Ionblox is a Fremont, California–based battery technology company specializing in lithium‑ion cells that use high‑capacity silicon monoxide anodes to achieve extreme fast charging, higher energy density, and long operational life. Replacing conventional graphite with ultra‑high‑capacity silicon and integrating a patented pre‑lithiation process, nano‑engineered SEI, and advanced cell architecture, Ionblox delivers EV‑grade performance including 5–10 minute fast charging, 30% range increases, and over 1,000 fast‑charge cycles. The company serves automotive and advanced air mobility markets and has been validated by U.S. National Labs after more than a decade of R&D.

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