CATL(SZ:300750) Sou Hu Cai Jing·2025-10-31 22:01Core Insights - Contemporary Amperex Technology Co., Limited (CATL) has filed an international patent application for a positive electrode active material, positive electrode sheet, cylindrical battery cell, battery, and electric device, with the application number PCT/CN2025/072671, published internationally on October 30, 2025 [1][2]. Patent Details - The patent application includes a positive electrode active material that consists of a core portion made of lithium-containing transition metal oxide and a coating layer that covers part of the core's surface, which includes polymers such as fluoropolymers and oxygen-containing polymers [2]. - The application aims to reduce battery swelling and improve cycle performance when applied to batteries [2]. R&D Investment - In 2023, CATL has filed a total of 1,267 international patent applications, representing a 19.53% 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, which is a year-on-year increase of 17.48% [1].