Electrochemical intercalation of Ca2+ ions into TiS2 in organic electrolytes at room temperature
Autor: | Yang-Soo Kim, Hee-Youb Song, Changhee Lee, Soon-Ki Jeong, Yun-Taek Jeong, Ri-Zhu Yin, Paul Maldonado Nogales |
---|---|
Rok vydání: | 2019 |
Předmět: |
Diffraction
Materials science Intercalation (chemistry) Inorganic chemistry Solvation 02 engineering and technology Electrolyte 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Ion lcsh:Chemistry chemistry.chemical_compound Hysteresis lcsh:Industrial electrochemistry lcsh:QD1-999 chemistry Propylene carbonate Electrochemistry Dimethyl carbonate 0210 nano-technology lcsh:TP250-261 |
Zdroj: | Electrochemistry Communications, Vol 98, Iss, Pp 115-118 (2019) |
ISSN: | 1388-2481 |
DOI: | 10.1016/j.elecom.2018.12.003 |
Popis: | This work investigates the electrochemical intercalation of Ca2+ ions into TiS2 in organic electrolytes at room temperature and demonstrates that successful intercalation/de-intercalation can be achieved using a 0.1 M solution of Ca(CF3SO3)2 in propylene carbonate (PC) as an electrolyte. Additionally, further performance (charge/discharge capacity, reversibility, and hysteresis) enhancement is observed when a 0.1 M solution of Ca(CF3SO3)2 in a 1:10 (mol/mol) mixture of PC and dimethyl carbonate (DMC) is employed, which is ascribed to the modulation of the solvation environment of Ca2+ ions by the use of the relatively low-polar DMC. Finally, the structural changes in TiS2 caused by Ca2+ intercalation/de-intercalation during charge/discharge are probed by in situ X-ray diffraction analysis. Keywords: Calcium-ion batteries, TiS2 electrode, Organic electrolyte, In situ X-ray diffraction analysis |
Databáze: | OpenAIRE |
Externí odkaz: |
načítá se...