News on China's scientific and technological development.

SIB record​

​

Energy Density Breaks 348.5 Wh/kg! Zhaona New Energy's Solid-State Sodium-ion Battery Sets New Industry Record​

Published: Dec 31, 2025 14:36
Source: SMM
Share
Save

On December 31, 2025, Sodium Technology announced that its large-format (above 25 Ah) all-solid-state sodium-ion battery cell achieved an energy density of 348.5 Wh/kg, certified by the China Automotive Technology and Research Center. The battery utilizes a "high-specific-energy layered oxide cathode + anode-free" technology. The cathode, optimized through atomic-level design, combined with the anode-free structure, significantly enhances energy density and cycle performance. This breakthrough challenges the traditional perception of low energy density in sodium-ion batteries, surpassing mainstream ternary lithium batteries, and is expected to promote the application of sodium-ion batteries in high-end power, aerospace, and other fields.



SIB has a theoretical potential of 472 Wh/kg.

Chinese semiconductor engineer Xu Zhenpeng says he left US to find freedom​

Leading chipmaking engineer said the United States no longer offered the freedom that researchers once expected – a key reason for his decision to continue his work in China.

Xu, who joined (SJTU) as a tenure-track assistant professor in January, left behind a team leadership role at Atomic Semi, a California start-up with high-profile backers that included OpenAI’s venture fund.

Before his departure, Xu led a team that was developing a new kind of chipmaking machine using 3D-printed parts that would be smaller, faster and cheaper than today’s large, costly production equipment.