This image, created by a scanning electron microscope, shows the dual-gradient cathode particles fabricated by the Argonne team. (Image by Argonne Na

Argonne Builds on Past Success with Cathode Design for Lithium-Ion Batteries | BNL Newsroom

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2024-11-06 14:30:06

This image, created by a scanning electron microscope, shows the dual-gradient cathode particles fabricated by the Argonne team. (Image by Argonne National Laboratory.)

Editor’s note: The following article was originally issued by the U.S. Department of Energy’s (DOE) Argonne National Laboratory. Researchers used advanced X-ray techniques at DOE Office of Science user facilities, including the National Synchrotron Light Source-II (NSLS-II) at DOE’s Brookhaven National Laboratory. There, they performed full-field transmission X-ray microscopy at the Full Field X-ray Imaging (FXI) beamline, X-ray absorption near-edge structure at the Quick x-ray Absorption and Scattering (QAS) beamline, and 3D nano-fluorescence mapping at the Hard X-ray Nanoprobe (HXN) beamline. This in-depth analysis found that the more disordered surface maintains a lower nickel oxidation state compared to the more ordered bulk, which becomes more highly oxidized during charging. This lower surface oxidation is crucial in preventing unwanted reactions between the electrode material and the electrolyte, which typically leads to degradation. This breakthrough design paves a path forward for next-generation batteries that can deliver both high performance and long-term durability. For more information on Brookhaven’s role in this research, contact Denise Yazak (dyazak@bnl.gov, 631-344-6371).

The U.S. Department of Energy’s (DOE) Argonne National Laboratory has developed a new design that dramatically improves the performance and reduces the costs of lithium-ion batteries. 

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