Contemporary Amperex Technology. has filed a patent for an electrode plate and a method for its preparation. The electrode plate includes a current collector and an electrode material layer with a compound that improves battery performance by increasing porosity, uniform distribution of pores, electrolytic solution retention, and reducing direct-current resistance. 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 September 2023 was 35%. Grant share is based on the ratio of number of grants to total number of patents.
High porosity electrode plate with improved battery performance
A recently filed patent (Publication Number: US20230317948A1) describes an electrode plate for use in batteries. The electrode plate consists of a current collector and an electrode material layer, which includes an active material and a conductive agent. The electrode material layer also contains a compound represented by Formula (I). The compound is defined by certain characteristics, including the presence of specific groups such as hydrogen, alkane groups, alkenyl groups, and phenyl groups. The compound is used in the electrode material layer at a weight percentage ranging from 0.1% to 20%. The electrode plate can be a negative electrode plate and the active material in the electrode material layer can be selected from various materials such as artificial graphite, natural graphite, soft carbon, hard carbon, silicon-based material, tin-based material, and lithium titanium oxide.
The patent also discloses a method for preparing the electrode plate. The method involves dry-mixing the active material, conductive agent, and the compound represented by Formula (I) to form a dry mixture. This dry mixture is then mixed with water and a binder at a first temperature lower than 35°C to obtain an electrode material slurry. The solid content of the slurry is between 40% and 70% by weight, and the compound represented by Formula (I) is used in the slurry at a weight percentage ranging from 0.1% to 20%. The drying process is performed at a temperature higher than 45°C, and deionized water is used in the preparation method. The resulting electrode plate can be a negative electrode plate, and the active material in the electrode material layer can be selected from the same materials mentioned earlier.
Additionally, the patent describes the use of the compound represented by Formula (I) as a pore-forming agent. The compound is configured to form pores in the electrode material layer of the electrode plate, which can again be a negative electrode plate.
Overall, this patent presents an electrode plate design and a method for its preparation, which can be used in batteries. The inclusion of the compound represented by Formula (I) in the electrode material layer and its use as a pore-forming agent may contribute to improved battery performance. The patent also highlights the various materials that can be used as the active material in the electrode material layer, providing flexibility in battery design and application.
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