Khamwandee , C. and Saengprajak, A. 2026. Roles of Activation Functions on the Polarization Modeling for the 1.2 kWp Proton Exchange Membrane Fuel Cells: A Focus on ReLU, Sigmoid, and Tanh. Journal of Renewable Energy and Smart Grid Technology. 21, 1 (Apr. 2026), 107–118. DOI:https://doi.org/10.69650/rast.2026.263264.