Scientists at the Department of Energy’s Oak Ridge National Laboratory have developed a scalable, low-cost method to improve the joining of materials in solid-state batteries, resolving one of the big challenges in the commercial development of safe, long-lived energy storage systems.
UPTON, NY—A team of researchers led by chemists at the U.S. Department of Energy’s (DOE) Brookhaven National Laboratory has studied an elusive property in cathode materials, called a valence gradient, to understand its effect on battery performance. The findings, published in Nature Communications, demonstrated that the valence gradient can serve as a new approach for stabilizing the structure of high-nickel-content cathodes against degradation and safety issues.
Scientists have identified the primary cause of failure in a state-of-the-art lithium-metal battery, of interest for long-range electric vehicles: electrolyte depletion.
Scientists have improved a promising battery technology, creating a single-crystal, nickel-rich cathode that is hardier and more efficient than before. Increasing nickel content in the cathode of an electric vehicle’s battery is attractive because of nickel’s relatively low cost, wide availability and low toxicity compared to other materials.
Using electron microscopes, Hwang—a materials scientist at Brookhaven Lab’s Center for Functional Nanomaterials (CFN)—characterizes the structure and chemistry of operating battery electrode materials.
Since 2011, Nikhilendra (Nik) Singh has been a senior scientist in the Materials Research Department at the Toyota Research Institute of North America. His quest to find alternatives to lithium-ion batteries has brought him to Brookhaven Lab’s Center for Functional Nanomaterials (CFN).