update gm cells parameters

js1tr3 · Sep 6, 2023 · 9c4206e · 9c4206e
1 parent a210a87
commit 9c4206e
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diff --git a/.../parameters/lithium_ion/positive_electrodes/NMC_UMBL_Siegel2022/NMC_diffusivity_Siegel.py b/.../parameters/lithium_ion/positive_electrodes/NMC_UMBL_Siegel2022/NMC_diffusivity_Siegel.py
@@ -23,7 +23,7 @@ def NMC_diffusivity_Siegel(sto, T):
         Solid diffusivity
     """
 
-    D_ref = 8 * 10 ** (-15)
+    D_ref = 4.4 * 10 ** (-15) # 4.4 × 10 −11 cm 2 s −1
     E_D_s = 18550
     arrhenius = exp(E_D_s / constants.R * (1 / 298.15 - 1 / T))
 

diff --git a/pybamm/input/parameters/lithium_ion/positive_electrodes/NMC_UMBL_Siegel2022/parameters.csv b/pybamm/input/parameters/lithium_ion/positive_electrodes/NMC_UMBL_Siegel2022/parameters.csv
@@ -11,7 +11,7 @@ Positive electrode OCP [V],[function]NMC_ocp_Siegel,Siegel 2022, Measured
 # Microstructure,,,
 Positive electrode porosity,0.3,Siegel2022,
 Positive electrode active material volume fraction,0.6818,Siegel2022,rest is binder
-Positive particle radius [m],10E-06,Siegel2022,guess
+Positive particle radius [m],2.2E-06,Siegel2022,based on D50 targray specification of SNMC03015 / NMC622 (T61RS) Cathode material.
 Positive electrode Bruggeman coefficient (electrode),1.5,Peyman MPM,
 Positive electrode Bruggeman coefficient (electrolyte),1.5,Peyman MPM,
 Positive electrode transport efficiency,0.16,
@@ -30,4 +30,4 @@ Positive electrode density [kg.m-3],3100,Peyman MPM, cell lumped value
 # Thermal parameters,,,
 Positive electrode specific heat capacity [J.kg-1.K-1],1100,Peyman MPM, cell lumped value
 Positive electrode thermal conductivity [W.m-1.K-1],2.1,,no info from Peyman MPM
-Positive electrode OCP entropic change [V.K-1],[function]NMC_entropic_change_Siegel,Peyman MPM
+Positive electrode OCP entropic change [V.K-1],[function]NMC_entropic_change_Siegel,Peyman MPM