格隆汇12月22日丨华阳股份(600348.SH)在投资者互动平台表示，公司生产的硬碳材料目前主要应用于 钠离子电池，暂时没有其他方面的应用。 ...

Core Viewpoint - The State Intellectual Property Office of China has reported that China Petroleum & Chemical Corporation (Sinopec), Sinopec Petroleum and Chemical Research Institute Co., Ltd., and Shanghai Jiao Tong University have applied for a patent titled "A Hard Carbon Material and Its Preparation Method, Battery Anode, and Sodium-Ion Battery" with publication number CN121020544A, filed on May 2024 [1] Group 1 - The patent application involves a hard carbon material and its preparation method, which is relevant for battery anodes and sodium-ion batteries [1] - The method described in the patent includes specific steps, starting with the precursor at a temperature T [1]

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].

Group 1 - The company has clarified that the annual production capacity of 20,000 tons of battery carbon materials (Phase I) primarily consists of hard carbon materials for both anodes and cathodes [2]