Investigating Connectivity, Cathode Electrolyte Interphase Formation & Composition in Transition Metal Fluoride Solid State Batteries via Pt

DOI

The development of high-energy and low-cost cathode materials is one of the most pressing issues in solid-state and Li–ion battery research. Transition metal fluoride conversion-type cathodes, such as CuF2, are an attractive alternative to state-of-the-art intercalation cathodes in this context, offering a three- to five-fold higher theoretical capacity at lower cost and in the absence of scarce metals. Lithium diffusivity and electrolyte instability concerns, as well as a limited knowledge of the growing cathode solid electrolyte interphase (CEI), have so far prevented their more practical pursuit. Here, using ex-situ Ptychographic and XRF Nanotomography, we would like to investigate a nanostructured CuF2 composite cathode, utilized in a solid-state battery (SSB). Tomograms provide a 3D model of the cathode layer spatial arrangement, component connectivity, their evolution, alongside a first insight into the local CEI composition and how it determines battery performance.

Identifier
DOI https://doi.org/10.15151/ESRF-ES-2041038386
Metadata Access https://icatplus.esrf.fr/oaipmh/request?verb=GetRecord&metadataPrefix=oai_datacite&identifier=oai:icatplus.esrf.fr:inv/2041038386
Provenance
Creator Oliver AYRE; William CHEVREMONT ORCID logo; DMITRY KARPOV ORCID logo; Tristan MANCHESTER ORCID logo; Johannes IHLI; Zhao JIANG; Fabio NUDELMAN ORCID logo
Publisher ESRF (European Synchrotron Radiation Facility)
Publication Year 2028
Rights CC-BY-4.0; https://creativecommons.org/licenses/by/4.0
OpenAccess true
Representation
Resource Type Data from large facility measurement; Collection
Discipline Particles, Nuclei and Fields