A new EV battery deploys 3-D nanostructures that resemble plastic badminton birdies but deliver on cost, performance, and safety.
File this one under H for How Low Can An EV Battery Go? A spinoff from CalTech called Sienza Energy has come up with a new silicon EV battery that does away with cobalt, a baggage-laden mineral once thought essential for high-performing mobile energy storage. The secret is a nanoscale structure that resembles a plastic badminton birdie but delivers the triple threat of cost, performance, and safety.
Sienza CTO Dr. Azin Fahimi further elaborated that the nanoscale structures are designed to dissipate heat more effectively. The company’s Chairman of the Board, Dr. Mory Gharib, also elaborated further. “By increasing the surface area of the electrodes, 3D nanostructures enhance the efficiency of electrochemical reactions, thus improving battery performance and longevity without compromising safety,” he said.
“Our innovative manufacturing process represents a significant advancement in the field, enabling the synthesis of novel chemistries at lower temperatures,” Sienza explains. “The utilization of this technique in the production of cathode materials exhibits a remarkable potential for energy storage, with the ability to store 3 to 5 times more energy.”
“Sienza’s 3D pure silicon anode has demonstrated an average gravimetric capacity of 2,941 mAh/g,” Professor Gharib said. “This means that for every gram of silicon, our batteries can store 2,941 milliampere-hours of electricity, significantly higher than the industry standard for graphite, with a gravimetric capacity of 372 mAh/g.”
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