{
      "Header": {
            "BPX": "0.4.0",
            "Title": "Test case: blended electrode definition with two particle sizes but equivalent chemistry. Compare to nmc_pouch_cell_BPX.json in About:Energy open-source release.",
            "Model": "DFN"
      },
      "Parameterisation": {
            "Cell": {
                  "Ambient temperature [K]": 298.15,
                  "Initial temperature [K]": 298.15,
                  "Reference temperature [K]": 298.15,
                  "Lower voltage cut-off [V]": 2.7,
                  "Upper voltage cut-off [V]": 4.2,
                  "Nominal cell capacity [A.h]": 12.5,
                  "Specific heat capacity [J.K-1.kg-1]": 913,
                  "Thermal conductivity [W.m-1.K-1]": 2.04,
                  "Density [kg.m-3]": 1847,
                  "Electrode area [m2]": 0.016808,
                  "Number of electrode pairs connected in parallel to make a cell": 34,
                  "External surface area [m2]": 0.0379,
                  "Volume [m3]": 0.000128
            },
            "Electrolyte": {
                  "Initial concentration [mol.m-3]": 1000,
                  "Cation transference number": 0.2594,
                  "Conductivity [S.m-1]": "0.1297 * (x / 1000) ** 3 - 2.51 * (x / 1000) ** 1.5 + 3.329 * (x / 1000)",
                  "Diffusivity [m2.s-1]": "8.794e-11 * (x / 1000) ** 2 - 3.972e-10 * (x / 1000) + 4.862e-10",
                  "Conductivity activation energy [J.mol-1]": 17100,
                  "Diffusivity activation energy [J.mol-1]": 17100
            },
            "Negative electrode": {
                  "Particle radius [m]": 4.12e-06,
                  "Thickness [m]": 5.62e-05,
                  "Diffusivity [m2.s-1]": 2.728e-14,
                  "OCP [V]": "9.47057878e-01 * exp(-1.59418743e+02  * x) - 3.50928033e+04 + 1.64230269e-01 * tanh(-4.55509094e+01 * (x - 3.24116012e-02 )) + 3.69968491e-02 * tanh(-1.96718868e+01 * (x - 1.68334476e-01)) + 1.91517003e+04 * tanh(3.19648312e+00 * (x - 1.85139824e+00)) + 5.42448511e+04 * tanh(-3.19009848e+00 * (x - 2.01660395e+00))",
                  "Entropic change coefficient [V.K-1]": "(-0.1112 * x + 0.02914 + 0.3561 * exp(-((x - 0.08309) ** 2) / 0.004616)) / 1000",
                  "Conductivity [S.m-1]": 0.222,
                  "Surface area per unit volume [m-1]": 499522,
                  "Porosity": 0.253991,
                  "Transport efficiency": 0.128,
                  "Reaction rate constant [mol.m-2.s-1]": 5.199e-06,
                  "Minimum stoichiometry": 0.005504,
                  "Maximum stoichiometry": 0.75668,
                  "Maximum concentration [mol.m-3]": 29730,
                  "Diffusivity activation energy [J.mol-1]": 30000,
                  "Reaction rate constant activation energy [J.mol-1]": 55000
            },
            "Positive electrode": {
                  "Thickness [m]": 5.23e-05,
                  "Conductivity [S.m-1]": 0.789,
                  "Porosity": 0.277493,
                  "Transport efficiency": 0.1462,                  
                  "Particle": {
                        "Large Particles": {
                              "Diffusivity [m2.s-1]": 3.2e-14,
                              "Particle radius [m]": 8e-06,
                              "OCP [V]": "-3.04420906 * x + 10.04892207 - 0.65637536 * tanh(-4.02134095 * (x - 0.80063948)) + 4.24678547 * tanh(12.17805062 * (x - 7.57659337)) - 0.3757068 * tanh(59.33067782 * (x - 0.99784492))",
                              "Entropic change coefficient [V.K-1]": -1e-4,
                              "Surface area per unit volume [m-1]": 186331,
                              "Reaction rate constant [mol.m-2.s-1]": 2.305e-05,
                              "Minimum stoichiometry": 0.42424,
                              "Maximum stoichiometry": 0.96210,
                              "Maximum concentration [mol.m-3]": 46200,
                              "Diffusivity activation energy [J.mol-1]": 15000,
                              "Reaction rate constant activation energy [J.mol-1]": 3500
                        },
                        "Small Particles": {
                              "Diffusivity [m2.s-1]": 3.2e-14,
                              "Particle radius [m]": 1e-06,
                              "OCP [V]": "-3.04420906 * x + 10.04892207 - 0.65637536 * tanh(-4.02134095 * (x - 0.80063948)) + 4.24678547 * tanh(12.17805062 * (x - 7.57659337)) - 0.3757068 * tanh(59.33067782 * (x - 0.99784492))",
                              "Entropic change coefficient [V.K-1]": -1e-4,
                              "Surface area per unit volume [m-1]": 496883,
                              "Reaction rate constant [mol.m-2.s-1]": 2.305e-05,
                              "Minimum stoichiometry": 0.42424,
                              "Maximum stoichiometry": 0.96210,
                              "Maximum concentration [mol.m-3]": 46200,
                              "Diffusivity activation energy [J.mol-1]": 15000,
                              "Reaction rate constant activation energy [J.mol-1]": 3500
                        }
                  }
            },
            "Separator": {
                  "Thickness [m]": 2e-05,
                  "Porosity": 0.47,
                  "Transport efficiency": 0.3222
            }
      }
}