Transport Properties of Polysulfide Species in Lithium–Sulfur Battery Electrolytes: Coupling of Experiment and Theory
| Autor: | Chun Yuen Kwok, Linda F. Nazar, Momo Safari |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Coupling
General Chemical Engineering Thermodynamics Lithium–sulfur battery 02 engineering and technology General Chemistry Electrolyte 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Isothermal process 0104 chemical sciences lcsh:Chemistry chemistry.chemical_compound chemistry lcsh:QD1-999 Dioxolane Organic chemistry Diffusion (business) 0210 nano-technology Practical implications Polysulfide Research Article |
| Zdroj: | ACS Central Science, Vol 2, Iss 8, Pp 560-568 (2016) ACS Central Science |
| ISSN: | 2374-7951 2374-7943 |
| Popis: | A comprehensive experimental and theoretical analysis of the isothermal transport of species for the two model ternary-electrolytes with LiTFSI-Li2S4/dioxolane (DOL)-dimethoxyethane (DME) and LiTFSI-Li2S6/DOL-DME formulations is presented. An unambiguous picture of the polysulfide’s mobility is set forth after a detailed investigation of the macroscopic transference number and diffusion coefficients. The new findings of incongruent diffusion for Li2S4 species and high significance of cross-term diffusion coefficients reformulate a fledgling view of the prevalent redox-shuttle phenomena. The practical implications of this complex mechanism are discussed in detail. A comprehensive experimental and theoretical analysis of transport of Li2S4 and Li2S6 polysulfides reveals incongruent diffusion for Li2S4 and significance of cross-term diffusion coefficients relevant to redox-shuttle in Li−S batteries. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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