Sunwoda has introduced its latest “Xin·Bixiao” polymer all-solid-state battery, achieving an energy density of 400 Wh/kg and a cycle life of 1,200 cycles under ultra-low external pressure below 1 MPa. The announcement was made at the 2025 New Energy Battery Industry Development Conference.
The company plans to complete a 0.2 GWh pilot production line for polymer solid-state cells by the end of this year. In parallel, Sunwoda has developed and tested laboratory samples of lithium-metal super batteries that reach an energy density of 520 Wh/kg, according to a Sunwoda executive cited by local media.
In July of last year, Xu Zhongling, vice president of research and development at Sunwoda, noted that the company had already built all-solid-state batteries with a capacity of 20 Ah and energy densities exceeding 400 Wh/kg. Construction of a mass-production line is underway, with output expected to reach 1 GWh by 2026.
Looking ahead, Sunwoda aims to produce laboratory samples of all-solid-state batteries surpassing 700 Wh/kg by 2027. Through ongoing innovation, the company anticipates reducing the cost of polymer-based all-solid-state cells to 2 RMB per Wh by 2026, bringing them closer in cost to semi-solid-state batteries.
Elsewhere in the sector, Chery Automobile showcased an all-solid-state battery module on October 18, reporting a cell energy density of up to 600 Wh/kg and projecting an electric-vehicle range of 1,200–1,300 kilometers. Chery plans to begin vehicle integration testing of its solid-state batteries in 2027.
Sunwoda’s advancements reflect a growing focus on solid-state battery technologies, which promise higher energy densities, improved safety and longer lifespans compared with traditional liquid-electrolyte cells. As major manufacturers push toward commercializing these innovations, pilot production lines and lab-scale demonstrations will be critical steps in scaling up for the electric-vehicle and energy-storage markets.
Source: CNEV Post
