New research shows that batteries with single-crystal electrodes could significantly extend the lifespan of electric vehicles. A lithium-ion battery with this innovative electrode design has demonstrated exceptional durability, retaining 80% of its capacity after six years of continuous charging and discharging.
Batteries with single-crystal electrodes could power electric vehicles (EVs) for millions of miles — meaning their batteries would outlast other parts of the cars, new research shows. A lithium-ion battery with this new type of electrode has been charging and discharging constantly for six years, retaining nearly 80% of its original capacity.
That battery cycled eight times longer than a regular lithium-ion battery — equivalent to an electric car driving 5 million miles (8 million kilometers), researchers reported Nov. 15 in the Journal of The Electrochemical Society. All batteries slowly wear out and lose some of their energy-storage capacity over time. For instance, your phone battery holds less of a charge after a few years than it did the day you bought it. The same is true of electric car batteries: When their storage capacity drops, so does the distance the car can travel on a single charge. The main focus of our research was to understand how damage and fatigue inside a battery progresses over time, and how we can prevent it,' study co-author Toby Bond, a chemist at Canadian Light Source, said in a statement. In the study, which was funded by the electric vehicle maker Tesla and included researchers from Dalhousie University in Nova Scotia, researchers compared the long-lasting single-crystal electrode with a more commonly used polycrystalline electrode. The two electrodes are made from similar materials, but in the polycrystalline electrode, those materials take the form of many tiny particles formed from even smaller crystals packed together. In the single-crystal electrode, as the name suggests, each particle is made from just one crystal, which makes them more resistant to mechanical strain. Bond and his colleagues used high-energy X-rays to look inside the battery without taking it apart. The team found that after
Electric Vehicles Batteries Lithium-Ion Single-Crystal Electrodes Durability
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