HELENA Builds Solid-State Battery with Halide Electrolyte

The HELENA project, which is funded by the EU’s Horizon Europe program, has taken an important first step in the development of solid-state batteries. Coordinated by CIC energiGUNE and with the participation of 15 European companies and institutions, a halide electrolyte cell has been successfully built after 20 months of research.

Facilitating industrial use

The technical advances include the achievement of an electrolyte conductivity of several millisiemens per centimeter, which allows the cells to operate at high currents and low temperatures. In addition, the applicability of the halide electrolyte under dry-chamber conditions was demonstrated, facilitating industrial use. The high thermal stability of the halide electrolyte was also confirmed, improving the reliability and safety of the batteries. The cells were fabricated using a lithium metal anode, the halide electrolyte, and an NMC622 cathode. Capacities of up to four milliampere-hours per square centimeter were achieved.

Safety and recycling issues also researched

In parallel to the development, procedures for the safe handling and testing of the materials and cells were researched. In addition, a concept for the recycling of the batteries is in development.

Source:
https://helenaproject.eu/en/news-events/helena-assembly-solid-state-battery-cell-halide-electrolyte#

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