Core Viewpoint - The article discusses the advancements and commercialization of sodium-ion batteries in the industry, highlighting key players and their developments in both battery technology and materials. Group 1: Battery Developments - Several battery companies, including CATL and Haidong, have reported progress in sodium-ion battery technology, with CATL launching the "Sodium New" battery aimed at various applications [2][3][4]. - CATL's sodium-ion battery is designed for low-temperature performance and safety, targeting the passenger vehicle market and aiming to replace lead-acid batteries in heavy-duty vehicles [4][5]. - Haidong's sodium-ion battery has seen significant application in energy storage and backup power, with signed orders exceeding 200 million yuan, ranking fourth in production volume in the first half of the year [5][6]. Group 2: Market Expansion and Competition - The commercialization of sodium-ion batteries is expected to expand into the start-stop market by 2025, with various companies, including lead-acid manufacturers, entering the sodium-ion battery space [7][8]. - New entrants in the sodium-ion battery market include companies like Zhongna, Zero One Four, and others, indicating a growing competitive landscape [8]. Group 3: Material Developments - Leading companies in the sodium-ion battery materials sector include companies like Dangseng, Rongbai, and others, focusing on the development of sodium-ion cathode materials [9][10]. - Companies are cautiously scaling their production lines for sodium-ion materials, with capacities ranging from hundreds to thousands of tons, and a shift towards developing polyanion systems is anticipated by 2025 [10][11]. - Rongbai Technology has initiated a 6000-ton production line for polyanion cathode materials, while other companies are also advancing their material technologies to improve performance [10][11][12]. Group 4: Future Outlook - As the second half of 2025 approaches, competition in the sodium-ion battery market is expected to intensify, with various players targeting their respective market segments [14].