Zhi Tong Cai Jing·2026-01-26 08:12Core Viewpoint - Lithium batteries are essential energy components in commercial aerospace due to their high energy density, long cycle life, and good stability, with significant applications in rockets and spacecraft [1]. Group 1: Lithium Battery in Aerospace - Lithium batteries serve as the "energy heart" of modern aerospace, providing effective power supply to electronic systems and enhancing rocket payload capacity [1]. - Compared to traditional zinc-silver batteries, lithium batteries eliminate the need for electrolyte filling, allowing for better handling of mission delays and terminations [1]. Group 2: Case Studies - The Long March 6A rocket features four solid boosters equipped with eight electric servos powered by 270V high-voltage lithium batteries, marking a first in domestic launch vehicles [2]. - In January 2026, the Chinese space station will conduct in-orbit experiments with lithium batteries, aiming to overcome challenges related to gravity and electric field coupling for future battery system optimization [2]. Group 3: Solid-State Battery Performance - Solid-state batteries are well-suited for the harsh conditions of space, operating stably between -60°C and +85°C, with a cycle life of at least 3000 cycles, while meeting high energy density and safety requirements [3]. Group 4: Solid-State Battery Industry Trends - Leading domestic battery manufacturers are accelerating the launch of solid-state batteries and expanding into aerospace, with CATL's solid-state technology at the forefront [4]. - The "Longquan No. 2" solid-state battery from Yiwei Lithium Energy has an energy density of 300Wh/kg and has been in commercial aerospace development for two years [4]. - The industry is favoring sulfide routes for solid-state batteries due to their higher ionic conductivity and potential for future development [4]. Group 5: Global Competition in Solid-State Batteries - NASA plans to apply solvent-free dry-process high-performance solid-state batteries in key projects by 2028 [5]. - Japan's JAXA and Hitachi Shipbuilding have successfully tested solid-state lithium batteries in the International Space Station, demonstrating long-term stability and reliability [6]. - China's Electric Power Blue Sky has developed a fifth-generation space lithium battery with an energy density of 300Wh/kg, meeting the 15-year lifespan requirement for high-orbit satellites [6]. Group 6: Key Companies and Technologies - Key equipment manufacturers include Honggong Technology, Naconor, Huazi Technology, Xianhui Technology, and Xiandao Intelligent [7]. - Key electrolyte companies include Xiamen Tungsten New Energy, Guoci Materials, Boyuan Shares, and Shanghai Washba [7]. - Battery companies of interest include CATL and Yiwei Lithium Energy [7].