New Sodium Battery Design Charges In Four Minutes As Experts Say Battery Technology Is Moving Beyond Lithium
Researchers in China have announced a new sodium metal battery design that can fully charge in just four minutes and retain its capacity for years of use, a development being described as a significant step in the ongoing search for cheaper and safer alternatives to today’s lithium ion batteries.
According to the report, sodium metal batteries belong to a class of ultra fast charging and stable batteries that scientists believe could eventually offer a cheaper alternative to lithium ion batteries, which rely on geographically concentrated metals and are prone to catching fire. The report explained that sodium metal batteries differ from the more commonly known sodium ion batteries in that they use a metallic sodium anode instead of a graphite or hard carbon anode.
The development comes at a time when the global battery market is witnessing unprecedented growth, driven largely by the boom in electric vehicles. According to a related feature by Nicola Jones, published on July 8, 2026, demand for batteries has grown more than fortyfold since 2010, with electric vehicle sales hitting 20 million in 2025, accounting for about a quarter of all cars sold globally. The report also noted that storage capacity for solar farms has grown twentyfold in just five years, further fueling the demand for battery innovation.
Speaking on the pace of development in the sector, a former battery chemist and analyst for the International Energy Agency, Teo Lombardo, said, “In the past five years, innovation went very, very fast. In 2024, over 40 percent of energy related patents were on batteries. That’s never happened before. That tells you how quickly the market is evolving, and how much interest there is.”
Lombardo explained that while lithium ion batteries remain the gold standard for lightweight, high powered energy storage in laptops, smartphones and electric cars, two new technologies are now challenging its dominance from opposite ends of the cost spectrum. He said cheap but bulky sodium batteries are being positioned to power budget electric vehicles and support electricity grids, while expensive but more powerful solid state batteries are being developed to offer longer ranges for luxury electric vehicles.
“The battery market is becoming so large that it’s not a matter of one technology replacing another,” Lombardo said. “It’s about specialising to serve different parts of the market.”
On the science behind battery development, a materials scientist and head of the SLAC Stanford Battery Center in Menlo Park, California, Jagjit Nanda, likened the process of creating a good battery to composing a symphony, noting that every component must work together seamlessly. He explained that although making a basic battery is simple, producing one that is powerful, affordable, durable, safe and easy to recycle requires decades of careful research.
The report traced the origin of lithium ion batteries to the oil crisis of the 1970s, which spurred investment in energy alternatives, leading to the first commercial lithium ion battery in 1991. Since then, researchers have continued to refine the technology, tripling its energy density and cutting its price by about tenfold.
On sodium as an alternative, the report explained that although sodium shares similar chemical properties with lithium and is far more abundant, its atoms are more than twice the volume and three times the weight of lithium, making sodium batteries about 30 percent less energy dense than their lithium counterparts. However, Nanda expressed confidence that sodium battery technology would continue to improve, noting that it is “more or less following the same trajectory as lithium ion.”
The report also disclosed that China based battery company, CATL, signed a deal in May to supply 60 gigawatt hours of sodium batteries for energy storage in Ningde, Fujian province, an amount said to be enough to power thousands of homes for a year.
On solid state batteries, the report noted that the technology could potentially double energy density and push electric vehicle range beyond 600 miles, but manufacturing costs remain high due to the difficulty of assembling solid battery components. Lombardo noted that commercialisation of solid state batteries by 2030 is “probably realistic,” though the technology may first find use in high value applications such as robotics before becoming mainstream in vehicles.
Beyond sodium and solid state options, the report highlighted that researchers are also exploring other battery chemistries involving magnesium, calcium, aluminium and zinc, along with more experimental concepts such as lithium sulfur and lithium air batteries, which remain years away from commercial viability.
On sustainability, the report noted that experts are increasingly focused on making batteries more environmentally friendly, including reducing toxic manufacturing solvents and scaling up recycling systems, especially as a wave of retired electric vehicle batteries is expected by around 2035 given that mass electric vehicle adoption began around 2020.
Despite the growing interest in alternative battery technologies, Lombardo maintained that lithium ion batteries would remain dominant in the near future. “By 2035, lithium ion will definitely still be the majority, sodium ion will have very likely a share, solid state might be there,” he said, adding that anything beyond that timeline remains difficult to predict.