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Lyotropic Liquid-Crystalline Mesophase of Lithium Triflate–Nonionic Surfactant as Gel Electrolyte for Graphene Optical Modulator
| Content Provider | Semantic Scholar |
|---|---|
| Author | Balci, Fadime Mert Balci, Sinan Kocabas, Coskun Dag, Ömer |
| Copyright Year | 2017 |
| Abstract | Lithium salt (noncoordinating anions, such as lithium triflate (Ltf)) gel electrolytes may be key for the practical use of electrochemical devices. We introduce a new lyotropic liquid-crystalline (LLC) mesophase using Ltf, a small amount of water (as low as 1.3 water per Ltf), and nonionic surfactant (C18H37(OCH2CH2)10OH, C18E10). The LLC phase forms over a broad range of Ltf/C18E10 mole ratios, 2–18. The clear ethanol solution of the ingredients can be either directly spin-coated over a glass substrate to form a gel phase or it can be prepared as a gel by mixing Ltf, water, and C18E10. The mesophase leaches out surfactant molecules at low salt concentrations, but at a salt/surfactant mole ratio of above 8, the phase is homogeneous with a cubic mesostructure, fully transparent in the visible optical region, mechanically flexible, and an effective gel electrolyte. We have observed a large electrostatic doping on graphene with the Fermi energy level of ∼1.0 eV using Ltf-C18E10 gel electrolytes. The Ltf-base... |
| Starting Page | 11194 |
| Ending Page | 11200 |
| Page Count | 7 |
| File Format | PDF HTM / HTML |
| DOI | 10.1021/acs.jpcc.7b03622 |
| Alternate Webpage(s) | http://yoksis.bilkent.edu.tr/pdf/files/12922.pdf |
| Alternate Webpage(s) | https://doi.org/10.1021/acs.jpcc.7b03622 |
| Volume Number | 121 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
