Crystal Electrodes May Fuel EVs for Millions of Miles
Researchers have developed lithium-ion batteries with single-crystal electrodes that can power electric vehicles (EVs) for millions of miles, far outlasting current battery technology. These batteries retain nearly 80% of their original capacity after six years of constant use, equivalent to driving 5 million miles.
The breakthrough lies in the single-crystal electrode design, which resists mechanical strain and cracking better than traditional polycrystalline electrodes. After 20,000 charging cycles, the single-crystal electrode showed minimal damage, while polycrystalline electrodes developed cracks that reduced energy storage capacity.
Funded by Tesla and involving Dalhousie University researchers, the study highlights the potential for EV batteries that last much longer than the vehicles themselves. Such batteries could also be repurposed for grid-scale energy storage, supporting renewable energy systems. While single-crystal electrodes are not yet widely used in EVs, Tesla has patented similar formulations, paving the way for long-lasting, more sustainable battery technology.