Investigations on the properties of Li3xLa2/3-xTiO3 based all-solid-state supercapacitor: Relationships between the capacitance, ionic conductivity, and temperature
| Autor: | Dong-Liang Lu, Tao Tao, Yingbang Yao, Jiuming Ma, Mei-Lin Huang, Jiwei Zhai, Sheng-Guo Lu, Bo Liang, Rui-Rui Zhao, Jia-Lin Wu |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Supercapacitor Materials science chemistry.chemical_element Ionic bonding 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Capacitance Energy storage chemistry Chemical engineering Vacancy defect visual_art 0103 physical sciences Materials Chemistry Ceramics and Composites visual_art.visual_art_medium Ionic conductivity Lithium Ceramic 0210 nano-technology |
| Zdroj: | Journal of the European Ceramic Society. 40:2396-2403 |
| ISSN: | 0955-2219 |
| DOI: | 10.1016/j.jeurceramsoc.2020.02.006 |
| Popis: | All-solid-state ionic supercapacitors based ceramic oxides exhibit better characteristics than the conventional liquid-electrolyte supercapacitors in terms of high safety and broad working potential. However, there are rare reports referring to the working mechanism as well as factors impacting the capacities of these solid- state supercapacitors. In this work, Li3xLa2/3-x□1/3-2xTiO3 (LLTO, □ represents vacancy) materials with different lithium contents (nominal 3x = 0.33∼0.42) are synthesized and fabricated into solid-state supercapacitors, to study the capacity. Results exhibit that the Li0.33La0.56TiO3 can release the highest capacitance of 0.28 m F⋅ g−1 among the samples with superior cycling performance under a potential range of 2 V at 300 K, based on an Au∣LLTO∣Au cell configuration. The possible factors to affect the capacity include the lattice structures, ionic conductivity, and working temperature. This study may provide new insights into the design of more stable energy storage devices with better safety. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect