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A Quasi-Solid-State Polymer Lithium–Metal Battery with Minimal Excess Lithium, Ultrathin Separator, and High-Mass Loading NMC811 Cathode

Journal Article (2024)
Author(s)

Gerrit Homann (Swiss Federal Laboratories for Materials Science and Technology (Empa))

Qing Wang (Swiss Federal Laboratories for Materials Science and Technology (Empa))

Sufu Liu (Swiss Federal Laboratories for Materials Science and Technology (Empa))

Antoine Devincenti (Swiss Federal Laboratories for Materials Science and Technology (Empa))

Pranav Karanth (TU Delft - ChemE/Materials for Energy Conversion and Storage)

Mark Weijers (TU Delft - ChemE/Materials for Energy Conversion and Storage)

Fokko Mulder (TU Delft - ChemE/Materials for Energy Conversion and Storage)

Matiss Piesins (Sidrabe Vacuum)

Tom Gouveia (Solvionic)

G.B. More authors

Research Group
ChemE/Materials for Energy Conversion and Storage
DOI related publication
https://doi.org/10.1021/acsaem.4c02099
More Info
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Publication Year
2024
Language
English
Research Group
ChemE/Materials for Energy Conversion and Storage
Issue number
21
Volume number
7
Pages (from-to)
10037-10043
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Abstract

Solid-state batteries with lithium metal anodes are considered the next major technology leap with respect to today’s lithium-ion batteries, as they promise a significant increase in energy density. Expectations for solid-state batteries from the automotive and aviation sectors are high, but their implementation in industrial production remains challenging. Here, we report a solid-state lithium–metal battery enabled by a polymer electrolyte consisting of a poly(DMADAFSI) cationic polymer and LiFSI in Pyr13FSI as plasticizer. The polymer electrolyte is infiltrated and solidified in the pores of a commercial LiNi0.8Mn0.1Co0.1O2 (NMC811) cathode with up to 2.8 mAh cm–2 nominal areal capacity and in the pores of a 25 μm thin commercial polypropylene separator. Cathode and separator are finally laminated into a cell in combination with a commercial 20 μm thin lithium metal anode. Our demonstration of a solid-state polymer battery cycling at full nominal capacity employing exclusively commercially available components available at industrial scale represents a critical step forward toward the commercialization of a competitive all-solid-state battery technology.