Electrochemical Properties of Li₄Ti₅O₁₂ as a Negative Electrode for Calcium Secondary Batteries in Ca(TFSI)₂/THF Electrolyte

Abstract:

We investigated the electrochemical behavior and properties of lithium titanate oxide as the negative electrode for calcium ion batteries during charge/discharge tests in tetrahydrofuran (THF)-based electrolyte. The reversible charge and discharge capacities of ~150 and ~145 mAh g^–1 were observed, respectively, in THF-based electrolyte. They are larger than those obtained in propylene carbonate-based electrolyte. Moreover, interesting charge/discharge curves were observed, which might be attributed to structural changes during the insertion/extraction of calcium ions. These results were confirmed by the charge/discharge curves and scanning electron microscopy images.

• Periodical: Key Engineering Materials (Volume 724)
• Pages: 97-101
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.724.97
• Online since: December 2016
• Authors: Chang Hee Lee, Chang Su Kim, Soon Ki Jeong*
• Keywords: Calcium Ion Battery, Electrolyte, Li₄Ti₅O₁₂, Negative Electrode, Tetrahydrofuran

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