Advanced Electrical Measurement Assembly for Secondary Alkali Solid-Electrolyte Batteries

TO-106 • PT 1.2870 • As of 10/2023
Institute of Energy and Climate Research
Ionics in Energy Storage (IEK-12)

Technology

The present invention introduces an electrical measuring assembly for secondary alkali solid-electrolyte batteries. This innovative technology enables fast and reproducible determination of the electrical properties of these batteries. The assembly consists of two electrically non-conductive cell body halves, each with multiple openings for accommodating a solid-electrolyte battery cell. The use of this measuring assembly allows for reliable measurements without the need for additional components or complex setups. It provides a symmetrical and controlled force on the battery cells, minimizing the risk of mechanical damage and ensuring accurate results. The assembly's flexibility and simplicity make it an attractive solution for various applications in the field of battery research and development.

Problem addressed

The increasing demands for sustainability and mobility have significantly changed the landscape of decentralized energy storage. While the use of alkaline-based energy storage systems, such as rechargeable lithium batteries, has expanded the possibilities, the previous limitations in size, weight, and limited electrical capacity have hindered technical utilization. Existing measurement setups for electrolyte research lack a reference electrode, making it difficult to identify various degradation processes within a cell. Additionally, complex assembly processes and potential contact loss due to thermal deformation further complicate reliable and reproducible measurements.

Solution

The present invention overcomes the limitations of the prior art by introducing an electrical measuring assembly for secondary alkali solid-electrolyte batteries.

This multielectrode setup allows for highly reproducible determination of the electrical properties of solid-electrolyte battery cells. The assembly is simple, consisting of few parts, and can be easily disassembled and cleaned even under unfavourable conditions. The use of large-area metal current collectors enables rapid and uniform temperature control within the cell. The assembly applies a consistent and controlled force to the battery cells, minimizing the risk of mechanical damage and ensuring reliable contact with uneven cell surfaces.

Benefits and Potential Use

The innovative measuring assembly offers a solution for fast and reproducible determination of electrical cell properties. It can be used for various solid-electrolyte battery cells, enabling efficient optimization of battery performance. The symmetrical design of the assembly reduces measurement errors caused by temperature gradients or mechanical stress. The flexible contact elements and material selection allow for customization based on specific measurement requirements. Overall, this technology has the potential to advance battery research and development, supporting sustainable energy storage and electric mobility concepts.

Development Status and Next Steps

Forschungszentrum Jülich has extensive expertise in this field and holds several patents. The technology described above has already been initially verified through prototypes and is continuously being developed further. The Institute of Energy and Climate Research (IEK-12) – Ionics in Energy Storage – already cooperates with numerous national and international companies and scientific partners. Forschungszentrum Jülich focuses on energy and cost-efficient devices, suitable for various emerging technologies. We are continuously seeking for cooperation partners and/or licensees in this and adjacent areas of research and applications.

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