Year: 2025
Type: article
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.
Source: ACS Energy Letters
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $4,500
Funders: National Science Foundation, Norges Teknisk-Naturvitenskapelige Universitet, Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung, Eidgenössische Technische Hochschule Zürich, Eidgenössische Materialprüfungs- und Forschungsanstalt, Norges Forskningsråd, Austrian Institute of Technology
Awards: G298171496, Algorithme projectif et décomposition: Application à des modéles de programmation stochastique utilisés en planification., Enhanced combination of synchrotron diffraction and spectroscopy for studying materials and processes focussed on sustainable technologies and environmental issues, G7604543441
OpenAlex ID: W4415737550