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Updated: Jun 6, 2025
10:03
Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques
Published on: November 11, 2013
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Borates vs. aluminates: comparing the anion for lithium-ion batteries
Darren M C Ould1,2, Megan E Penrod1,2, Jessica B McConnell1,2
1Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK.
Chemical Communications (Cambridge, England)
|December 2, 2024
Summary
New lithium salts with hexafluoroisopropoxy ligands were synthesized for lithium-ion batteries. Lithium aluminate salts showed better cycling performance and lower overpotentials in copper-lithium cells.
Area of Science:
- Electrochemistry
- Materials Science
Background:
- Lithium-ion batteries require stable electrolytes for efficient energy storage.
- Hexafluoroisopropoxy ligands offer potential for novel electrolyte development.
Purpose of the Study:
- To synthesize and investigate novel lithium borate and aluminate salts with hexafluoroisopropoxy ligands.
- To evaluate their performance in lithium-ion battery applications and copper-lithium (Cu‖Li) cells.
Main Methods:
- Synthesis of lithium borate and aluminate salts incorporating the hexafluoroisopropoxy ligand.
- Electrochemical testing in lithium-ion battery configurations and Cu‖Li cells.
Main Results:
- Lithium aluminate salts exhibited poorer air tolerance compared to borate counterparts.
- The specific salt Li[Al(hfip)4] demonstrated superior battery cycling performance.
- Lower overpotentials for lithium plating and stripping were observed in Cu‖Li cells using Li[Al(hfip)4].
Conclusions:
- Lithium aluminate salts with hexafluoroisopropoxy ligands are promising for battery applications.
- Li[Al(hfip)4] offers enhanced cycling stability and efficiency in electrochemical cells.
- Further research into air-stable variants could improve their widespread applicability.
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