This is a code repository for 'A Critical Evaluation of Using Physics-Informed Neural Networks for Simulating Voltammetry: Strengths, Weaknesses and Best Practices' submitted to Journal of Electroanalytical Chemistry.

Python 3.7 and above is suggested to run the program. The neural networks was developed and tested with Tensorflow 2.3. To install required packages, run

$ pip install -r requirement.txt

The code repository contains eight folders, for the eight test cases mentioned in paper.

• Chronoamperometry at a Macro Electrode: Highlights the importance of non-zero conditioning time.
• Chronoamperometry at a Spherical Electrode: Mathematical transformation of PDEs to an easier form may increase the performance of PINN.
• Cyclic voltammetry at a Spherical Electrode: Sequence to sequence training for simulation of long time duration.
• Cyclic voltammetry at a Macro Electrode: Adaptive weights algorithm.
• Chronoamperometry at a microband electrode: effect of batch size on learning.
• Chronoamperometry at a cube electrode: overlapping domain decomposition increases the accuracy of prediction.
• Cyclic voltammetry at a cube electrode: Effects of learning rate scheduling on accuracy of prediction. Please note that running this program needs a very large RAM (~ 90 GB)
• Chronoamperometry at a microdisc electrode: Switch from cylindrical coordinates to Cartesian coordinates when facing gradient problems.

Please report any issues/bugs of the code in the discussion forum of the repository or contact the corresponding author of the paper

To cite, please refer to: (A Critical Evaluation of Using Physics-Informed Neural Networks for Simulating Voltammetry: Strengths, Weaknesses and Best Practices)