MUMBAI, India, Oct. 5 -- Intellectual Property India has published a patent application (202621099522 A) filed by Indian Institute Of Technology Bombay on August 18, 2026, for “system And Method For Evaluating Coating-Specific Bipolar Plate-Gas Diffusion Layer Interfacial Characteristics”.
Inventors include Akshay Bhoir; and Prakash Chandra Ghosh.
The application for the patent was published on October 02, 2026, under issue no. 40/2026.
Abstract: ABSTRACT “System and Method for Evaluating Coating-Specific Bipolar Plate-Gas Diffusion Layer Interfacial Characteristics” The present invention discloses a system (1000) and method for evaluating coating specific bipolar plate (BPP)-gas diffusion layer (GDL) interfacial characteristics. The method comprises preparing a baseline GDL specimen configuration and a coated BPP-GDL specimen configuration; positioning each specimen configuration between an upper platen (102) and a lower platen (104) of a compression assembly (100); applying a progressively controlled compressive load using a hydraulic actuator (106); synchronously measuring applied force using a load cell (110), hydraulic pressure using a pressure transmitter (120), instantaneous through-plane displacement using a displacement sensor (130), and electrical resistance using an electrical resistance measurement assembly (140); determining GDL compression from the displacement; calculating contact pressure from the applied force and an interfacial contact area; calculating interfacial contact resistance using baseline and coated-specimen electrical resistances; and correlating the contact pressure, GDL compression, and interfacial contact resistance to generate coating-specific interfacial characteristics of the coated bipolar plate. FIG. 2
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