CEO Trevor Milton seems dead set on challenging Elon Musk’s dominance for audacious transportation ideas with a claim that his own electric vehicle startup has a breakthrough cell that's lighter, cheaper and more powerful than lithium-ion.
“There is a huge dimension of things that need to work well,” says Mike Ramsey, a Detroit-based senior research director for Gartner who tracks auto technology developments.
Lithium-ion batteries are used in modern EVs because of high energy density. Within a rechargeable lithium-ion battery pack, individual cells have three main elements: the cathode , the anode and a chemical electrolyte between them. Typically, cathodes are made from lithium-cobalt oxide compounds, while anodes use graphite. Electrolytes vary depending on battery type, but tend to be flammable. When the pack charges, cathodes release lithium ions that move through the electrolyte to the anode.
The cell is also the first that “removes binder material and current collectors, enabling more energy storage within the cell,” according to the company. Sri Narayan, a professor of chemistry at the University of Southern California, agrees that using sulfur in the cathode could be an option, “but lithium-sulfur chemistry is not mature. It’s evolving, so there are numerous issues that aren’t solved. That’s on the positive electrode side.
“With carbon nanotubes to interconnect the particles, binder materials could be avoided. Conducting polymer materials do not need a binder and can store charge. Therefore, these could be potential candidates for the anode or cathode.”
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