US scientists have uncovered a critical hydrogenation mechanism that speeds up the degradation of lithium-ion batteries in electric vehicles.
The research used the Advanced Photon Source , a high-energy X-ray facility, to observe molecular-level changes in the battery components.Scientists from the Argonne National Laboratory, U.S. Department of Energy, have uncovered a critical hydrogenation mechanism that accelerates the degradation of lithium-ion batteries in electric vehicle s .
“Self-discharge is a phenomenon experienced by all rechargeable electrochemical devices,” Argonne senior chemist Zonghai Chen said. The collaborative research involving Argonne, many U.S. academic institutions, and other recognized national labs validated the mechanism through experiments and computational studies.
Michael F. Toney, a study co-author and professor at the University of Colorado Boulder, said that the “right chemistry for these cathode materials is necessary to improve the battery’s chemical stability and reduce the rate of self-discharge.”According to the prevailing wisdom, the two primary explanations for cathode deterioration are oxygen release from cathodes and lithium loss.
The APS is expected to play a crucial role in accelerating these advances by allowing scientists to perform even more precise atomic-level investigations of
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