In this work, a functionalized zwitterionic (ZI) compound 1-butylsulfonate-3-methylimidazole (CCimSO) was synthesized and tested as an additive to LiTFSI/CCimTFSI ionic liquid-based electrolytes for lithium-ion batteries. The structure and purity of CCimSO were confirmed by NMR and FTIR spectroscopy. The thermal stability of the pure CCimSO was examined by simultaneous thermogravimetric-mass spectrometric (TG-MS) measurements and differential scanning calorimetry (DSC). The LiTFSI/CCimTFSI/CCimSO system was tested as a potential electrolyte for lithium-ion batteries by using anatase TiO nanotube array electrode as the anode material. This electrolyte with 3% CCimSO showed significant improvement of lithium-ion intercalation/deintercalation properties, such as capacity retention and Coulombic efficiency compared to electrolyte without additive.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9966853 | PMC |
| http://dx.doi.org/10.3390/ijms24043495 | DOI Listing |
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