A Highly Conductive Halospinel Cathode for All-Solid-State Batteries
Source abstract
Abstract
High Resolution Image Download MS PowerPoint Slide High-power lithium-ion batteries (LIBs) rely on highly ionically and electronically conductive cathode active materials (CAMs). While oxospinels meet these criteria and are therefore widely employed in state-of-the-art LIBs, we demonstrate that halospinels offer greatly enhanced transport properties and enable the incorporation of earth-abundant transition metals, such as iron. Using spinel-type Li 2– x FeCl 4 (0 < x ≤ 1, LFC) as a model CAM in an all-solid-state battery (ASSBs), we show that its intrinsically high ionic-electronic conductivity enables the fabrication of cathodes composed of micron-sized CAM particles with high areal capacity (>2 mA h cm –2 ) at practical current densities (0.5 mA cm –2 ) over 200 cycles. Our findings position LFC as a promising CAM, paving the way for cost-effective, high-performance ASSBs.
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Research context
OpenAlex topics: Advancements in Battery Materials · Advanced Battery Materials and Technologies · Ionic liquids properties and applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Laboratory of Inorganic Chemistry, Department of Chemistry and Applied Biosciences
ETH Zürich
Laboratory for Thin Films and Photovoltaics
Empa - Swiss Federal Laboratories for Materials Science and Technology
Department of Material Science and Engineering
NTNU Norwegian University of Science and Technology
Swiss−Norwegian Beam Lines at the European Synchrotron Radiation Facility
Christian Doppler Laboratory for Solid-State Batteries
Austrian Institute of Technology GmbH, Center for Transport Technologies, Battery Technologies
Funding
Schweizerischer Nationalfonds zur F?rderung der Wissenschaftlichen Forschung · Norges Forskningsr?d
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