Electrochemical impedance spectroscopy of a Li–S battery: Part 1. Influence of the electrode and electrolyte compositions on the impedance of symmetric cells
| Autor: | Petr Novák, Lorenz Gubler, Claire Villevieille, Joanna Conder, Renaud Bouchet, Sigita Trabesinger |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Battery (electricity)
Open-circuit voltage 020209 energy General Chemical Engineering Inorganic chemistry chemistry.chemical_element 02 engineering and technology Electrolyte 021001 nanoscience & nanotechnology Electrochemistry Anode Dielectric spectroscopy chemistry Electrode 0202 electrical engineering electronic engineering information engineering Lithium 0210 nano-technology |
| Zdroj: | Electrochimica Acta. 244:61-68 |
| ISSN: | 0013-4686 |
| DOI: | 10.1016/j.electacta.2017.05.041 |
| Popis: | Symmetric cells comprising either a pair of positive (sulfur), blocking or negative (lithium) electrodes were investigated by means of electrochemical impedance spectroscopy, to break down the complexity of the lithium–sulfur chemistry and to understand how the individual cell components influence the transport properties of a full cell. We thoroughly analyzed the ageing of the negative electrode (lithium metal) interface under open circuit conditions as a function of the nature of species present in the electrolyte, including the influence of dissolved binder and/or long-chain polysulfides. In a similar manner, we investigated the positive electrode interface. Herein, the objective was to understand the impact of an individual electrode component on the impedance response of the symmetric cell, and, more importantly, to discern the role of the sulfur in charge transfer reaction(s). |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect