MUMBAI, India, Jan. 9 -- Intellectual Property India has published a patent application (202541134243 A) filed by Indian Institute Of Technology, Chennai, Tamil Nadu, on Dec. 31, 2025, for 'architecture and fabrication of high-performance and long-durable tri-layer gas diffusion electrode for scalable metal-air batteries.'

Inventor(s) include Aravind Kumar Chandiran; Akhil Kongara; Gunjan Kapadia; and Nandhini Shanmugam.

The application for the patent was published on Jan. 9, under issue no. 02/2026.

According to the abstract released by the Intellectual Property India: "Architecture and fabrication of high-performance and long-durable tri-layer gas diffusion electrode for scalable metal-air batteries The present invention discloses a durable tri-layer gas diffusion electrode (GDE) architecture for metal-air batteries and its fabrication method. The GDE features a dual-coated water-resistant layer (1) on a substrate (5), a single-side coated catalyst layer (2), and a laminated membrane or separator (3). The fabrication process optimizes binder viscosity, density, and slurry loading to enhance interlayer adhesion and establish a stable triple-phase boundary. This specific architecture prevents delamination, bulging, and electrolyte leakage while minimizing discharge product crossover. By utilizing a hot-calendering assembly technique and requiring minimal catalyst loading, the invention provides a cost-effective, leak-resistant, and mechanically robust electrode capable of sustained high-performance operation."

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