Summary

ProLogium Technology is a Taiwanese company founded in 2006 that holds the unusual distinction of being both the longest-running and one of the most technically aggressive solid-state battery developers in the industry. The company introduced the world’s first 100% ceramic separator in 2013 and has spent two decades refining oxide-based solid-state technology. At CES 2026, it unveiled the Superfluidized All-Inorganic Solid-State Lithium Ceramic Battery, claiming simultaneous performance advantages over all three mainstream solid-state electrolyte approaches. ProLogium’s European gigafactory in Dunkirk, France breaks ground in 2026, with mass production targeted for 2028.

Key Facts

  • Founded: 2006
  • HQ: Taoyuan, Taiwan (with European operations anchored in Dunkirk, France)
  • Type: Private (pre-IPO)
  • Stage: Late-stage / Pre-IPO; undisclosed funding; Mercedes-Benz strategic investor
  • Technology: Oxide-based → evolving to Superfluidized All-Inorganic (proprietary ceramic + all-silicon anode)
  • Key spec (claimed): Ionic conductivity of 57 mS/cm at room temperature — ~5× that of liquid electrolytes and sulfide solid-state electrolytes
  • Dunkirk facility: Construction begins 2026; mass production 2028; ramp to 4 GWh by 2029; land reserved for up to 48 GWh expansion
  • Partners: Mercedes-Benz (strategic investment), Mitsubishi Chemical Group (materials), FEV Group (Germany, cell-to-module engineering), CEA (France, recyclability)
  • Applications: EV automotive primary; expanding to e-bikes, humanoid robots, AI data center ESS

What It Is / How It Works

ProLogium is one of the few solid-state battery companies that has been building and refining the technology for two full decades, giving it a depth of manufacturing experience that most competitors lack. The company’s original platform used an oxide-based ceramic electrolyte with a 100% ceramic separator — a configuration it was first to commercialize at any scale in 2013.

The latest architecture, announced as “Superfluidized All-Inorganic” at CES 2026, integrates three components: a superfluidized all-inorganic solid-state electrolyte, an all-ceramic separator, and an all-silicon anode. The claimed ionic conductivity of 57 mS/cm at room temperature is a headline figure — conventional liquid electrolytes and sulfide solid-state materials typically achieve 10–12 mS/cm, making the claim roughly 5× higher. If reproducible in production cells, this would largely close the conductivity gap that has long been the main limitation of oxide-based solid-state designs.

The “superfluidized” descriptor refers to a processing innovation that gives the otherwise brittle ceramic electrolyte improved interfacial contact with electrodes — traditionally the weak point of oxide-based cells. The company has not published peer-reviewed data on this specific architecture as of March 2026.

The Dunkirk gigafactory is ProLogium’s first overseas GWh-scale facility. Environmental review and permitting completed by end of 2024; construction begins in 2026; first production of fourth-generation cells targeted for 2028 at 4 GWh capacity, with a reserved footprint expandable to 48 GWh.

Notable Developments

  • 2026-01 (CES): ProLogium marks 20th anniversary; unveils Superfluidized All-Inorganic architecture; claims ionic conductivity of 57 mS/cm and superiority across electrochemical performance, safety, and manufacturability vs. all three mainstream solid-state approaches. (ProLogium)
  • 2026: Dunkirk gigafactory construction begins; mass production targeted for 2028; land reserved for 48 GWh. (ProLogium)
  • 2025 (IAA Mobility): Showcases next-generation solid-state breakthrough; unveils European mass production plan; announces FEV Group and CEA partnerships. (GlobeNewswire)
  • 2013: First company globally to commercialize a 100% ceramic separator in a solid-state cell.
  • 2006: Founded in Taiwan.

Key People

  • Vincent Yang — Founder and CEO; has led ProLogium since founding; primary technical and commercial spokesman
  • Mitsubishi Chemical Group — Materials development partner
  • FEV Group (Germany) — Cell-to-module engineering partner; showcased LLCB module at CES 2026
  • CEA (France) — French national R&D institution; partnering on removable and recyclable solid-state battery modules

Claim Verification

Claim: 57 mS/cm ionic conductivity at room temperature

Status: Unverified (company-reported; no independent peer-reviewed confirmation as of March 2026)

Supporting sources:

Refuting / questioning sources:

  • No specific refutation published; however, 57 mS/cm would substantially exceed the best published sulfide electrolytes (~10–25 mS/cm), making independent verification particularly important before treating the figure as established

Summary: Headline conductivity figure is self-reported at a product announcement with no peer-reviewed or third-party data as of this writing. Worth watching for published data or OEM validation reports.

Claim: First to commercialize 100% ceramic separator (2013)

Status: Broadly accepted in industry context

Supporting sources:

  • Widely referenced across battery industry publications as an established historical fact; no significant dispute found

Summary: The 2013 ceramic separator commercialization is the company’s most credible and least contested claim.

Sources