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Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications
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Lithium Diffusion Pathway in Li(1.3)Al(0.3)Ti(1.7)(PO4)3 (LATP) Superionic Conductor
Mykhailo Monchak1,2, Thomas Hupfer1, Anatoliy Senyshyn2
1Karlsruher Institut für Technologie (KIT), Institut für Angewandte Materialien (IAM) , 76131 Karlsruhe, Germany.
Inorganic Chemistry
|March 2, 2016
Summary
Al-substituted LiTi2(PO4)3 (LATP) powders were synthesized and analyzed. Researchers mapped the 3D lithium diffusion pathways and energy landscape in this NASICON-type superionic conductor for the first time.
Area of Science:
- Materials Science
- Solid-State Chemistry
- Electrochemistry
Background:
- Lithium-ion diffusion is crucial for battery performance.
- NASICON-type materials are promising solid electrolytes.
- Understanding diffusion pathways in LiTi2(PO4)3 (LATP) is key for optimizing its use.
Purpose of the Study:
- To synthesize Al-substituted LiTi2(PO4)3 (LATP) powders.
- To characterize the crystal structure and investigate lithium diffusion pathways.
- To evaluate the energy landscape of lithium diffusion in LATP.
Main Methods:
- Water-based sol-gel synthesis, calcination, and sintering.
- High-resolution synchrotron X-ray and neutron powder diffraction.
- Difference bond-valence approach and maximum entropy method for 3D structure reconstruction.
Main Results:
- Successfully prepared Al-substituted LATP powders.
- Determined crystal structure at various temperatures.
- Experimentally extracted 3D lithium diffusion pathways.
- Evaluated the energy landscape for lithium diffusion.
Conclusions:
- The study provides the first experimental 3D lithium diffusion pathway in LATP.
- This research offers insights into the energy landscape governing lithium diffusion.
- Findings contribute to the development of advanced solid electrolytes for energy storage.
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