Cited 2 time in
Cited 1 time in
Thermoelectrochemical cells based on Li+/Li redox couples in LiFSI glyme electrolytes
- Thermoelectrochemical cells based on Li+/Li redox couples in LiFSI glyme electrolytes
- Kim, Kyunggu; Lee, Hochun
- DGIST Authors
- Lee, Hochun
- Issue Date
- PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 20(36), 23433-23440
- Article Type
- THERMO-ELECTROCHEMICAL CELL; LITHIUM-ION BATTERIES; THERMOGALVANIC CELLS; APROTIC-SOLVENTS; NANOTUBE; POWER; ASSOCIATION; ELECTRODES; SOLVATION; STABILITY
- Thermoelectrochemical cells (TECs) provide conspicuous advantages, including a high Seebeck coefficient (S-e), design flexibility, and low cost compared with conventional thermoelectric devices. Here, we investigated TECs employing Li metal electrodes (Li-TECs) and a series of glyme (CH3O[CH2CH2O]nCH(3), n = 1-4, nG) solvents with 0.5-3.0 M lithium-imide salts (lithium bis [fluorosulfonyl] imide, LiFSI, and lithium bis[trifluoromethane sulfonyl] imide, LiTFSI). The S-e value and power performance of Li-TECs markedly depend on the nature of glyme solvents and Li salt concentration. The dependency of S-e on the solvation structure of the Li-ions is examined via Raman measurements, and the internal resistance of Li-TECs is analyzed using electrochemical impedance spectroscopy. Notably, a Li-TEC with 1.0 M LiFSI 1G displays about two times higher power density and about eight times higher conversion efficiency than a conventional Cu-TEC utilizing aqueous electrolytes, which is ascribed to the high S-e value and low thermal conductivity of the former. In addition, for a Li-TEC with 1.0 M LiFSI 1G, the low-temperature performance is examined to assess its practical feasibility.
- ROYAL SOC CHEMISTRY
- Related Researcher
Electrochemistry Laboratory for Sustainable Energy(ELSE)
Lithium-ion batteries; Novel Materials for rechargeable batteries; Novel energy conversion;storage systems; Electrochemistry; 리튬이차전지; 이차전지용 신규 전극 및 전해액; 신규 에너지변환 및 저장 시스템; 전기화학
There are no files associated with this item.
- Department of Energy Science and EngineeringElectrochemistry Laboratory for Sustainable Energy(ELSE)1. Journal Articles
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.