Chinese Researchers Unveil 4-Minute Sodium Metal Battery, Sustaining 90% Capacity Over 2,000 Cycles
Updated
Updated · Livescience.com · Jul 10
Chinese Researchers Unveil 4-Minute Sodium Metal Battery, Sustaining 90% Capacity Over 2,000 Cycles
2 articles · Updated · Livescience.com · Jul 10
Summary
A new sodium metal battery design from China reached full charge in 4 minutes and ran for more than 6,000 hours without dendrite-driven short circuits, according to a study in Nano-Micro Letters.
The advance hinges on a quasi-solid gel electrolyte called Sn-FB QSE, which reinforces the battery and stabilizes the sodium-metal anode, preventing the spike-like dendrites that have kept sodium metal batteries largely theoretical.
At the fastest charge rate, the cell retained 80.1 mAh g−1; at a slower 20-minute full charge, it kept 90% of capacity after 2,000 cycles, with researchers saying that setting also improves safety and cost.
The result targets a key EV bottleneck: charging speed. Sodium metal batteries could offer a cheaper, safer alternative to lithium-ion cells, though lower temperature stability, replication and large-scale manufacturing still need to be proved.
With sodium-ion batteries already in mass production, can this new 4-minute charging technology leapfrog them to power future EVs?
This new battery charges in minutes, but will its potentially lower range limit it to only city cars and public transport?
Ultra-Fast Charging Sodium Metal Batteries: The 2026 Breakthrough Reshaping Global Energy Storage
Overview
In July 2026, new sodium metal batteries (SMBs) were developed, marking a breakthrough in energy storage. These SMBs use a metallic sodium anode, which sets them apart from traditional sodium-ion batteries and enables ultra-fast charging in just minutes. They also offer impressive longevity, running for up to 6,000 hours. This combination of speed and endurance makes SMBs a strong alternative to lithium-ion batteries. The remarkable performance of these batteries signals a promising future for more affordable, durable, and efficient energy solutions across various applications.