Massive cars plus massive range requirements mean giant batteries. Unsurprisingly, this comes with a trade-off: Charging up those big batteries takes extra time.
, is to add more heat to the equation. A thin strip of nickel foil inside the battery quickly cooks the battery up 60 degrees Celsius—a temperature at which the lithium ions move more quickly to find their seats in the anode. This allows a higher current to flow into the battery without causing plating, shaving off valuable minutes from charging.
Elsewhere in the world, shorter-range vehicles are already popular, even without fast charging. He points to the example of China, where miniature EVs powered by smaller batteries are regularly best sellers, and automakers like Tesla have made strides investing in iron phosphate batteries that pack somewhat less energy but require fewer scarce materials like cobalt and nickel than the most range-optimized designs.
Jessika Trancik, a professor studying energy systems at MIT, says range will likely remain of interest to EV buyers. Whatever kinds of fast-charging technologies are developed, it will take time to build them out. The important thing is to be strategic about where they’re installed. “One of the reasons you don’t want to install currently available fast chargers everywhere is the cost,” she says.
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