南都电源：公司研制的钠离子电池，能量密度140Wh/kg，具备量产能力

Core Viewpoint - The company has made significant progress in the development of sodium-ion batteries, indicating readiness for mass production with advanced specifications [1] Group 1: Product Development - The sodium-ion battery developed by the company features a high-stability sodium positive electrode and a high-pressure hard carbon negative electrode [1] - The energy density of the sodium-ion battery is reported to be 140 Wh/kg [1] - The battery has a cycle life of 3000 cycles and supports 5C charge and discharge rates [1] - The battery is designed to operate in extreme cold environments, withstanding temperatures as low as -40°C [1] Group 2: Production Capabilities - The company has established a pilot production line for the sodium-ion battery, indicating readiness for scaling up production [1]