A
Quasi-Solid-State Polymer Lithium–Metal Battery
with Minimal Excess Lithium, Ultrathin Separator, and High-Mass Loading
NMC811 Cathode
Posted on 2024-10-31 - 08:13
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.
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Homann, Gerrit; Wang, Qing; Liu, Sufu; Devincenti, Antoine; Karanth, Pranav; Weijers, Mark; et al. (2024). A
Quasi-Solid-State Polymer Lithium–Metal Battery
with Minimal Excess Lithium, Ultrathin Separator, and High-Mass Loading
NMC811 Cathode. ACS Publications. Collection. https://doi.org/10.1021/acsaem.4c02099