About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Advanced Materials for Energy Conversion and Storage 2023
|
Presentation Title |
D-12: Spectroscopic Investigation of Long Cycling Al-ion Batteries Enabled by Ionic Liquid Electrolytes with Organic Additives |
Author(s) |
Zhen Wei, Maya Smith, Yiwen Wang, Mieko Smith, Ruigang Wang |
On-Site Speaker (Planned) |
Ruigang Wang |
Abstract Scope |
Aluminum-ion battery is a very promising rechargeable battery system due to its natural abundance, high theoretical energy density and three-electron redox reactions of aluminum species. In this research, we prepared a series of ionic liquid electrolytes by mixing 1-ethyl-3-methylimidazolium chloride (EMIC) with anhydrous aluminum chloride (AlCl3) at different molar ratios (AlCl3‒[EMIm]CI molar ratio = 1:1 to 1:2) for Al-ion batteries. The speciation of chloroaluminate anions AlCl4− and Al2Cl7− in the as-prepared ionic liquid electrolyte samples was quantified by Raman spectroscopy which can fingerprint the species present and relative concentration of each species. In addition, organic solvent (Dichloromethane, DCM) was used as additive materials to reduce the viscosity and enhance the conductivity of ionic liquids. The battery with DCM additive shows lower overpotential, higher discharge capacity and excellent rate capability, which was due to its low viscosity and high conductivity. |
Proceedings Inclusion? |
Planned: |
Keywords |
Energy Conversion and Storage, Nanotechnology, Powder Materials |