.Parameter("Secondary: Initial inner SEI thickness [m]") | ||
L_outer_0 = pybamm.Parameter("Secondary: Initial outer SEI thickness [m]") | ||
L_sei_0 = L_inner_0 + L_outer_0 | ||
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gamma = gamma_0 * L_sei_0 / L_sei | ||
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return gamma | ||
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def electrolyte_diffusivity_Nyman2008(c_e, T): | ||
""" | ||
Diffusivity of LiPF6 in EC:EMC (3:7) as a function of ion concentration. The data | ||
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@@ -326,6 +504,31 @@ | |
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return { | ||
"chemistry": "lithium_ion", | ||
# lithium plating | ||
# Plating parameters referred from OKane2022 | ||
"Lithium metal partial molar volume [m3.mol-1]": 1.3e-05, | ||
"Primary: Lithium plating kinetic rate constant [m.s-1]": 1e-09, | ||
"Primary: Exchange-current density for plating [A.m-2]" | ||
"": graphite_plating_exchange_current_density_OKane2020, | ||
"Primary: Exchange-current density for stripping [A.m-2]" | ||
"": graphite_stripping_exchange_current_density_OKane2020, | ||
"Primary: Initial plated lithium concentration [mol.m-3]": 0.0, | ||
"Primary: Typical plated lithium concentration [mol.m-3]": 1000.0, | ||
"Primary: Lithium plating transfer coefficient": 0.65, | ||
"Primary: Dead lithium decay constant [s-1]": 1e-06, | ||
"Primary: Dead lithium decay rate [s-1]" | ||
"": graphite_SEI_limited_dead_lithium_OKane2022, | ||
"Secondary: Lithium plating kinetic rate constant [m.s-1]": 1e-09, | ||
"Secondary: Exchange-current density for plating [A.m-2]" | ||
"": silicon_plating_exchange_current_density_OKane2020, | ||
"Secondary: Exchange-current density for stripping [A.m-2]" | ||
"": silicon_stripping_exchange_current_density_OKane2020, | ||
"Secondary: Initial plated lithium concentration [mol.m-3]": 0.0, | ||
"Secondary: Typical plated lithium concentration [mol.m-3]": 1000.0, | ||
"Secondary: Lithium plating transfer coefficient": 0.65, | ||
"Secondary: Dead lithium decay constant [s-1]": 1e-06, | ||
"Secondary: Dead lithium decay rate [s-1]" | ||
There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. Are these parameters from the same paper as before? There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. These parameters are not from Chen2020. Currently, no definitive research papers are providing these parameters for composite electrodes. As a placeholder, we use parameters from OKane2022 assuming that the parameters for both phases are identical. Please note that these values are provisional and should be updated as and when new research becomes available. While this is not ideal, these parameters are essential to enable simulation and further development of degradation mechanisms in composite electrodes. There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. We prefer to keep named parameter sets true to what is in the paper (I know this isn't true in all cases, but we should aim for this). It would be better to add the extra parameters directly in the example notebook rather than modify the Chen 2020 set. |
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"": silicon_SEI_limited_dead_lithium_OKane2022, | ||
# sei | ||
"Primary: Ratio of lithium moles to SEI moles": 2.0, | ||
"Primary: SEI partial molar volume [m3.mol-1]": 9.585e-05, | ||
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@@ -338,6 +541,8 @@ | |
"Primary: SEI lithium interstitial diffusivity [m2.s-1]": 1e-20, | ||
"Primary: Lithium interstitial reference concentration [mol.m-3]": 15.0, | ||
"Primary: Initial SEI thickness [m]": 5e-09, | ||
"Primary: Initial inner SEI thickness [m]": 5e-09, | ||
"Primary: Initial outer SEI thickness [m]": 5e-09, | ||
"Primary: EC initial concentration in electrolyte [mol.m-3]": 4541.0, | ||
"Primary: EC diffusivity [m2.s-1]": 2e-18, | ||
"Primary: SEI kinetic rate constant [m.s-1]": 1e-12, | ||
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@@ -353,6 +558,8 @@ | |
"Secondary: SEI lithium interstitial diffusivity [m2.s-1]": 1e-20, | ||
"Secondary: Lithium interstitial reference concentration [mol.m-3]": 15.0, | ||
"Secondary: Initial SEI thickness [m]": 5e-09, | ||
"Secondary: Initial inner SEI thickness [m]": 5e-09, | ||
"Secondary: Initial outer SEI thickness [m]": 5e-09, | ||
"Secondary: EC initial concentration in electrolyte [mol.m-3]": 4541.0, | ||
"Secondary: EC diffusivity [m2.s-1]": 2e-18, | ||
"Secondary: SEI kinetic rate constant [m.s-1]": 1e-12, | ||
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This does not look like it should have been included
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Simulating plating on composite electrodes requires these parameters. Currently, there are no definitive research papers providing these parameters for composite electrodes. As a placeholder, we are using parameters from OKane2022 with the assumption that the parameters for both phases are identical.
Please note that these values are provisional and should be updated as and when new research becomes available. While this is not ideal, these parameters are essential to enable simulation and further development on degradation mechanisms in composite electrodes.
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I was referring to the file marked as copy. It looked like something mistakenly included
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Apologies, this is mistakenly included.