Nikola has been granted a patent for improved membrane electrode assemblies with cation-associating components. The invention involves an ionomer with a specific pKa value and a net polymer with a weakly-acidic functional group to treat contaminant cations. GlobalData’s report on Nikola 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 Nikola, Battery management systems was a key innovation area identified from patents. Nikola's grant share as of May 2024 was 28%. Grant share is based on the ratio of number of grants to total number of patents.
Membrane electrode assembly with cation-associating layer
A recently granted patent (Publication Number: US11984629B2) discloses a novel membrane electrode assembly designed for fuel cells. The assembly includes a proton exchange membrane situated between an anode catalyst layer and a cathode catalyst layer, with a cation-associating layer containing a net polymer with a weakly-acidic functional group that selectively binds to contaminant cations. This innovative design aims to enhance the efficiency and performance of fuel cells by effectively managing cation contaminants. The proton exchange membrane features a first ionomer, while the cation-associating layer is strategically positioned between the anode catalyst layer and an anode-side microporous layer, showcasing a unique configuration for optimal functionality.
Furthermore, the patent details variations in the weakly-acidic functional group, which can include phosphorous-based weak acids, nitrogen-based weak acids, or oxygen-based weak acids like phosphonic acid, acrylic acid, or maleic acid. The cation-associating layer may consist of different polymer compositions such as pure net layers, blended net layers, copolymers, or terpolymers, offering versatility in design. The membrane electrode assembly also incorporates a water-insoluble net polymer with a weakly-acidic functional group in another embodiment, demonstrating the adaptability of the technology. By integrating these innovative features, the patented membrane electrode assembly showcases advancements in fuel cell technology, emphasizing improved performance, efficiency, and contaminant management in energy conversion processes.
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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.
