Are electric vehicles (EVs) still considered as a replacement for internal combustion engines (ICEs) or is the availability of electronic batteries of variations from lithium-ion batteries and lithium iron phosphates important for different areas of electric vehicles? Did it pave the way for higher acceptance rates?
The passenger vehicle sector recorded record annual EV sales of 99,0004 units in 2024, but it is important for buyers to truly understand EV battery space to get the most benefit from their vehicle purchase. is.
Research funded by Tesla has revealed that batteries with “monocrystalline electrodes” can power EVs for millions of miles. This shows that EV batteries can perform better than other vehicle components. Lithium-ion batteries equipped with this new type of electrode can be installed in vehicles and retain 80% of their original capacity even after 6 years of repeated charging and discharging.
EV batteries’ single-crystal electrodes can be cycled eight times longer than regular lithium-ion batteries, equivalent to 5 million miles (8 million kilometers) of driving for electric vehicles, researchers from the Electrochemical Society say. Reported in the journal.
All batteries gradually drain and lose some of their energy storage capacity over time. For example, your cell phone battery will hold less charge after several years than the day you bought it. The same is true for electric car batteries, according to a report from LiveScience.
As the storage capacity decreases, the distance you can travel on a single charge also decreases.
“The main focus of our research was to understand how internal battery damage and fatigue progresses over time and how it can be prevented,” the study said. said Canadian Light Source chemist Toby Bond, co-author of the study, citing the LiveScience report.
In the study, which was funded by electric car maker Tesla, the researchers used a combination of durable single-crystalline electrodes and the more commonly used polycrystalline electrodes.
Bond and his colleagues used high-energy X-rays to look inside the battery without disassembling it. A research team led by Toby Bond found that after two and a half years of continuous cycling, the polycrystalline electrodes were full of tiny cracks. These cracks occur when the lithium ions in the battery force the atoms in the electrodes apart, limiting the amount of energy the battery can store.
The battery with monocrystalline electrodes underwent more than 20,000 charge-discharge cycles and retained approximately 80% of its original capacity at the time.
A typical electric car can travel about 250 miles (400 km) on a single charge, so a battery with monocrystalline electrodes has a lifespan of about 5 million miles.
