Xylem has patented a flow battery with a rechargeable cell, featuring an anion exchange membrane less than 100 µm thick and low diffusivity. The innovative design allows for efficient storage and use of electric charge. GlobalData’s report on Xylem gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Xylem, was a key innovation area identified from patents. Xylem's grant share as of February 2024 was 54%. Grant share is based on the ratio of number of grants to total number of patents.
Flow battery with thin anion exchange membrane for ion conductivity
A recently granted patent (Publication Number: US11929533B2) discloses a flow battery design that includes at least one rechargeable cell with an anolyte compartment holding a first electrolyte and a catholyte compartment holding a second electrolyte. An anion exchange membrane, made from a microporous substrate coated with a specific monomer, is positioned between the compartments to facilitate ion conduction. The membrane is fully cross-linked, has a thickness of less than 100 µm, and exhibits a steady state diffusivity of less than 0.4 ppm/hr/cm2 concerning the cation species present in the electrolytes.
The flow battery design further specifies the use of metal cation species like zinc, copper, cerium, or vanadium, with the anion exchange membrane having a useful life of at least 12 weeks and a resistance within a defined range. The patent also includes methods for facilitating the use and storage of electric charge in the flow battery, emphasizing the installation of the anion exchange membrane and providing operational instructions. Additionally, compatibility with high voltage direct current (HVDC) transmission lines and automobiles is highlighted, showcasing the versatility and potential applications of this innovative flow battery technology.
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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
