MUMBAI, India, May 29 -- Intellectual Property India has published a patent application (202631029218 A) filed by Narula Institute Of Technology, Kolkata, West Bengal, on March 11, for 'preparation of a polyethylene oxide-cellulose nanoparticle composite solid polymer electrolyte.'
Inventor(s) include Dr. Susmita Karan; and Dr. Rupa Bhattacharyya.
The application for the patent was published on May 29, under issue no. 22/2026.
According to the abstract released by the Intellectual Property India: "A solid polymer electrolyte and a green method for its preparation are disclosed, comprising a host matrix of high-molecular-weight polyethylene oxide (PEO), alkali metal salts, and cellulose nanoparticles as bio-based reinforcing fillers. The electrolyte is produced via a solution-casting technique using low-toxicity solvents, resulting in a free-standing, flexible film. The incorporation of 0.5-10 wt% cellulose nanoparticles effectively reduce the crystallinity of the PEO matrix, thereby enhancing segmental polymer chain movement and facilitating superior ionic transport at ambient temperatures. The resulting composite demonstrates significantly improved mechanical strength and thermal stability compared to conventional polymer electrolytes. This invention provides an environmentally sustainable and cost-effective alternative for use in lithium-ion and sodium-ion batteries, wearable electronics, and energy storage systems for electric vehicles."
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