Researchers at the U.S. Department of Energy’s (DOE) Argonne National Laboratory have a long history with lithium-ion batteries
Boundary-free structure for electrode particles eliminates reactions that diminish battery life.
“We now have guidelines that battery manufacturers can use to prepare cathode material that is boundary-free and works at high voltage.” — Khalil Amine, Argonne Distinguished Fellow A different approach to avoid this cracking involves single-crystal particles. Electron microscopy of these particles indicated they have no boundaries.
“When we look at the surface morphology of these particles, they look like single crystals,” said physicist Wenjun Liu. “But when we use a technique called synchrotron X-ray diffraction microscopy and other techniques at the APS, we find boundaries hiding inside.” “Our calculations showed how boundaries lead to oxygen release at high voltage and, therefore, performance decline,” Chan said.
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