Niobium-doped titanium oxide anode and ionic liquid electrolyte for a safe sodium-ion battery
| Autor: | Hiroyuki Usui, Masahiro Shimizu, Akinobu Imoto, Hiroki Sakaguchi, Yasuhiro Domi, Kazuki Yamaguchi |
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| Rok vydání: | 2016 |
| Předmět: |
Battery (electricity)
Materials science Inorganic chemistry Energy Engineering and Power Technology 02 engineering and technology Electrolyte Anode material Conductivity 010402 general chemistry 01 natural sciences Ion chemistry.chemical_compound Electrical and Electronic Engineering Physical and Theoretical Chemistry Renewable Energy Sustainability and the Environment Rutile-type titanium oxide technology industry and agriculture Sodium-ion battery onic liquid electrolyte 021001 nanoscience & nanotechnology 0104 chemical sciences Anode Non-flammability chemistry Ionic liquid Melting point 0210 nano-technology Na-ion battery |
| Zdroj: | This research was published by Elsevier inc.: H. Usui, et al. Niobium-doped titanium oxide anode and ionic liquid electrolyte for a safe sodium-ion battery. Journal of power sources. 2016, 329, 428-431 ResearcherID |
| ISSN: | 0378-7753 |
| DOI: | 10.1016/j.jpowsour.2016.08.049 |
| Popis: | The anode properties of Nb-doped rutile TiO 2 electrodes were investigated in an ionic liquid electrolyte comprised of N -methyl- N -propylpyrrolidinium cation and bis(fluorosulfonyl)amide anion for use in a safe Na-ion battery. Although the electrolyte's conductivity was lower than that of a conventional organic electrolyte at 30 °C, it showed high conductivity comparable to that of the organic electrolyte at 60 °C. The Nb-doped TiO 2 electrode showed excellent cyclability in the ionic liquid electrolyte at 60 °C: a high capacity retention of 97% was observed even at the 350th cycle, which is comparable to value in the organic electrolyte (91%). In a non-flammability test in a closed system, no ignition was observed with the ionic liquid electrolyte even at 300 °C. These results indicate that combination of a Nb-doped TiO 2 anode and ionic liquid electrolyte gives not only an excellent cyclability but also high safety for a Na-ion battery operating at a temperature below the sodium's melting point of 98 °C. |
| Databáze: | OpenAIRE |
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