Hyundai Motor Group’s head of research and development, Manfred Harrer, told InsideEVs that the automaker is targeting a limited‑run of solid‑state electric vehicles within the next five years, with a tentative market debut around 2029 Source. The company’s “solid‑state battery bet” focuses on a hybrid approach that pairs a lithium‑metal anode with a sulfide‑based solid electrolyte, a configuration that promises higher energy density (up to 500 Wh kg⁻¹) and improved safety compared with conventional liquid‑electrolyte lithium‑ion cells.

Hyundai’s roadmap hinges on two technical milestones. First, the firm must achieve a stable interface between the lithium metal and the sulfide electrolyte, a long‑standing challenge that can cause dendrite growth and rapid capacity fade. Second, the manufacturing process must be scalable; Hyundai is investing in a pilot line that uses a dry‑coating technique to avoid the costly solvent‑based steps typical of lithium‑ion production. Early prototypes are expected to deliver a 20‑30 % increase in range for compact cars, translating to roughly 400 km on a single charge.

Why the focus on low‑volume models? Hyundai plans to use the initial solid‑state vehicles as a technology demonstrator, gathering real‑world data while limiting exposure to the higher costs of early‑stage production. The company also aims to partner with niche OEMs and fleet operators that value safety and energy density over price, such as premium compact cars and urban delivery vans.

If Hyundai can meet its timeline, it would mark the first major automaker to move beyond laboratory‑scale solid‑state cells and into limited commercial production. Success could pressure rivals—especially those still betting on conventional lithium‑ion chemistries—to accelerate their own solid‑state programs, potentially reshaping the EV market’s technology trajectory within the next decade.

ProLogium Technology Co., a Taiwan‑based developer of all‑inorganic solid‑state batteries, announced the appointment of Antony Sheriff, chief executive of the high‑performance electric hypercar maker Rimac Group, to its board of directors Source. The move is framed as a strategic effort to strengthen ProLogium’s commercialization capabilities and to forge deeper cross‑border partnerships as the company prepares for its next growth phase.

Sheriff brings a rare combination of high‑performance automotive experience and deep knowledge of advanced battery integration. Under his leadership, Rimac has pioneered the use of solid‑state cells in its Concept One and Nevera models, demonstrating that ultra‑high‑power applications can tolerate the stringent safety and thermal‑management requirements of solid electrolytes. His presence on ProLogium’s board is expected to accelerate the translation of the company’s laboratory‑grade energy densities—reported at over 400 Wh kg⁻¹ for its latest sulfide‑based cells—into scalable automotive packages.

The appointment also signals ProLogium’s intent to expand its footprint in Europe and North America. Sheriff’s network includes major OEMs, tier‑1 suppliers, and venture investors focused on next‑generation mobility. ProLogium plans to leverage these connections to secure joint‑development agreements and to fast‑track the certification of its Gen‑5 all‑solid‑state platform, which targets a 500 Wh L⁻¹ volumetric energy density and a cycle life exceeding 1,000 full‑depth cycles.

Industry observers note that board‑level talent swaps between solid‑state specialists and performance‑car manufacturers are becoming a hallmark of the sector’s maturation. By aligning technical expertise with market‑oriented leadership, ProLogium hopes to close the “valley of death” that has stalled many solid‑state projects, moving the technology from pilot‑scale demonstration to volume production within the next 24‑30 months.

ProLogium disclosed that it will become a publicly traded company on the Nasdaq through a merger with Translational Development Acquisition Corp. (TDAC), a special‑purpose acquisition company Source. The transaction, valued at roughly $1.5 billion including cash and stock, is designed to fund the scaling of ProLogium’s next‑generation solid‑state battery production lines and to accelerate its entry into high‑volume automotive and aerospace markets.

ProLogium’s solid‑state platform relies on a garnet‑type oxide electrolyte (LLZO) combined with a lithium‑metal anode, delivering a claimed energy density of 450 Wh kg⁻¹ and a safety profile that eliminates the risk of thermal runaway. The company has already demonstrated a 5‑Ah cell that can sustain 1,000 charge‑discharge cycles with less than 5 % capacity loss, a benchmark that positions it ahead of most competing sulfide‑based designs.

The capital raised from the SPAC will be allocated across three primary initiatives: (1) construction of a 200‑MW pilot manufacturing facility in Taiwan, slated to begin production in early 2027; (2) expansion of R&D capabilities focused on high‑voltage cathode chemistries compatible with the LLZO electrolyte; and (3) strategic partnerships with Tier‑1 automotive OEMs, with preliminary MoUs already signed with a European premium‑car maker and a Japanese EV startup.

Analysts view the listing as a vote of confidence in ProLogium’s commercial readiness, especially after its recent mass‑production announcement in August 2026. The Nasdaq debut also provides greater visibility to institutional investors seeking exposure to the solid‑state battery market, which Bloomberg estimates will exceed $200 billion in annual revenue by 2035. If ProLogium can meet its production targets, the company could become a key supplier for next‑generation EVs, drones, and aerospace applications, potentially reshaping the competitive landscape that has long been dominated by liquid‑electrolyte lithium‑ion manufacturers.