3D Lithium Air Model

Hello everyone,

I am trying to build a 3D Model of a Lithium-Air-battery based on the 1D Version from COMSOL's model library. Everytime I run the simulation i receive the following error after several hours:

Failed to find consistent initial values.
Last time step is not converged.
- Feature: Time-Dependent Solver 1 (sol1/t1)

What I have found in the board discussions from other users with similar issues so far is that this might be singularity, but I fail to identify it.

Any hints or help would be greatly appreciated.

Kindest regards,

Leo