Nernst Layer Posted on 9th December 20158th October 2020 by ThePD (The Project Definition) Nernst Layer is the hypothetical thickness of the diffusion layer at the surface of an electrode. Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on LinkedIn (Opens in new window) Related Posted in Technology and tagged corrosion. ThePD (The Project Definition) ThePD has been developing the Preferred Project Definitions based on the actual project execution and operation experiences and knowledge with the Project Language, and sharing with you daily basis.