Contemporary Amperex Technology has been granted a patent for a negative electrode plate featuring two active layers. The first layer contains an active material with specific powder orientation index and capacity values, while the second layer has distinct values, enhancing performance in energy storage applications. GlobalData’s report on Contemporary Amperex Technology 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 Contemporary Amperex Technology, Hydrogen storage alloys was a key innovation area identified from patents. Contemporary Amperex Technology's grant share as of June 2024 was 32%. Grant share is based on the ratio of number of grants to total number of patents.
Negative electrode plate with specific active material properties
The granted patent US12046753B2 outlines a novel negative electrode plate designed for use in secondary batteries. The electrode plate features a current collector and two active layers, each containing distinct active materials. The first active layer, which is positioned on at least one surface of the current collector, contains an active material with a powder orientation index (OI) value ranging from 8 to 32 and a gram capacity between 290 to 350 mAh/g. The second active layer, located on the outer surface of the first layer, contains a different active material with a powder OI value between 2 to 7 and a gram capacity ranging from 350 to 368 mAh/g. The patent also specifies various ratios and density parameters for the active materials, including their weight percentages, porosity, and thickness after cold-calendering.
Further claims detail the structural and compositional characteristics of the negative electrode plate. The weight percent of the active materials in both layers is specified to be between 92.0 wt % to 98.99 wt %. The porosity of the plate is defined to be between 18.0% to 40.2%, with a compacted density ranging from 1.45 to 1.90 g/cm³. Additionally, the patent describes the potential inclusion of conductive agents, binders, and thickeners in the active layers. The active materials are primarily based on artificial graphite, potentially combined with other carbon materials. The patent also encompasses a secondary battery and a battery module that incorporates the described negative electrode plate, indicating its applicability in energy storage solutions.
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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.
