Multifunctional performance and cycle life of aeronautic structural batteries
Abstract
The demand of storing electrical energy is increasing in upcoming and future more-hybrid-fully-electric aircraft. Li-ion battery technology is expected to reach its theoretical limits in next years, that are likely the lower boundary (in terms of energy and power capability) of what is required to enable (hybrid) electric propulsion of larger aircraft (from commuter size upwards) and UAV, while post-Li-ion batteries, e.g. metal-S and metal-O2, still far from market. Furthermore, conventional, monofunctional battery energy storage (BES) come with substantial cell-to-system weight penalty. Multifunctional energy storage or structural batteries (SB) are thus increasingly investigated as they promise massless energy storage that could enable electrification of aviation. AIT has developed promising SB cell components and a robust SB cell design showing proper thermal and chemical stability achieving energy density beyond other state-of-art. The proposed project will investigate additives for improving the multifunctional performance and cycle life of the novel, safe AIT structural battery electrochemistry. It is an important building block to reducing the still large gap in lifetime between battery electrochemistry and CFRP composite. Novel algorithms for multifunctional state-of-health estimation of structural batteries will be developed enabling better monitoring and prediction of SB safety and lifetime.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Feb 05, 2025
- Source ID
- FA86552417393
Entities
People
- Helmut Kuehnelt
Organizations
- Air Force Office of Scientific Research
- United States Air Force