Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 57, Issue 8, Pages 2096-2100Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201710841
Keywords
composite electrolytes; hydrogels; lithium-ion conductors; percolation; solid electrolytes
Categories
Funding
- National Science Foundation [NSF-CMMI-1537894]
- Welch Foundation [F-1861, F-1066]
- Camille Dreyfus Teacher-Scholar Award
- Sloan Research Fellowship
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Solid-state electrolytes have emerged as a promising alternative to existing liquid electrolytes for next generation Li-ion batteries for better safety and stability. Of various types of solid electrolytes, composite polymer electrolytes exhibit acceptable Li-ion conductivity due to the interaction between nanofillers and polymer. Nevertheless, the agglomeration of nanofillers at high concentration has been a major obstacle for improving Li-ion conductivity. In this study, we designed a three-dimensional (3D) nanostructured hydrogel-derived Li0.35La0.55TiO3 (LLTO) framework, which was used as a 3D nanofiller for high-performance composite polymer Li-ion electrolyte. The systematic percolation study revealed that the pre-percolating structure of LLTO framework improved Li-ion conductivity to 8.8x10(-5) S cm(-1) at room temperature.
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