Composite solid polymer electrolytes and organic cathode materials suitable for solid-state lithium batteries
AssigneePurdue Research Foundation
InventorsVilas G. Pol, Zheng Li, Sensen Zhang
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Abstract
Composite solid polymer electrolytes (SPE), organic cathode electrodes, and solid-state lithium batteries (SLBs) that incorporate the SPE and/or the organic cathode electrodes. The composite solid polymer electrolytes include a hybrid polymer matrix, an LiTFSI salt dispersed in the matrix polymer matrix, and an LLZTO ceramic filler dispersed in the matrix polymer matrix. The organic cathode electrodes contain perylene-3,4,9,10-tetracarboxylic dianhydride (PTCDA).
Claims19
A composite solid polymer electrolyte suitable for use in a solid-state lithium battery, the composite solid polymer electrolyte comprising:
- a polymer matrix consisting of poly(vinylidene fluoride) (PVDF);
- a lithium bis(trifluoromethane)sulfonimide (LiTFSI) salt dispersed in the polymer matrix;
- and
- a lithium-lanthanum-zirconium-tantalum-oxygen (LLZTO) ceramic filler dispersed in the polymer matrix, wherein the PVDF and LiTFSI are present in a molar ratio of 4:1 and the LLZTO ceramic filler is 2.5% to 5% by weight of the total amount of PVDF and LiTFSI.
An organic cathode suitable for use in a solid-state lithium battery, the organic cathode comprising perylene-3,4,9,10-tetracarboxylic dianhydride (PTCDA), conductive carbon black, and a composite solid polymer electrolyte,
- wherein the composite solid polymer electrolyte comprises a hybrid polymer matrix consisting of a 1:1 by weight mixture of poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) and poly(ethylene carbonate) (PEC), a lithium bis(trifluoromethane) sulfonimide (LiTFSI) salt dispersed in the hybrid polymer matrix, and a ceramic filler dispersed in the hybrid polymer matrix, wherein the ceramic filler is Li6.4La3Zr1.4Ta0.6O12 and is 2.5% to 5% by weight of the total amount of PVDF-HFP and LiTFSI.
Dependencies are inferred from the claim text.