Enevate Founder and Chief Technology Officer shares new silicon-dominant Li-ion battery innovations
Unlike graphite-dominant anodes that only include a small percentage of silicon-containing additive, Enevate is manufacturing silicon-dominant anodes as a proprietary active material film with over 70% silicon content.
Dr. Benjamin Park, Enevate Corporation’s Founder and Chief Technology Officer, discussed technical details behind the company’s HD-Energy Technology at this week’s 33rd International Battery Seminar in Ft. Lauderdale, Florida. Dr. Park disclosed the technology and benefits of Enevate’s new silicon-dominant Li-ion battery innovations overcoming the obstacles of other and more traditional silicon approaches. Unlike graphite-dominant anodes that only include a small percentage of silicon-containing additive, Enevate is manufacturing silicon-dominant anodes as a proprietary active material film with over 70 percent silicon content.
Enevate unveils new HDEnergy Technology details at the 33rd International Battery Seminar #FloridaBattery16
“It’s exciting to see what started off as an anode technology mainly targeting high energy density show additional benefits such as ultrafast charging. The unique properties of our developed silicon-dominant conductive active material film has led to additional benefits for mobile users,” said Dr. Park. “For example, we have demonstrated ultrafast charging with 90% cell charge in 15 minutes and 50% in as little as five minutes, and benchmarks are showing between 35 to 50% longer smartphone runtime.”
Enevate’s innovations, supported by 25 issued and pending patents, allow for a silicon composite anode with a gravimetric energy density of about 2800 mAh/g and high initial Coulombic efficiencies of 93% for the anode and 90% for full cells, while controlling the well-known issues associated with volumetric expansion and contraction. The composite is comprised of carbon as a conductive matrix, silicon as the main active material, and silicon-carbide as a nanometer-scale layer protecting the silicon surface. In addition, Enevate technology is compatible with current high-volume manufacturing processes, leading to lower costs and providing the ability for use in existing form-factors.
Dr. John Goodenough, a key inventor of the modern Li-ion battery, said, “Enevate is using a different technical approach for silicon anodes that is truly unique and innovative to deliver both ultrafast charging and high energy density. I‘m impressed that their technology and process is practical, highly manufacturable, and has the potential to be sufficiently inexpensive for high-volume mobile devices.”
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