Range anxiety, the fear of an electric car running out of charge before reaching its destination, remains one of the biggest psychological barriers to electric vehicle adoption globally. current electric car It can travel about 700 kilometers on a single charge, a figure that engineers and battery scientists have been trying to beat for years. Now, a team of researchers at Pohang University of Science and Technology in South Korea has identified what they call a breakthrough: a gel-based solution that could allow electric vehicles to travel nearly 1,000 kilometers on a single charge, using materials that are cheaper and more practical than anything the industry has tried before.
Why Silicon Has Been the Biggest Hope and Biggest Problem for Electric Car Batteries
Silicon has long been an attractive answer to electric vehicle battery problems. Its storage capacity far exceeds the graphite anodes used in most lithium-ion batteries today, making it an obvious candidate for next-generation battery designs. The question is what happens when you actually use it. During charging, the silicon expands to more than three times its original size, then shrinks during discharge. Repeatedly, this mechanical stress can crack the material, causing the battery to rapidly degrade and become unstable over time.The industry’s response has been to use nanometer-sized silicon particles, which are small enough that swelling causes less structural damage. To a certain extent, it works. But nanosilicon production technology is complex and large-scale production is expensive, making it difficult to move from the laboratory to large-scale production without huge cost implications.
What a gel polymer electrolyte Solve the problem of silicon expansion
The POSTECH team, led by Professor Soojin Park and PhD students Minjun Je and Dr. Hye Bin Son, took a different approach. Rather than shrink the silicon to the nanoscale, they kept it in micron-sized particles, a hundred times larger than those used in conventional nanosilicon anodes, and paired them with a gel polymer electrolyte instead of the liquid electrolyte found in standard batteries.The gel acts as a stabilizing medium. Because it is neither completely liquid nor completely solid, it can accommodate the expansion and contraction of larger silicon particles during charge cycles without the structural breaks that make standard microsilicon unstable. The findings, published in the journal Advanced Science, show that the battery remains stable even with microscopic silicon particles as small as five microns in size, which was previously thought to be too large to work reliably.
The numbers behind the breakthrough: 40% increase in energy density
Performance data for new systems is very important. The silicone gel electrolyte combination provides ionic conductivity comparable to traditional batteries using liquid electrolytes, which means it doesn’t sacrifice how quickly charge moves through the battery. At the same time, its energy density is increased by approximately 40% compared to current battery designs. This improvement is applied to existing electric vehicle battery packs, making range figures of 1,000 kilometers within reach.“We used a microsilicon anode, but we had a stable cell,” Professor Parker said. “This research brings us closer to a truly high-energy-density lithium-ion battery system.”Crucially, the manufacturing process behind the new system requires no exotic or expensive equipment. The team makes clear that the process is simple enough to be immediately applicable, an important distinction in battery research where breakthroughs that don’t survive the transition to industrial manufacturing rarely reach consumers.
Why this battery discovery matters beyond the lab
POSTECH’s breakthrough comes as the global race for electric vehicle batteries rapidly accelerates. China’s CATL recently launched its Kirin compression battery at the 2026 Beijing Auto Show, claiming that it uses semi-solid chemistry technology and has a range of up to 1,500 kilometers. Meanwhile, Geely, Toyota and a handful of Western startups are pursuing solid-state battery technology with similar long-term goals, although most don’t expect to achieve mass production before the late 2020s or early 2030s.The POSTECH gel method is unique in its relative simplicity. While solid-state batteries hold great promise, they face serious manufacturing and durability challenges that have kept them from being used in production vehicles for years. The gel polymer electrolyte system works with existing lithium-ion manufacturing infrastructure to achieve a 40% energy density gain without consuming nanosilica, representing a more near-term path to meaningful range improvements.
What’s next for silicone electric car batteries
The research was supported by the Korea National Research Foundation’s Independent Researchers Program, and the team’s next steps include improving the system to improve durability over long charge cycles, the real-world test that all battery chemistries must ultimately pass.For electric car drivers, the implications are obvious. A vehicle that can travel 1,000 kilometers on a single charge is no longer a car that requires careful planning of routes, deliberate stops to charge, or constant attention to the battery indicator light. It’s just a car that runs on electricity. Getting there has always been a matter of chemistry. A team in South Korea may have found a possible answer in a jar of gel.
