Taiwanese battery manufacturer ProLogium and Dutch aerospace firm Elysian Aircraft have signed a Memorandum of Understanding to assess the use of next-generation lithium ceramic batteries in large-scale passenger airplanes. 

“Aviation applications place extremely high demands on battery energy density, safety, and weight efficiency, which is why careful and rigorous assessment and validation are essential,” said Vincent Yang, founder and CEO of ProLogium.

The technical parameters of the agreement require the development of battery cells that can function within complete battery packs featuring an energy density between 320 and 420 Wh/kg. This energy density is intended to satisfy the physical requirements of large commercial aircraft designed to fly routes between 750 and 1,000 kilometers (465 miles to 621 miles) on a single charge.  

The agreement establishes two distinct areas for technical assessment. The first area involves standard compatibility testing, which determines if ProLogium’s current battery architectures can integrate directly into existing aviation electrical systems without structural modifications. 

The second area focuses on custom development, where engineers will design new battery cell variations specifically to meet the unique safety standards, structural dimensions, and weight limitations required for commercial aerospace applications.

Increase safety parameters

Commercial electric flight has previously faced limitations because standard lithium-ion batteries do not offer enough energy relative to their total weight. Solid-state and lithium ceramic designs reduce total weight and increase safety parameters by replacing liquid electrolytes with stable solid materials. 

“However, aviation applications impose highly stringent requirements on battery system safety standards, reliability, weight management, and certification, and such technologies must still undergo careful validation and long-term development,” noted the company in a press release.

The companies will also evaluate the logistics of establishing manufacturing facilities and supply chains within Europe. Sourcing materials and assembling battery packs near Elysian’s operational facilities is intended to shorten international shipping distances.

“By assessing local supply and manufacturing capabilities in Europe, there may be opportunities to shorten cross-regional transportation distances, strengthen supply chain resilience, and further reduce the overall carbon footprint from a Life Cycle Assessment (LCA) perspective,” explained the press release.

The company originally developed a battery architecture utilizing a 100% ceramic separator in 2013. In 2025, the manufacturer introduced a superfluidized all-inorganic lithium ceramic battery design intended to be manufactured on automated, high-volume assembly lines to control production costs.  

System integration for strategic objectives

Executives from both organizations stated that cell capacity alone cannot solve the challenges of electric aviation, as flight requires specific system integration, safety profiles, and weight reduction. The assessment process will evaluate how these cell architectures function when scaled into full aircraft modules. 

The formal discussions under this memorandum aim to establish whether next-generation battery physics can realistically meet the operational demands of large-scale, zero-emission commercial passenger flights.  

“Battery technology is a key enabler for electric aviation, but aviation requires far beyond cell performance alone,” concluded Rob Wolleswinkel, Co-CEO and CTO of Elysian Aircraft. 

“Through this MoU with ProLogium, we look forward to exploring how next generation battery technology could support safe, scalable, and zero-emission aviation.”

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