Interfacial Area

Interfacial Area = {model_name} {float_list}

Description / Usage

This card is used to specify the product of interfacial area per unit volume by exchange current density (i.e., ai0) in the Butler-Volmer kinetic model of current density.

{model_name}	Name of the model for interfacial area, of which there are currently two available, namely CONSTANT and THERMAL_BATTERY.
CONSTANT	constant value of Interfacial Area <float1> - the value of the product of interfacial area per unit volume and exchange current density.
THERMAL_BATTERY	this option requires the following nine parameters: <float1> - Initial value of the product of interfacial area per unit volume by exchange current density. <float2> - Limit of electrode utilization beyond which ai0 = 0. <float3> - Activation energy for the Arrhenius dependency of ai0 on temperature. <float4> - Initial electrode/electrolyte temperature. <float5> - Cathode thickness. <float6> - Cathode porosity. <float7> - Molar volume of active cathode material. <float8> - Current density output by the thermal battery cell. <float9> - Number of electrons involved in cathode reactions.

Examples

The following are two sample input cards:

Interfacial Area = CONSTANT 1.0

Interfacial Area = THERMAL_BATTERY 20.0 0.375 20000.0 846.0 0.046 0.244 23.93 0.0246 4.0

Technical Discussion

No Discussion.

References

No References.