ProLogium Technology Co., Ltd. announced a memorandum of understanding (MoU) with Dutch aerospace startup Elysian Aircraft BV to explore the integration of ProLogium’s next‑generation all‑inorganic solid‑state battery (ASSB) technology into future electric aircraft platforms ProLogium Press Release. The agreement sets out a joint research roadmap that will focus on adapting ProLogium’s garnet‑type ceramic electrolyte cells—currently delivering up to 380 Wh kg⁻¹ in laboratory prototypes—to meet the stringent weight, safety, and cycle‑life requirements of aviation.

Why it matters: Aviation has long been constrained by the low specific energy of conventional lithium‑ion batteries, which typically sit around 250 Wh kg⁻¹. Solid‑state electrolytes, especially oxide‑based garnets such as LLZO, promise not only higher energy density but also intrinsic fire‑resistance, a critical safety factor for aircraft. If ProLogium can translate its laboratory‑scale 381 Wh kg⁻¹ performance (equivalent to 903 Wh L⁻¹) to a certified aviation‑grade cell, electric propulsion could become viable for regional aircraft in the 2028‑2030 timeframe ProLogium Technical Data.

The MoU outlines three phases: (1) feasibility studies and electrochemical modelling; (2) prototype cell fabrication and bench‑scale testing under aerospace‑grade temperature‑cycling; and (3) flight‑test integration on Elysian’s demonstrator airframe. Both parties will share R&D costs, with ProLogium contributing its proprietary dry‑electrode manufacturing line—an approach that eliminates liquid‑based slurry casting, reduces solvent emissions, and enables thinner electrode stacks, further boosting gravimetric energy Scientific American – Solid‑State Batteries.

Implications: Successful demonstration could accelerate the broader aerospace industry’s shift toward zero‑emission flight, offering a pathway to replace turbofan engines on short‑haul routes. Moreover, the collaboration signals growing confidence among non‑automotive players in solid‑state technology, potentially spurring additional partnerships with airlines, OEMs, and defense contractors. For ProLogium, the aerospace angle diversifies its market beyond automotive and consumer electronics, mitigating the risk of over‑reliance on a single sector and positioning the company as a cross‑industry leader in high‑energy, safe battery solutions.