Core Insights - Contemporary Amperex Technology Co., Limited (CATL) has filed an international patent application for a negative electrode sheet, secondary battery, electric device, and hard carbon material along with its preparation method, with the application number PCT/CN2024/118333 and international publication date set for November 6, 2025 [1][2]. Patent Details - The patent application was submitted on September 11, 2024, and is classified under several international patent classification codes including H01M 4/133 and H01M 10/0525 [2]. - The negative electrode sheet includes a current collector and a film layer made of hard carbon material, which consists of a core and a carbon coating layer. The core is made of porous carbon with specific pore volume and adsorption capacity requirements [2]. R&D Investment and Patent Activity - In 2023, CATL has published a total of 1,280 international patent applications, marking a 20.41% increase compared to the same period last year [1]. - The company invested 10.095 billion yuan in research and development in the first half of 2023, reflecting a year-on-year increase of 17.48% [1].

Core Viewpoint - Chongqing Changan Automobile Co., Ltd. has applied for a patent related to a silicon-carbon anode slurry, preparation method, anode sheet, and battery, indicating a focus on innovation in battery technology [1] Company Overview - Chongqing Changan Automobile Co., Ltd. was established in 1996 and is primarily engaged in the automotive manufacturing industry [1] - The company has a registered capital of 992,179.9422 thousand RMB [1] - It has invested in 119 enterprises and participated in 5,000 bidding projects [1] - The company holds 3,129 trademark records and 5,000 patent records, along with 1,052 administrative licenses [1] Patent Details - The patent application, published as CN 120749125 A, was filed on August 2025 [1] - The patent involves a process that includes mixing sodium carboxymethyl cellulose, polyacrylic acid, and water to create a mixed gel, followed by the addition of a conductive agent and other materials to produce a silicon-carbon anode slurry [1]